{ "data": { "a": { "slug": "seedance-on-byteplus-modelark", "name": "Seedance on BytePlus ModelArk", "vendor": "BytePlus", "vendorUrl": "https://www.byteplus.com", "kind": "model", "category": "video-generation", "summary": "Seedance is ByteDance's family of video generation models, sold through the BytePlus ModelArk API. An agent creates an asynchronous task from text, images, video or audio and collects an MP4 by polling or callback.", "url": "https://www.anchorterminal.com/tools/seedance-on-byteplus-modelark", "markdownUrl": "https://www.anchorterminal.com/tools/seedance-on-byteplus-modelark.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/seedance-on-byteplus-modelark.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/seedance-on-byteplus-modelark.json", "dns": "seedance-on-byteplus-modelark.grade.anchorterminal.com", "repo": "https://github.com/volcengine/ark-runtime-go", "license": "Proprietary service under the BytePlus Customer Agreement and Service Specific Terms. The Go SDK is Apache-2.0", "transports": [ "http" ], "remoteUrl": "https://ark.ap-southeast.bytepluses.com/api/v3", "packages": [ { "registry": "pypi", "name": "arkruntime" }, { "registry": "go", "name": "github.com/volcengine/ark-runtime-go" }, { "registry": "maven", "name": "com.volcengine:ark-runtime" } ], "auth": "api-key", "authNotes": "Bearer API key created in the ModelArk console after a person registers a BytePlus account. The video task endpoints accept only API key authentication. A key belongs to one resource project, can be limited to named model IDs or custom endpoints and to an IP allowlist, and can be disabled or deleted. An account holds up to 50 keys. Seedance 2.5 and 2.0 must also be activated in the console.", "pricing": "usage", "pricingNotes": "Pay as you go per million tokens, with tokens estimated as (input video seconds plus output seconds) times width, height and frame rate, divided by 1,024. Seedance 2.5 is USD 10.70 per million tokens at 480p and 720p and 11.70 at 1080p without video input. Only successful generations are charged. No free quota is listed for video models, and Seedance 2.5 and 2.0 need a USD 30 balance, savings plan or resource pack before activation, none of which can be withdrawn or cancelled (https://docs.byteplus.com/en/docs/ModelArk/model-pricing).", "priceSummary": "Pay per use", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the ModelArk pricing page, the video task API reference or the error code list (checked 2026-10-09).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-09" }, "docsUrl": "https://docs.byteplus.com/en/docs/ModelArk/create-video-generation-task-api", "llmsTxt": "https://www.byteplus.com/llms.txt", "capabilities": [ "video.generate", "video.image-to-video", "video.edit", "video.audio" ], "tags": [ "official", "hosted", "closed-source", "model", "usage-priced", "prepaid", "async-jobs", "webhooks", "python", "go", "java", "iso27001", "soc2", "watermark", "no-status-page" ], "lastRelease": "2026-11-03", "graded": true, "anchor": { "graded": true, "score": 59.4, "grade": "C", "agentReady": false, "rank": 706, "ranked": true, "rankOf": 1510, "categoryRank": 7, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 85, "maintenance": 65, "payments": 20, "reliability": 40, "schema": 61, "security": 79, "transparency": 65 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-04" }, "negative": 0, "verdict": "The video task API documents limits, error codes and per-model parameters in detail, with callbacks, a filterable task list and API keys restrictable by model and IP address. No status page, OpenAPI file or free video quota was found, the newest models need a USD 30 balance, and BytePlus model services are not sold in the United States.", "bestFor": "Agents that need long clips (up to 30 seconds), many reference assets, video editing and extension, or 4K, bought direct from the model's maker with callbacks and restricted keys.", "strengths": [ "Rate limits are published per model. Seedance 2.5 allows 600 task creations a minute and 10 concurrent tasks for enterprise accounts, 180 and 3 for individuals", "`callback_url` posts each status change, and the task list filters by status, task ID, model and service tier with up to 500 results a page", "API keys can be limited to named model IDs or endpoints and to an IP allowlist, and can be disabled or deleted", "The service terms say BytePlus will not use customer data to train models unless the customer opts in", "Only successfully generated videos are charged, and a written deprecation policy promises at least 30 calendar days' notice" ], "weaknesses": [ "No status page was found on byteplus.com, the docs or the trust centre, and no SLA was found that names ModelArk inference", "No OpenAPI file was found. The reference pages are drawn by script and docs.byteplus.com has no llms.txt", "No free quota is listed for video models, and Seedance 2.5 and 2.0 need a USD 30 balance, savings plan or resource pack before activation", "The service terms say BytePlus model services are not available in the United States, and resale of the video API needs written authorisation", "`seedance-1-5-pro-251215`, released in December 2025, shuts down on 11 November 2026 with no automatic migration", "The Customer Agreement bars use for competitive purposes. No clause on automated access or benchmarking was found, which matters before any probe is run" ], "agentNotes": [ "POST to `/api/v3/contents/generations/tasks` on ark.ap-southeast.bytepluses.com, then poll GET `/contents/generations/tasks/{id}` or pass `callback_url`. Callbacks need an answer within 5 seconds", "Download the result at once. Video URLs last 24 hours, task records 7 days, and a Seedance 2.5 URL allows 100 downloads", "Pass `resolution`, `ratio` and `duration` in the request body. Parameters appended to the prompt as `--rs` or `--dur` are weakly validated and may be ignored", "On Seedance 2.5 set `omni_reference_task_type` to `edit` or `extend` so constraint errors arrive at submission. With `auto` they arrive after the task leaves the queue", "Do not send reference images or video with real human faces to Seedance 2.5 or 2.0. Only a queued task can be cancelled with DELETE" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 59.4 } ], "editorialScores": { "ergonomics": 85, "maintenance": 65, "payments": 20, "reliability": 40, "schema": 61, "security": 79, "transparency": 67 }, "provenanceScore": 62, "checked": { "categories": { "ergonomics": "2026-11-04", "maintenance": "2026-11-04", "payments": "2026-11-04", "reliability": "2026-11-04", "schema": "2026-11-04", "security": "2026-11-04", "transparency": "2026-11-04" }, "last": "2026-11-04", "lastMoved": "2026-11-04", "oldest": "2026-11-04", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "python -m pip install --upgrade arkruntime", "http": "curl -X POST https://ark.ap-southeast.bytepluses.com/api/v3/contents/generations/tasks \\\n -H \"Content-Type: application/json\" \\\n -H \"Authorization: Bearer $ARK_API_KEY\" \\\n -d '{\"model\":\"dreamina-seedance-2-5-260628\",\"content\":[{\"type\":\"text\",\"text\":\"The kitten is yawning at the camera.\"}],\"resolution\":\"720p\",\"ratio\":\"16:9\",\"duration\":5}'" }, "letme": { "capability": "https://letme.dev/video.generate", "tool": "https://letme.dev/seedance-on-byteplus-modelark" }, "sameCompany": [ "seedream-on-byteplus-modelark" ], "area": "content", "unitPrices": [ { "item": "Dreamina Seedance 2.5 480p", "unit": "video-second", "usd": 0.103, "note": "BytePlus example, 5 second clip, no video input" }, { "item": "Dreamina Seedance 2.5 720p", "unit": "video-second", "usd": 0.231, "note": "BytePlus example, 5 second clip, no video input" }, { "item": "Dreamina Seedance 2.5 1080p", "unit": "video-second", "usd": 0.569, "note": "BytePlus example, 5 second clip, no video input" }, { "item": "Dreamina Seedance 2.0 720p", "unit": "video-second", "usd": 0.15, "note": "BytePlus example. USD 0.07 at 480p, 0.37 at 1080p" }, { "item": "Dreamina Seedance 2.0 4K", "unit": "video-second", "usd": 0.78, "note": "BytePlus example, 5 second clip, no video input" }, { "item": "Dreamina Seedance 2.0 fast 720p", "unit": "video-second", "usd": 0.12, "note": "BytePlus example. USD 0.06 at 480p" }, { "item": "Dreamina Seedance 2.0 mini 720p", "unit": "video-second", "usd": 0.08, "note": "BytePlus example. USD 0.04 at 480p" }, { "item": "Seedance 1.0 pro 1080p", "unit": "video-second", "usd": 0.122, "note": "from the USD 0.61 example for 5 seconds, no audio" }, { "item": "Seedance 1.0 pro fast 1080p", "unit": "video-second", "usd": 0.048, "note": "from the USD 0.24 example for 5 seconds, no audio" } ], "provenance": { "legalEntity": "BytePlus Pte. Ltd.", "domain": "byteplus.com", "domainRegistered": "2002-09-07", "endpointOnVendorDomain": false, "terms": "https://docs.byteplus.com/en/docs/legal/docs-customer-agreement", "privacy": "https://docs.byteplus.com/en/docs/legal/docs-privacy-policy", "statusPage": "", "changelog": "https://docs.byteplus.com/en/docs/ModelArk/product-update-announcements", "securityTxt": "none", "checked": "2026-10-09", "notes": [ "The Customer Agreement (effective 30 September 2026) is made with BytePlus Pte. Ltd. or another BytePlus affiliate named as contracting entity. The website Terms of Service (last updated 23 August 2022) give 1 Raffles Quay, #26-10, South Tower, Singapore 048583. BytePlus is part of ByteDance.", "The Customer Agreement ranks the Service Specific Terms above itself. Their ModelArk and Model Services sections, with the Specific Terms for the BytePlus Video Generation Model Service, apply to this product. They cite General Terms for AI Services, a page that returned no document to our reader.", "The privacy policy says processing done on behalf of corporate customers is outside its scope. That processing falls under the Data Processing Addendum, which the Customer Agreement incorporates and which we did not open.", "The API answers at ark.ap-southeast.bytepluses.com, a second domain registered on 1 November 2022 with the same registrar. The BytePlus docs name that host.", "www.byteplus.com/.well-known/security.txt returns the site's HTML page, so there is no security.txt. The Go SDK repository's SECURITY.md sends reports to the ByteDance security centre.", "No status page is linked from the site footer, the docs, the trust centre or llms.txt. The `status` link in the site's API catalogue file points at robots.txt.", "RDAP for byteplus.com gives a registration date of 2002-09-07, long before BytePlus existed, so the date says little about the vendor's age.", "docs.byteplus.com and api.byteplus.com answer /robots.txt with an application page, so neither publishes one. www.byteplus.com/robots.txt allows public pages and carries `Content-Signal: ai-train=no, search=yes, ai-input=yes`." ], "score": 62 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/seedance-on-byteplus-modelark.json", "live": { "slug": "seedance-on-byteplus-modelark", "probe": { "target": "https://ark.ap-southeast.bytepluses.com/api/v3", "method": "get", "lastAt": "2026-11-08T00:56:03.467380512Z", "lastOk": true, "lastStatus": 401, "lastMs": 588, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 554, "p95ms24h": 664, "samples24h": 244, "samples30d": 7271, "days": [ { "date": "2026-10-09", "probes": 85, "ok": 85 }, { "date": "2026-10-10", "probes": 247, "ok": 247 }, { "date": "2026-10-11", "probes": 247, "ok": 247 }, { "date": "2026-10-12", "probes": 247, "ok": 247 }, { "date": "2026-10-13", "probes": 248, "ok": 248 }, { "date": "2026-10-14", "probes": 249, "ok": 249 }, { "date": "2026-10-15", "probes": 253, "ok": 253 }, { "date": "2026-10-16", "probes": 252, "ok": 252 }, { "date": "2026-10-17", "probes": 253, "ok": 253 }, { "date": "2026-10-18", "probes": 256, "ok": 256 }, { "date": "2026-10-19", "probes": 255, "ok": 255 }, { "date": "2026-10-20", "probes": 252, "ok": 252 }, { "date": "2026-10-21", "probes": 253, "ok": 253 }, { "date": "2026-10-22", "probes": 253, "ok": 253 }, { "date": "2026-10-23", "probes": 248, "ok": 248 }, { "date": "2026-10-24", "probes": 251, "ok": 251 }, { "date": "2026-10-25", "probes": 250, "ok": 250 }, { "date": "2026-10-26", "probes": 252, "ok": 252 }, { "date": "2026-10-27", "probes": 249, "ok": 249 }, { "date": "2026-10-28", "probes": 250, "ok": 250 }, { "date": "2026-10-29", "probes": 249, "ok": 249 }, { "date": "2026-10-30", "probes": 249, "ok": 249 }, { "date": "2026-10-31", "probes": 251, "ok": 251 }, { "date": "2026-11-01", "probes": 249, "ok": 249 }, { "date": "2026-11-02", "probes": 250, "ok": 250 }, { "date": "2026-11-03", "probes": 248, "ok": 248 }, { "date": "2026-11-04", "probes": 246, "ok": 246 }, { "date": "2026-11-05", "probes": 185, "ok": 185 }, { "date": "2026-11-06", "probes": 241, "ok": 241 }, { "date": "2026-11-07", "probes": 243, "ok": 243 }, { "date": "2026-11-08", "probes": 10, "ok": 10 } ] }, "versions": [ { "registry": "pypi", "name": "arkruntime", "version": "0.19.0", "released": "2026-11-03", "seenAt": "2026-11-07T00:04:13.038739755Z" } ], "githubStars": 2, "pypiWeekly": 1816, "securityTxt": { "url": "https://byteplus.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-07T16:01:04.256062282Z" }, "llmsTxt": { "url": "https://www.byteplus.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:33:53.415728335Z" }, "domain": { "domain": "byteplus.com", "registered": "2002-09-07", "source": "https://rdap.verisign.com/com/v1/domain/byteplus.com", "checkedAt": "2026-11-01T14:16:46.456345552Z" }, "pages": [ { "url": "https://docs.byteplus.com/en/docs/ModelArk/product-update-announcements", "kind": "changelog", "status": 200, "checkedAt": "2026-11-07T14:05:28.215792989Z", "changedAt": "2026-11-06T13:27:56.960952489Z", "fingerprint": "415f5fb1364e" }, { "url": "https://docs.byteplus.com/en/docs/ModelArk/model-deprecation-notice", "kind": "deprecations", "status": 200, "checkedAt": "2026-11-07T14:05:23.506003957Z", "changedAt": "2026-11-06T13:27:52.256171835Z", "fingerprint": "707350fd5c7e" }, { "url": "https://docs.byteplus.com/en/docs/ModelArk/model-pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-11-07T14:05:26.187805055Z", "changedAt": "2026-11-06T13:27:54.943332262Z", "fingerprint": "6d18719eb82b" }, { "url": "https://docs.byteplus.com/en/docs/legal/docs-privacy-policy", "kind": "privacy", "status": 200, "checkedAt": "2026-11-07T14:05:32.005105535Z", "changedAt": "2026-11-03T07:46:44.858716824Z", "fingerprint": "301ffadc55f7" }, { "url": "https://docs.byteplus.com/en/docs/legal/docs-customer-agreement", "kind": "terms", "status": 200, "checkedAt": "2026-11-07T14:05:29.975749225Z", "changedAt": "2026-11-03T07:46:43.762561682Z", "fingerprint": "df09e210bebc" } ], "github": { "repo": "volcengine/ark-runtime-go", "checkedAt": "2026-11-02T09:36:55.899346653Z", "stars": 2, "archived": false, "issuesEnabled": true, "pushedAt": "2026-10-15T08:45:45Z", "openIssues": 1, "openPRs": 1, "issuesOpened90d": 1, "issuesClosed90d": 0, "prsMerged90d": 38, "replies": { "sampled": 1, "unanswered": 1 } }, "updatedAt": "2026-11-08T00:56:03.467380512Z" } }, "answer": "Seedance on BytePlus ModelArk scores 59.4 (C) on agent readiness against sync. labs MCP server's 51.5 (D), and leads in 3 of 7 scored categories. sync. labs MCP server leads on schema \u0026 documentation, payments \u0026 pricing and maintenance \u0026 community.", "b": { "slug": "sync-labs-mcp", "name": "sync. labs MCP server", "vendor": "Synchronicity Labs (sync.)", "vendorUrl": "https://sync.so", "kind": "mcp", "category": "video-generation", "summary": "sync. labs' open-source MCP server lets an agent lip-sync video to new audio or a script, dub it into other languages with matching lips, and manage generations, hosted with OAuth for web clients or run locally with an API key.", "url": "https://www.anchorterminal.com/tools/sync-labs-mcp", "markdownUrl": "https://www.anchorterminal.com/tools/sync-labs-mcp.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/sync-labs-mcp.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/sync-labs-mcp.json", "dns": "sync-labs-mcp.grade.anchorterminal.com", "repo": "https://github.com/synchronicity-labs/mcp-server", "license": "MIT", "transports": [ "streamable-http" ], "remoteUrl": "https://mcp.sync.so/mcp", "packages": [], "auth": "mixed", "authNotes": "OAuth for Claude Web and ChatGPT, tied to the active sync. organisation. Local and editor setups run @sync.so/mcp-server with a SYNC_API_KEY.", "pricing": "paid", "pricingNotes": "Plans from $5 a month (hobbyist) to $49 and up, plus usage per second of video (for example $5 a month plus $0.05 a second); dubbing audio $0.10 a second, text-to-speech $0.004 a second. A free try for videos up to a minute (checked 2026-11-07).", "priceSummary": "Paid", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 on the MCP docs or pricing page (checked 2026-11-07).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-11-07" }, "docsUrl": "https://sync.so/docs/plugins-and-extensions/mcp-server", "llmsTxt": "https://sync.so/llms.txt", "registryName": "io.github.synchronicity-labs/mcp-server", "capabilities": [ "video.edit", "video.audio", "translation.dubbing" ], "tags": [ "official", "hosted", "mcp", "remote-mcp", "oauth", "api-key", "paid", "status-page", "open-source", "llms-txt", "mcp-registry" ], "graded": true, "anchor": { "graded": true, "score": 51.5, "grade": "D", "agentReady": false, "rank": 1026, "ranked": true, "rankOf": 1510, "categoryRank": 10, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 55, "maintenance": 75, "payments": 30, "reliability": 43, "schema": 81, "security": 38, "transparency": 44 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-07" }, "negative": 0, "verdict": "sync. labs' MCP server is open source, generated from its API spec with workflow tools on top, and released often, with clear per-second prices for lip sync and dubbing. Security and data handling are thinly documented, and there's no read-only mode.", "bestFor": "Agents that lip-sync or dub video into other languages.", "strengths": [ "Open source under MIT, with tests and CI", "Tools generated from the public API spec, so they track the API", "Per-second prices published", "OAuth for web clients, API key locally", "Frequent tagged releases" ], "weaknesses": [ "No read-only mode", "Data handling and security programme not documented in the pages read", "Only a short free try" ], "agentNotes": [ "Get an estimate before long generations", "Dub or lip-sync only voices and faces the user has the right to use", "Check the active organisation before connecting with OAuth" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 51.5 } ], "editorialScores": { "ergonomics": 55, "maintenance": 75, "payments": 30, "reliability": 43, "schema": 81, "security": 38, "transparency": 40 }, "provenanceScore": 48, "checked": { "categories": { "ergonomics": "2026-11-07", "maintenance": "2026-11-07", "payments": "2026-11-07", "reliability": "2026-11-07", "schema": "2026-11-07", "security": "2026-11-07", "transparency": "2026-11-07" }, "last": "2026-11-07", "oldest": "2026-11-07", "stale": false, "staleAfterDays": 90 } }, "connect": { "claudeCode": "claude mcp add sync-labs --transport http https://mcp.sync.so/mcp", "config": { "mcpServers": { "sync-labs": { "url": "https://mcp.sync.so/mcp" } } } }, "letme": { "capability": "https://letme.dev/video.edit", "tool": "https://letme.dev/sync-labs-mcp" }, "area": "content", "unitPrices": [ { "item": "Lip sync video (hobbyist)", "unit": "video-second", "usd": 0.05, "note": "Plus $5 a month plan" }, { "item": "Dubbing audio", "unit": "video-second", "usd": 0.1 } ], "provenance": { "legalEntity": "Synchronicity Labs", "domain": "sync.so", "domainRegistered": "", "domainNote": "Not looked up: RDAP isn't requested under the 1 November 2026 rules.", "endpointOnVendorDomain": true, "terms": "", "privacy": "", "statusPage": "https://status.sync.so", "changelog": "", "securityTxt": "none", "checked": "2026-11-07", "notes": [ "The repository is MIT. Terms and privacy weren't read." ], "score": 48 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/sync-labs-mcp.json", "live": { "slug": "sync-labs-mcp", "probe": { "target": "https://mcp.sync.so/mcp", "method": "mcp-initialize", "lastAt": "2026-11-08T00:56:07.887985939Z", "lastOk": true, "lastStatus": 401, "lastMs": 321, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 362, "p95ms24h": 437, "samples24h": 63, "samples30d": 63, "days": [ { "date": "2026-11-07", "probes": 53, "ok": 53 }, { "date": "2026-11-08", "probes": 10, "ok": 10 } ] }, "vendorStatus": { "page": "https://status.sync.so", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-11-08T00:32:26.812315776Z" }, "updatedAt": "2026-11-08T00:56:07.887985939Z" } }, "edges": [ { "by": 41, "category": "security", "leads": "seedance-on-byteplus-modelark", "name": "Security \u0026 auth", "reasons": { "a": "Per the 9 October check for the docs pages, not re-read on 4 November. Model reading of the checklist (credential, training, retention, operator visibility, programme). API keys belong to a resource project, can be limited to named model IDs or endpoints and to an IP allowlist, and can be disabled or deleted. No expiry or rotation setting was found (28). The service terms say BytePlus will not use customer data to train models unless the customer opts in, and the data processing page and training FAQ agree (20). Task records last 7 days and video URLs 24 hours, DELETE removes a finished task record, and content that triggers the filter is kept 180 days. No general retention period for inputs was found (10). Keys show a last-used time and billing per key, and the console has usage statistics. The inference security audit page says it applies only to Skylark models (8). The trust centre lists ISO 27001, SOC 2 and other certifications for BytePlus as a whole, and the Go SDK repository's SECURITY.md points to the ByteDance security centre and a bounty policy. No security.txt, and no disclosure policy on byteplus.com itself. The Go SDK's SECURITY.md was re-read in a clone on 4 November, and OSV holds no advisory for the Go, Python or Java packages (13).", "b": "OAuth per organisation, or an API key in the environment (22 of 30). No read-only mode (3 of 20). Media in and out, no third-party text (10). No audit log found (0). No security programme found (3 of 20). 22 + 3 + 10 + 0 + 3 = 38." }, "scores": { "a": 79, "b": 38 } }, { "by": 30, "category": "ergonomics", "leads": "seedance-on-byteplus-modelark", "name": "Agent ergonomics", "reasons": { "a": "Per the 9 October check, not re-read on 4 November (docs.byteplus.com answered robots.txt with its app page). Create returns only a task ID, the task object is small, and `callback_url` posts each status change so an agent need not poll (25). The list call pages with `page_num` and `page_size` up to 500 and filters by status, task ID, model and service tier, and `resolution`, `ratio` and `duration` size the output (20). Error codes come with a meaning and a suggested fix. On Seedance 2.5 some constraint errors arrive only after the task leaves the queue unless `omni_reference_task_type` is set (17). No idempotency key was found. Only successful videos are charged, a queued task can be cancelled with DELETE and a running one cannot (8). Only `model` and `content` are required, and official SDKs exist for Python, Go and Java (15).", "b": "A generated catalogue filtered by client profile, curated for ChatGPT (15). Project history and estimates (12 of 20). Recovery tools; errors not documented (8 of 20). Annotations not read (5 of 20). OAuth or a key, npm package and library use (15). 15 + 12 + 8 + 5 + 15 = 55." }, "scores": { "a": 85, "b": 55 } }, { "by": 21, "category": "transparency", "leads": "seedance-on-byteplus-modelark", "name": "Transparency \u0026 trust", "reasons": { "a": "Per the 9 October check, not re-read on 4 November (docs.byteplus.com answered robots.txt with its app page). Closed models under the Customer Agreement (effective 30 September 2026) and the Service Specific Terms, which are public and dated. The Go SDK is Apache-2.0. Two cited documents, the General Terms for AI Services and the ModelArk Terms, returned no text to our reader (15). The service terms, the ModelArk data processing page and the training FAQ agree that customer data is not used for training without opt-in. Filter-triggered content is kept 180 days, and no general retention period for inputs is stated. A Data Processing Addendum is incorporated, which we did not open (20). A deprecation policy with a 30 day minimum and dated timetables for each batch (18). Processing locations are named as Malaysia, Indonesia and the EU/EEA, and a sub-processor list effective 24 September 2026 promises 15 days' notice of changes, but it has no ModelArk row (14).", "b": "MIT open source (30). Data handling not read (5 of 30). No deprecation policy; earlier tool names documented as superseded (5 of 20). Subprocessors not found (0). 30 + 5 + 5 + 0 = 40." }, "scores": { "a": 65, "b": 44 } }, { "by": 20, "category": "schema", "leads": "sync-labs-mcp", "name": "Schema \u0026 documentation", "reasons": { "a": "Per the 9 October check, not re-read on 4 November (docs.byteplus.com answered robots.txt with its app page). No OpenAPI or similar file was found. The reference pages link an API Explorer that is drawn by script, which we could not read (0). www.byteplus.com/llms.txt is a short site index, and docs.byteplus.com has no llms.txt or published Markdown twin (3). The create-task reference states which models accept each field, which input modes cannot be mixed, and when to use `frames` over `duration` or set `omni_reference_task_type` (17). Fields carry types, ranges, defaults and per-model values. `content` is a mixed array of text, image, video, audio and draft items, and a legacy mode reads parameters from the prompt text (13). cURL, Python and Java examples in the tutorial, and an error page of about 120 rows with HTTP status, code, message and meaning (15). A versioned `/api/v3` path, dated model IDs, and pages for product updates, model releases, deprecations and an API schema notice. Product updates are dated by month only and stop at August 2026 (13).", "b": "Tools generated from the public API specification plus workflow tools, with typed schemas in the source (25). llms.txt and .md pages (10). Tool table with descriptions (14 of 20). Typed from the API spec (12 of 15). Examples and an estimates tool; errors not documented (8 of 15). Tags v0.2.2 to v0.2.4 and dated commits (12 of 15). 25 + 10 + 14 + 12 + 8 + 12 = 81." }, "scores": { "a": 61, "b": 81 } }, { "by": 10, "category": "payments", "leads": "sync-labs-mcp", "name": "Payments \u0026 pricing", "reasons": { "a": "Per the 9 October check, not re-read on 4 November (docs.byteplus.com answered robots.txt with its app page). No x402, MPP or L402 found (0). Per-token prices for every Seedance model and worked per-second examples are published without a login (20). No free quota is listed for video models, and Seedance 2.5 and 2.0 need a USD 30 balance, savings plan or resource pack before activation (0). A person registers, adds funds, activates the model and creates the key in the console (0).", "b": "No machine payment protocol (0). Per-second prices published (20). A free try for short videos (10 of 20). A person signs up (0). 0 + 20 + 10 + 0 = 30." }, "scores": { "a": 20, "b": 30 } }, { "by": 10, "category": "maintenance", "leads": "sync-labs-mcp", "name": "Maintenance \u0026 community", "reasons": { "a": "Model reading. The last dated change that touches Seedance is the 8 September 2026 deprecation notice for `seedance-1-5-pro-251215`, 57 days before this check; Dreamina Seedance 2.5 shows \"Updated Aug 7, 2026\" in the ai.byteplus.com model catalogue on 4 November, with no newer Seedance model. The Go SDK tagged v0.10.0 to v0.19.0 between 29 September and 3 November, but none of them changes its content-generation package, last changed on 26 August, so they don't set recency for this listing (as groq-speech-to-text's SDK releases that don't touch audio). The create-task reference's 8 October page date records no change. 20, in place of 30 (cause time and correction). The deprecation policy promises at least 30 calendar days' notice. `seedance-1-5-pro-251215` got 64 days, from 8 September to 11 November 2026, after about 11 months on sale and with no automatic migration, and a Seedance 1.0 lite model went in the May 2026 batch. The minimum is short (12 of 20). Monthly product updates, model release and deprecation pages, with support by console ticket and a Discord server we did not test, per the 9 October check (11 of 15). Current official SDKs for Python, Go and Java (15). The Go SDK is Apache-2.0 with a CI workflow and 19 tags since its 11 August import, the latest v0.19.0 on 3 November 2026. It is below 1.0 and replaced an older SDK that the docs still need for some APIs (7). 20+12+11+15+7 = 65.", "b": "v0.2.4 and commits on 7 November 2026 (30). Three tags in recent weeks (20). Issues not read (0). Official registry entry io.github.synchronicity-labs/mcp-server (15). CI with verify, publish and review workflows (10). 30 + 20 + 0 + 15 + 10 = 75. Registry presence read from Anchor Terminal's own daily import of the official MCP registry (/api/v1/registry.json, 6 November 2026), not the registry's API." }, "scores": { "a": 65, "b": 75 } } ], "facts": [ { "a": "Model API", "b": "MCP server", "name": "Kind" }, { "a": "BytePlus", "b": "Synchronicity Labs (sync.)", "name": "Vendor" }, { "a": "https://ark.ap-southeast.bytepluses.com/api/v3", "b": "https://mcp.sync.so/mcp", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "Streamable HTTP", "name": "Transports" }, { "a": "API key", "b": "OAuth or key", "name": "Auth" }, { "a": "Pay per use", "b": "Paid", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary service under the BytePlus Customer Agreement and Service Specific Terms. The Go SDK is Apache-2.0", "b": "MIT", "name": "Licence" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "not listed", "b": "io.github.synchronicity-labs/mcp-server", "name": "MCP registry" }, { "a": "2026-11-03", "b": "none", "name": "Last release" }, { "a": "couldn't be read", "b": "no document linked", "name": "Terms last updated" }, { "a": "couldn't be read", "b": "no document linked", "name": "Privacy policy last updated" }, { "a": "couldn't be read", "b": "not read yet", "name": "Customer content may train models" }, { "a": "couldn't be read", "b": "not read yet", "name": "Terms restrict automated access" }, { "a": "couldn't be read", "b": "not read yet", "name": "Terms restrict benchmarking" }, { "a": "couldn't be read", "b": "not read yet", "name": "Terms or service can change without notice" }, { "a": "couldn't be read", "b": "not read yet", "name": "Arbitration or class-action waiver" } ], "faq": [ { "answer": "Seedance on BytePlus ModelArk scores 59.4 (C) on agent readiness against sync. labs MCP server's 51.5 (D), and leads in 3 of 7 scored categories. sync. labs MCP server leads on schema \u0026 documentation, payments \u0026 pricing and maintenance \u0026 community.", "question": "Which is better for AI agents, Seedance on BytePlus ModelArk or sync. labs MCP server?" }, { "answer": "Seedance on BytePlus ModelArk needs an API key. sync. labs MCP server takes an API key or an OAuth sign-in.", "question": "Do Seedance on BytePlus ModelArk and sync. labs MCP server need an API key?" }, { "answer": "Yes. Seedance on BytePlus ModelArk has a hosted endpoint at https://ark.ap-southeast.bytepluses.com/api/v3 and sync. labs MCP server at https://mcp.sync.so/mcp.", "question": "Can an agent call Seedance on BytePlus ModelArk and sync. labs MCP server without installing anything?" }, { "answer": "No open-source release is listed for Seedance on BytePlus ModelArk. sync. labs MCP server is open source (MIT).", "question": "Are Seedance on BytePlus ModelArk and sync. labs MCP server open source?" } ], "goodFor": [ { "aheadOn": [ "Agent ergonomics, 85 against 55", "Security \u0026 auth, 79 against 38", "Transparency \u0026 trust, 65 against 44" ], "also": null, "goodFor": "Agents that need long clips (up to 30 seconds), many reference assets, video editing and extension, or 4K, bought direct from the model's maker with callbacks and restricted keys.", "slug": "seedance-on-byteplus-modelark", "watchFor": "No status page was found on byteplus.com, the docs or the trust centre, and no SLA was found that names ModelArk inference" }, { "aheadOn": [ "Schema \u0026 documentation, 81 against 61", "Payments \u0026 pricing, 30 against 20", "Maintenance \u0026 community, 75 against 65" ], "also": [ "Open source" ], "goodFor": "Agents that lip-sync or dub video into other languages.", "slug": "sync-labs-mcp", "watchFor": "No read-only mode" } ], "history": { "seedance-on-byteplus-modelark": [ { "causes": [ "correction", "time" ], "date": "2026-11-04", "delta": -0.1, "from": 59.5, "fromGrade": "C", "to": 59.4, "toGrade": "C" }, { "causes": [ "evidence" ], "date": "2026-10-28", "delta": 0.1, "from": 59.4, "fromGrade": "C", "to": 59.5, "toGrade": "C" }, { "causes": [ "method" ], "date": "2026-10-27", "delta": 0.1, "from": 59.3, "fromGrade": "C", "to": 59.4, "toGrade": "C" } ], "sync-labs-mcp": null }, "job": { "capability": "video.edit", "name": "Video edit" }, "others": [ { "json": "https://www.anchorterminal.com/compare/alibaba-wan-vs-seedance-on-byteplus-modelark.json", "title": "Alibaba Wan (Model Studio) vs Seedance on BytePlus ModelArk", "url": "https://www.anchorterminal.com/compare/alibaba-wan-vs-seedance-on-byteplus-modelark" }, { "json": "https://www.anchorterminal.com/compare/fal-video-vs-seedance-on-byteplus-modelark.json", "title": "fal video models vs Seedance on BytePlus ModelArk", "url": "https://www.anchorterminal.com/compare/fal-video-vs-seedance-on-byteplus-modelark" }, { "json": "https://www.anchorterminal.com/compare/framefields-vs-seedance-on-byteplus-modelark.json", "title": "framefields vs Seedance on BytePlus ModelArk", "url": "https://www.anchorterminal.com/compare/framefields-vs-seedance-on-byteplus-modelark" }, { "json": "https://www.anchorterminal.com/compare/google-veo-vs-seedance-on-byteplus-modelark.json", "title": "Google Veo vs Seedance on BytePlus ModelArk", "url": "https://www.anchorterminal.com/compare/google-veo-vs-seedance-on-byteplus-modelark" }, { "json": "https://www.anchorterminal.com/compare/higgsfield-vs-seedance-on-byteplus-modelark.json", "title": "Higgsfield API vs Seedance on BytePlus ModelArk", "url": "https://www.anchorterminal.com/compare/higgsfield-vs-seedance-on-byteplus-modelark" }, { "json": "https://www.anchorterminal.com/compare/hyperframes-vs-seedance-on-byteplus-modelark.json", "title": "HyperFrames vs Seedance on BytePlus ModelArk", "url": "https://www.anchorterminal.com/compare/hyperframes-vs-seedance-on-byteplus-modelark" }, { "json": "https://www.anchorterminal.com/compare/kling-vs-seedance-on-byteplus-modelark.json", "title": "Kling AI API vs Seedance on BytePlus ModelArk", "url": "https://www.anchorterminal.com/compare/kling-vs-seedance-on-byteplus-modelark" }, { "json": "https://www.anchorterminal.com/compare/luma-vs-seedance-on-byteplus-modelark.json", "title": "Luma AI API vs Seedance on BytePlus ModelArk", "url": "https://www.anchorterminal.com/compare/luma-vs-seedance-on-byteplus-modelark" }, { "json": "https://www.anchorterminal.com/compare/magic-hour-mcp-vs-seedance-on-byteplus-modelark.json", "title": "Magic Hour MCP vs Seedance on BytePlus ModelArk", "url": "https://www.anchorterminal.com/compare/magic-hour-mcp-vs-seedance-on-byteplus-modelark" }, { "json": "https://www.anchorterminal.com/compare/minimax-video-vs-seedance-on-byteplus-modelark.json", "title": "MiniMax Video API vs Seedance on BytePlus ModelArk", "url": "https://www.anchorterminal.com/compare/minimax-video-vs-seedance-on-byteplus-modelark" }, { "json": "https://www.anchorterminal.com/compare/openai-sora-vs-seedance-on-byteplus-modelark.json", "title": "OpenAI Sora API vs Seedance on BytePlus ModelArk", "url": "https://www.anchorterminal.com/compare/openai-sora-vs-seedance-on-byteplus-modelark" }, { "json": "https://www.anchorterminal.com/compare/pika-vs-seedance-on-byteplus-modelark.json", "title": "Pika API vs Seedance on BytePlus ModelArk", "url": "https://www.anchorterminal.com/compare/pika-vs-seedance-on-byteplus-modelark" }, { "json": "https://www.anchorterminal.com/compare/pixverse-vs-seedance-on-byteplus-modelark.json", "title": "PixVerse API vs Seedance on BytePlus ModelArk", "url": "https://www.anchorterminal.com/compare/pixverse-vs-seedance-on-byteplus-modelark" }, { "json": "https://www.anchorterminal.com/compare/popcraft-mcp-vs-seedance-on-byteplus-modelark.json", "title": "Popcraft MCP vs Seedance on BytePlus ModelArk", "url": "https://www.anchorterminal.com/compare/popcraft-mcp-vs-seedance-on-byteplus-modelark" }, { "json": "https://www.anchorterminal.com/compare/replicate-video-vs-seedance-on-byteplus-modelark.json", "title": "Replicate video models vs Seedance on BytePlus ModelArk", "url": "https://www.anchorterminal.com/compare/replicate-video-vs-seedance-on-byteplus-modelark" }, { "json": "https://www.anchorterminal.com/compare/runway-vs-seedance-on-byteplus-modelark.json", "title": "Runway API vs Seedance on BytePlus ModelArk", "url": "https://www.anchorterminal.com/compare/runway-vs-seedance-on-byteplus-modelark" }, { "json": "https://www.anchorterminal.com/compare/seedance-on-byteplus-modelark-vs-vidu.json", "title": "Seedance on BytePlus ModelArk vs Vidu API", "url": "https://www.anchorterminal.com/compare/seedance-on-byteplus-modelark-vs-vidu" }, { "json": "https://www.anchorterminal.com/compare/alibaba-wan-vs-sync-labs-mcp.json", "title": "Alibaba Wan (Model Studio) vs sync. labs MCP server", "url": "https://www.anchorterminal.com/compare/alibaba-wan-vs-sync-labs-mcp" }, { "json": "https://www.anchorterminal.com/compare/clueso-video-vs-seedance-on-byteplus-modelark.json", "title": "Clueso vs Seedance on BytePlus ModelArk", "url": "https://www.anchorterminal.com/compare/clueso-video-vs-seedance-on-byteplus-modelark" }, { "json": "https://www.anchorterminal.com/compare/clueso-video-vs-sync-labs-mcp.json", "title": "Clueso vs sync. labs MCP server", "url": "https://www.anchorterminal.com/compare/clueso-video-vs-sync-labs-mcp" }, { "json": "https://www.anchorterminal.com/compare/fal-video-vs-sync-labs-mcp.json", "title": "fal video models vs sync. labs MCP server", "url": "https://www.anchorterminal.com/compare/fal-video-vs-sync-labs-mcp" }, { "json": "https://www.anchorterminal.com/compare/framefields-vs-sync-labs-mcp.json", "title": "framefields vs sync. labs MCP server", "url": "https://www.anchorterminal.com/compare/framefields-vs-sync-labs-mcp" }, { "json": "https://www.anchorterminal.com/compare/higgsfield-vs-sync-labs-mcp.json", "title": "Higgsfield API vs sync. labs MCP server", "url": "https://www.anchorterminal.com/compare/higgsfield-vs-sync-labs-mcp" }, { "json": "https://www.anchorterminal.com/compare/kling-vs-sync-labs-mcp.json", "title": "Kling AI API vs sync. labs MCP server", "url": "https://www.anchorterminal.com/compare/kling-vs-sync-labs-mcp" }, { "json": "https://www.anchorterminal.com/compare/luma-vs-sync-labs-mcp.json", "title": "Luma AI API vs sync. labs MCP server", "url": "https://www.anchorterminal.com/compare/luma-vs-sync-labs-mcp" }, { "json": "https://www.anchorterminal.com/compare/magic-hour-mcp-vs-sync-labs-mcp.json", "title": "Magic Hour MCP vs sync. labs MCP server", "url": "https://www.anchorterminal.com/compare/magic-hour-mcp-vs-sync-labs-mcp" }, { "json": "https://www.anchorterminal.com/compare/minimax-video-vs-sync-labs-mcp.json", "title": "MiniMax Video API vs sync. labs MCP server", "url": "https://www.anchorterminal.com/compare/minimax-video-vs-sync-labs-mcp" }, { "json": "https://www.anchorterminal.com/compare/pika-vs-sync-labs-mcp.json", "title": "Pika API vs sync. labs MCP server", "url": "https://www.anchorterminal.com/compare/pika-vs-sync-labs-mcp" }, { "json": "https://www.anchorterminal.com/compare/pixverse-vs-sync-labs-mcp.json", "title": "PixVerse API vs sync. labs MCP server", "url": "https://www.anchorterminal.com/compare/pixverse-vs-sync-labs-mcp" }, { "json": "https://www.anchorterminal.com/compare/replicate-video-vs-sync-labs-mcp.json", "title": "Replicate video models vs sync. labs MCP server", "url": "https://www.anchorterminal.com/compare/replicate-video-vs-sync-labs-mcp" }, { "json": "https://www.anchorterminal.com/compare/runway-vs-sync-labs-mcp.json", "title": "Runway API vs sync. labs MCP server", "url": "https://www.anchorterminal.com/compare/runway-vs-sync-labs-mcp" }, { "json": "https://www.anchorterminal.com/compare/google-veo-vs-sync-labs-mcp.json", "title": "Google Veo vs sync. labs MCP server", "url": "https://www.anchorterminal.com/compare/google-veo-vs-sync-labs-mcp" }, { "json": "https://www.anchorterminal.com/compare/openai-sora-vs-sync-labs-mcp.json", "title": "OpenAI Sora API vs sync. labs MCP server", "url": "https://www.anchorterminal.com/compare/openai-sora-vs-sync-labs-mcp" }, { "json": "https://www.anchorterminal.com/compare/sync-labs-mcp-vs-vidu.json", "title": "sync. labs MCP server vs Vidu API", "url": "https://www.anchorterminal.com/compare/sync-labs-mcp-vs-vidu" } ], "panel": null, "scores": [ { "by": 3, "edge": "sync-labs-mcp", "key": "reliability", "name": "Reliability", "seedance-on-byteplus-modelark": 40, "sync-labs-mcp": 43, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 20, "edge": "sync-labs-mcp", "key": "schema", "name": "Schema \u0026 documentation", "seedance-on-byteplus-modelark": 61, "sync-labs-mcp": 81, "weight": 13 }, { "by": 30, "edge": "seedance-on-byteplus-modelark", "key": "ergonomics", "name": "Agent ergonomics", "seedance-on-byteplus-modelark": 85, "sync-labs-mcp": 55, "weight": 13 }, { "by": 41, "edge": "seedance-on-byteplus-modelark", "key": "security", "name": "Security \u0026 auth", "seedance-on-byteplus-modelark": 79, "sync-labs-mcp": 38, "weight": 14 }, { "by": 10, "edge": "sync-labs-mcp", "key": "payments", "name": "Payments \u0026 pricing", "seedance-on-byteplus-modelark": 20, "sync-labs-mcp": 30, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 10, "edge": "sync-labs-mcp", "key": "maintenance", "name": "Maintenance \u0026 community", "seedance-on-byteplus-modelark": 65, "sync-labs-mcp": 75, "weight": 7 }, { "by": 21, "edge": "seedance-on-byteplus-modelark", "key": "transparency", "name": "Transparency \u0026 trust", "seedance-on-byteplus-modelark": 65, "sync-labs-mcp": 44, "weight": 7 } ], "summary": "Seedance on BytePlus ModelArk scores 59.4 (C) on agent readiness against sync. labs MCP server's 51.5 (D), and leads in 3 of 7 scored categories. sync. labs MCP server leads on schema \u0026 documentation, payments \u0026 pricing and maintenance \u0026 community. Both do video edit.", "tasks": null, "tutorials": [], "verdicts": { "seedance-on-byteplus-modelark": "The video task API documents limits, error codes and per-model parameters in detail, with callbacks, a filterable task list and API keys restrictable by model and IP address. No status page, OpenAPI file or free video quota was found, the newest models need a USD 30 balance, and BytePlus model services are not sold in the United States.", "sync-labs-mcp": "sync. labs' MCP server is open source, generated from its API spec with workflow tools on top, and released often, with clear per-second prices for lip sync and dubbing. Security and data handling are thinly documented, and there's no read-only mode." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/seedance-on-byteplus-modelark-vs-sync-labs-mcp", "json": "https://www.anchorterminal.com/compare/seedance-on-byteplus-modelark-vs-sync-labs-mcp.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/seedance-on-byteplus-modelark-vs-sync-labs-mcp.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/seedance-on-byteplus-modelark-vs-sync-labs-mcp.min.md" }, "markdown": "Seedance on BytePlus ModelArk scores 59.4 (C) on agent readiness against sync. labs MCP server's 51.5 (D), and leads in 3 of 7 scored categories. sync. labs MCP server leads on schema \u0026 documentation, payments \u0026 pricing and maintenance \u0026 community. Both do video edit.\n\n- Seedance on BytePlus ModelArk: grade C, 59.4/100, rank #706 of 1510. Markdown https://www.anchorterminal.com/tools/seedance-on-byteplus-modelark.md · JSON https://www.anchorterminal.com/api/v1/tools/seedance-on-byteplus-modelark.json\n- sync. labs MCP server: grade D, 51.5/100, rank #1026 of 1510. Markdown https://www.anchorterminal.com/tools/sync-labs-mcp.md · JSON https://www.anchorterminal.com/api/v1/tools/sync-labs-mcp.json\n- Best video generation for AI agents: https://www.anchorterminal.com/best/video-generation/index.md\n- All 183 video comparisons: https://www.anchorterminal.com/compare/video-generation/index.md\n\n## Which one, for what\n\n### Seedance on BytePlus ModelArk (C)\n\nGood for: Agents that need long clips (up to 30 seconds), many reference assets, video editing and extension, or 4K, bought direct from the model's maker with callbacks and restricted keys.\n\nAhead on:\n- Agent ergonomics, 85 against 55\n- Security \u0026 auth, 79 against 38\n- Transparency \u0026 trust, 65 against 44\n\nWatch for: No status page was found on byteplus.com, the docs or the trust centre, and no SLA was found that names ModelArk inference\n\n### sync. labs MCP server (D)\n\nGood for: Agents that lip-sync or dub video into other languages.\n\nAhead on:\n- Schema \u0026 documentation, 81 against 61\n- Payments \u0026 pricing, 30 against 20\n- Maintenance \u0026 community, 75 against 65\n\nAlso in its favour:\n- Open source\n\nWatch for: No read-only mode\n\n\n## Why the edge\n\n### Security \u0026 auth: Seedance on BytePlus ModelArk +41\n\n- Seedance on BytePlus ModelArk (79): Per the 9 October check for the docs pages, not re-read on 4 November. Model reading of the checklist (credential, training, retention, operator visibility, programme). API keys belong to a resource project, can be limited to named model IDs or endpoints and to an IP allowlist, and can be disabled or deleted. No expiry or rotation setting was found (28). The service terms say BytePlus will not use customer data to train models unless the customer opts in, and the data processing page and training FAQ agree (20). Task records last 7 days and video URLs 24 hours, DELETE removes a finished task record, and content that triggers the filter is kept 180 days. No general retention period for inputs was found (10). Keys show a last-used time and billing per key, and the console has usage statistics. The inference security audit page says it applies only to Skylark models (8). The trust centre lists ISO 27001, SOC 2 and other certifications for BytePlus as a whole, and the Go SDK repository's SECURITY.md points to the ByteDance security centre and a bounty policy. No security.txt, and no disclosure policy on byteplus.com itself. The Go SDK's SECURITY.md was re-read in a clone on 4 November, and OSV holds no advisory for the Go, Python or Java packages (13).\n- sync. labs MCP server (38): OAuth per organisation, or an API key in the environment (22 of 30). No read-only mode (3 of 20). Media in and out, no third-party text (10). No audit log found (0). No security programme found (3 of 20). 22 + 3 + 10 + 0 + 3 = 38.\n\n### Agent ergonomics: Seedance on BytePlus ModelArk +30\n\n- Seedance on BytePlus ModelArk (85): Per the 9 October check, not re-read on 4 November (docs.byteplus.com answered robots.txt with its app page). Create returns only a task ID, the task object is small, and `callback_url` posts each status change so an agent need not poll (25). The list call pages with `page_num` and `page_size` up to 500 and filters by status, task ID, model and service tier, and `resolution`, `ratio` and `duration` size the output (20). Error codes come with a meaning and a suggested fix. On Seedance 2.5 some constraint errors arrive only after the task leaves the queue unless `omni_reference_task_type` is set (17). No idempotency key was found. Only successful videos are charged, a queued task can be cancelled with DELETE and a running one cannot (8). Only `model` and `content` are required, and official SDKs exist for Python, Go and Java (15).\n- sync. labs MCP server (55): A generated catalogue filtered by client profile, curated for ChatGPT (15). Project history and estimates (12 of 20). Recovery tools; errors not documented (8 of 20). Annotations not read (5 of 20). OAuth or a key, npm package and library use (15). 15 + 12 + 8 + 5 + 15 = 55.\n\n### Transparency \u0026 trust: Seedance on BytePlus ModelArk +21\n\n- Seedance on BytePlus ModelArk (65): Per the 9 October check, not re-read on 4 November (docs.byteplus.com answered robots.txt with its app page). Closed models under the Customer Agreement (effective 30 September 2026) and the Service Specific Terms, which are public and dated. The Go SDK is Apache-2.0. Two cited documents, the General Terms for AI Services and the ModelArk Terms, returned no text to our reader (15). The service terms, the ModelArk data processing page and the training FAQ agree that customer data is not used for training without opt-in. Filter-triggered content is kept 180 days, and no general retention period for inputs is stated. A Data Processing Addendum is incorporated, which we did not open (20). A deprecation policy with a 30 day minimum and dated timetables for each batch (18). Processing locations are named as Malaysia, Indonesia and the EU/EEA, and a sub-processor list effective 24 September 2026 promises 15 days' notice of changes, but it has no ModelArk row (14).\n- sync. labs MCP server (44): MIT open source (30). Data handling not read (5 of 30). No deprecation policy; earlier tool names documented as superseded (5 of 20). Subprocessors not found (0). 30 + 5 + 5 + 0 = 40.\n\n### Schema \u0026 documentation: sync. labs MCP server +20\n\n- Seedance on BytePlus ModelArk (61): Per the 9 October check, not re-read on 4 November (docs.byteplus.com answered robots.txt with its app page). No OpenAPI or similar file was found. The reference pages link an API Explorer that is drawn by script, which we could not read (0). www.byteplus.com/llms.txt is a short site index, and docs.byteplus.com has no llms.txt or published Markdown twin (3). The create-task reference states which models accept each field, which input modes cannot be mixed, and when to use `frames` over `duration` or set `omni_reference_task_type` (17). Fields carry types, ranges, defaults and per-model values. `content` is a mixed array of text, image, video, audio and draft items, and a legacy mode reads parameters from the prompt text (13). cURL, Python and Java examples in the tutorial, and an error page of about 120 rows with HTTP status, code, message and meaning (15). A versioned `/api/v3` path, dated model IDs, and pages for product updates, model releases, deprecations and an API schema notice. Product updates are dated by month only and stop at August 2026 (13).\n- sync. labs MCP server (81): Tools generated from the public API specification plus workflow tools, with typed schemas in the source (25). llms.txt and .md pages (10). Tool table with descriptions (14 of 20). Typed from the API spec (12 of 15). Examples and an estimates tool; errors not documented (8 of 15). Tags v0.2.2 to v0.2.4 and dated commits (12 of 15). 25 + 10 + 14 + 12 + 8 + 12 = 81.\n\n### Payments \u0026 pricing: sync. labs MCP server +10\n\n- Seedance on BytePlus ModelArk (20): Per the 9 October check, not re-read on 4 November (docs.byteplus.com answered robots.txt with its app page). No x402, MPP or L402 found (0). Per-token prices for every Seedance model and worked per-second examples are published without a login (20). No free quota is listed for video models, and Seedance 2.5 and 2.0 need a USD 30 balance, savings plan or resource pack before activation (0). A person registers, adds funds, activates the model and creates the key in the console (0).\n- sync. labs MCP server (30): No machine payment protocol (0). Per-second prices published (20). A free try for short videos (10 of 20). A person signs up (0). 0 + 20 + 10 + 0 = 30.\n\n### Maintenance \u0026 community: sync. labs MCP server +10\n\n- Seedance on BytePlus ModelArk (65): Model reading. The last dated change that touches Seedance is the 8 September 2026 deprecation notice for `seedance-1-5-pro-251215`, 57 days before this check; Dreamina Seedance 2.5 shows \"Updated Aug 7, 2026\" in the ai.byteplus.com model catalogue on 4 November, with no newer Seedance model. The Go SDK tagged v0.10.0 to v0.19.0 between 29 September and 3 November, but none of them changes its content-generation package, last changed on 26 August, so they don't set recency for this listing (as groq-speech-to-text's SDK releases that don't touch audio). The create-task reference's 8 October page date records no change. 20, in place of 30 (cause time and correction). The deprecation policy promises at least 30 calendar days' notice. `seedance-1-5-pro-251215` got 64 days, from 8 September to 11 November 2026, after about 11 months on sale and with no automatic migration, and a Seedance 1.0 lite model went in the May 2026 batch. The minimum is short (12 of 20). Monthly product updates, model release and deprecation pages, with support by console ticket and a Discord server we did not test, per the 9 October check (11 of 15). Current official SDKs for Python, Go and Java (15). The Go SDK is Apache-2.0 with a CI workflow and 19 tags since its 11 August import, the latest v0.19.0 on 3 November 2026. It is below 1.0 and replaced an older SDK that the docs still need for some APIs (7). 20+12+11+15+7 = 65.\n- sync. labs MCP server (75): v0.2.4 and commits on 7 November 2026 (30). Three tags in recent weeks (20). Issues not read (0). Official registry entry io.github.synchronicity-labs/mcp-server (15). CI with verify, publish and review workflows (10). 30 + 20 + 0 + 15 + 10 = 75. Registry presence read from Anchor Terminal's own daily import of the official MCP registry (/api/v1/registry.json, 6 November 2026), not the registry's API.\n\n## Score by category\n\n| Category | Weight | Seedance on BytePlus ModelArk | sync. labs MCP server | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 40 | 43 | sync. labs MCP server +3 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 61 | 81 | sync. labs MCP server +20 |\n| Agent ergonomics | 13% (16.2 this run) | 85 | 55 | Seedance on BytePlus ModelArk +30 |\n| Security \u0026 auth | 14% (17.5 this run) | 79 | 38 | Seedance on BytePlus ModelArk +41 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 20 | 30 | sync. labs MCP server +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 65 | 75 | sync. labs MCP server +10 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 65 | 44 | Seedance on BytePlus ModelArk +21 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **59.4 · C** | **51.5 · D** | |\n\n## Facts side by side\n\n| Fact | Seedance on BytePlus ModelArk | sync. labs MCP server |\n| --- | --- | --- |\n| Kind | Model API | MCP server |\n| Vendor | BytePlus | Synchronicity Labs (sync.) |\n| Hosted endpoint | `https://ark.ap-southeast.bytepluses.com/api/v3` | `https://mcp.sync.so/mcp` |\n| Transports | HTTP | Streamable HTTP |\n| Auth | API key | OAuth or key |\n| Pricing | Pay per use | Paid |\n| x402 | no | no |\n| Licence | Proprietary service under the BytePlus Customer Agreement and Service Specific Terms. The Go SDK is Apache-2.0 | MIT |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| MCP registry | not listed | `io.github.synchronicity-labs/mcp-server` |\n| Last release | 2026-11-03 | none |\n| Terms last updated | couldn't be read | no document linked |\n| Privacy policy last updated | couldn't be read | no document linked |\n| Customer content may train models | couldn't be read | not read yet |\n| Terms restrict automated access | couldn't be read | not read yet |\n| Terms restrict benchmarking | couldn't be read | not read yet |\n| Terms or service can change without notice | couldn't be read | not read yet |\n| Arbitration or class-action waiver | couldn't be read | not read yet |\n\n## How the scores have moved\n\n### Seedance on BytePlus ModelArk\n\n- -0.1 on 4 November 2026: correction, time\n- +0.1 on 28 October 2026: new evidence\n- +0.1 on 27 October 2026: checklist\n\n### sync. labs MCP server\n\nNo score change since it was listed.\n\n## Verdicts\n\n**Seedance on BytePlus ModelArk.** The video task API documents limits, error codes and per-model parameters in detail, with callbacks, a filterable task list and API keys restrictable by model and IP address. No status page, OpenAPI file or free video quota was found, the newest models need a USD 30 balance, and BytePlus model services are not sold in the United States.\n\n**sync. labs MCP server.** sync. labs' MCP server is open source, generated from its API spec with workflow tools on top, and released often, with clear per-second prices for lip sync and dubbing. Security and data handling are thinly documented, and there's no read-only mode.\n\n## Before you call either\n\n### Seedance on BytePlus ModelArk\n\n1. POST to `/api/v3/contents/generations/tasks` on ark.ap-southeast.bytepluses.com, then poll GET `/contents/generations/tasks/{id}` or pass `callback_url`. Callbacks need an answer within 5 seconds\n2. Download the result at once. Video URLs last 24 hours, task records 7 days, and a Seedance 2.5 URL allows 100 downloads\n3. Pass `resolution`, `ratio` and `duration` in the request body. Parameters appended to the prompt as `--rs` or `--dur` are weakly validated and may be ignored\n4. On Seedance 2.5 set `omni_reference_task_type` to `edit` or `extend` so constraint errors arrive at submission. With `auto` they arrive after the task leaves the queue\n5. Do not send reference images or video with real human faces to Seedance 2.5 or 2.0. Only a queued task can be cancelled with DELETE\n\n### sync. labs MCP server\n\n1. Get an estimate before long generations\n2. Dub or lip-sync only voices and faces the user has the right to use\n3. Check the active organisation before connecting with OAuth\n\n## Questions\n\n### Which is better for AI agents, Seedance on BytePlus ModelArk or sync. labs MCP server?\n\nSeedance on BytePlus ModelArk scores 59.4 (C) on agent readiness against sync. labs MCP server's 51.5 (D), and leads in 3 of 7 scored categories. sync. labs MCP server leads on schema \u0026 documentation, payments \u0026 pricing and maintenance \u0026 community.\n\n### Do Seedance on BytePlus ModelArk and sync. labs MCP server need an API key?\n\nSeedance on BytePlus ModelArk needs an API key. sync. labs MCP server takes an API key or an OAuth sign-in.\n\n### Can an agent call Seedance on BytePlus ModelArk and sync. labs MCP server without installing anything?\n\nYes. Seedance on BytePlus ModelArk has a hosted endpoint at https://ark.ap-southeast.bytepluses.com/api/v3 and sync. labs MCP server at https://mcp.sync.so/mcp.\n\n### Are Seedance on BytePlus ModelArk and sync. labs MCP server open source?\n\nNo open-source release is listed for Seedance on BytePlus ModelArk. sync. labs MCP server is open source (MIT).\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/seedance-on-byteplus-modelark-vs-sync-labs-mcp.json, and with the fewest tokens: https://www.anchorterminal.com/compare/seedance-on-byteplus-modelark-vs-sync-labs-mcp.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"seedance-on-byteplus-modelark\", \"b\": \"sync-labs-mcp\"}`. From a terminal: `anchor compare seedance-on-byteplus-modelark sync-labs-mcp`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/seedance-on-byteplus-modelark.json and https://www.anchorterminal.com/api/v1/tools/sync-labs-mcp.json\n\n## Other comparisons with Seedance on BytePlus ModelArk or sync. labs MCP server\n\n- [Alibaba Wan (Model Studio) vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/alibaba-wan-vs-seedance-on-byteplus-modelark.md)\n- [fal video models vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/fal-video-vs-seedance-on-byteplus-modelark.md)\n- [framefields vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/framefields-vs-seedance-on-byteplus-modelark.md)\n- [Google Veo vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/google-veo-vs-seedance-on-byteplus-modelark.md)\n- [Higgsfield API vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/higgsfield-vs-seedance-on-byteplus-modelark.md)\n- [HyperFrames vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/hyperframes-vs-seedance-on-byteplus-modelark.md)\n- [Kling AI API vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/kling-vs-seedance-on-byteplus-modelark.md)\n- [Luma AI API vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/luma-vs-seedance-on-byteplus-modelark.md)\n- [Magic Hour MCP vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/magic-hour-mcp-vs-seedance-on-byteplus-modelark.md)\n- [MiniMax Video API vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/minimax-video-vs-seedance-on-byteplus-modelark.md)\n- [OpenAI Sora API vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/openai-sora-vs-seedance-on-byteplus-modelark.md)\n- [Pika API vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/pika-vs-seedance-on-byteplus-modelark.md)\n- [PixVerse API vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/pixverse-vs-seedance-on-byteplus-modelark.md)\n- [Popcraft MCP vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/popcraft-mcp-vs-seedance-on-byteplus-modelark.md)\n- [Replicate video models vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/replicate-video-vs-seedance-on-byteplus-modelark.md)\n- [Runway API vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/runway-vs-seedance-on-byteplus-modelark.md)\n- [Seedance on BytePlus ModelArk vs Vidu API](https://www.anchorterminal.com/compare/seedance-on-byteplus-modelark-vs-vidu.md)\n- [Alibaba Wan (Model Studio) vs sync. labs MCP server](https://www.anchorterminal.com/compare/alibaba-wan-vs-sync-labs-mcp.md)\n- [Clueso vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/clueso-video-vs-seedance-on-byteplus-modelark.md)\n- [Clueso vs sync. labs MCP server](https://www.anchorterminal.com/compare/clueso-video-vs-sync-labs-mcp.md)\n- [fal video models vs sync. labs MCP server](https://www.anchorterminal.com/compare/fal-video-vs-sync-labs-mcp.md)\n- [framefields vs sync. labs MCP server](https://www.anchorterminal.com/compare/framefields-vs-sync-labs-mcp.md)\n- [Higgsfield API vs sync. labs MCP server](https://www.anchorterminal.com/compare/higgsfield-vs-sync-labs-mcp.md)\n- [Kling AI API vs sync. labs MCP server](https://www.anchorterminal.com/compare/kling-vs-sync-labs-mcp.md)\n- [Luma AI API vs sync. labs MCP server](https://www.anchorterminal.com/compare/luma-vs-sync-labs-mcp.md)\n- [Magic Hour MCP vs sync. labs MCP server](https://www.anchorterminal.com/compare/magic-hour-mcp-vs-sync-labs-mcp.md)\n- [MiniMax Video API vs sync. labs MCP server](https://www.anchorterminal.com/compare/minimax-video-vs-sync-labs-mcp.md)\n- [Pika API vs sync. labs MCP server](https://www.anchorterminal.com/compare/pika-vs-sync-labs-mcp.md)\n- [PixVerse API vs sync. labs MCP server](https://www.anchorterminal.com/compare/pixverse-vs-sync-labs-mcp.md)\n- [Replicate video models vs sync. labs MCP server](https://www.anchorterminal.com/compare/replicate-video-vs-sync-labs-mcp.md)\n- [Runway API vs sync. labs MCP server](https://www.anchorterminal.com/compare/runway-vs-sync-labs-mcp.md)\n- [Google Veo vs sync. labs MCP server](https://www.anchorterminal.com/compare/google-veo-vs-sync-labs-mcp.md)\n- [OpenAI Sora API vs sync. labs MCP server](https://www.anchorterminal.com/compare/openai-sora-vs-sync-labs-mcp.md)\n- [sync. labs MCP server vs Vidu API](https://www.anchorterminal.com/compare/sync-labs-mcp-vs-vidu.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "attributionRequired": true, "credit": "CC BY 4.0, credit Anchor Terminal and link the page or API address you took it from (https://www.anchorterminal.com/terms/#data)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-11-08", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.7", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run", "terms": "https://www.anchorterminal.com/terms/#data" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Seedance on BytePlus ModelArk vs sync. labs MCP server", "url": "" } ], "description": "Seedance on BytePlus ModelArk scores 59.4 (C) to sync. labs's 51.5 (D) for video edit. 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