{
  "data": {
    "a": {
      "slug": "seedream-on-byteplus-modelark",
      "name": "Seedream on BytePlus ModelArk",
      "vendor": "BytePlus Pte. Ltd. (ByteDance)",
      "vendorUrl": "https://www.byteplus.com",
      "kind": "model",
      "category": "image-generation",
      "summary": "BytePlus ModelArk's hosted API for ByteDance's Seedream image models. One endpoint handles text-to-image, reference-image editing, batches of related images and layer decomposition, billed per generated image.",
      "url": "https://www.anchorterminal.com/tools/seedream-on-byteplus-modelark",
      "markdownUrl": "https://www.anchorterminal.com/tools/seedream-on-byteplus-modelark.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/seedream-on-byteplus-modelark.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/seedream-on-byteplus-modelark.json",
      "repo": "https://github.com/volcengine/ark-runtime-go",
      "license": "Proprietary service under the BytePlus Customer Agreement and Service Specific Terms. The Go and Python SDK repositories are Apache-2.0",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://ark.ap-southeast.bytepluses.com/api/v3",
      "packages": [
        {
          "registry": "pypi",
          "name": "arkruntime"
        },
        {
          "registry": "pypi",
          "name": "byteplus-python-sdk-v2"
        },
        {
          "registry": "go",
          "name": "github.com/volcengine/ark-runtime-go"
        }
      ],
      "auth": "api-key",
      "authNotes": "The image endpoint takes a ModelArk API key as a Bearer token and, per its reference, no other credential. Keys are created in the console after a browser sign-up, belong to one resource project and one region, and can be limited to named model IDs or custom inference endpoints and to an IP allowlist. A key can be disabled, re-enabled or deleted, and a primary account holds up to 50. Each model must be activated in the console before use.",
      "pricing": "usage",
      "pricingNotes": "Pay as you go per successfully generated image, in US dollars, published without a login. Seedream 5.0 flash $0.018, 4.0 $0.03, 5.0 lite $0.035, 4.5 $0.04, 5.0 pro $0.045 up to 2.61 million pixels and $0.09 above. Input images are free except on 5.0 pro, which charges $0.003 from the second. No free image quota is listed for Seedream, and an account in arrears for two hours is suspended (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 API reference, the pricing page or the error codes (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/image-generation-api",
      "capabilities": [
        "image.generate",
        "image.edit",
        "image.reference"
      ],
      "tags": [
        "hosted",
        "closed-source",
        "api-key",
        "python",
        "go",
        "java",
        "openai-compatible",
        "watermark",
        "streaming",
        "regional-endpoints"
      ],
      "lastRelease": "2026-09-17",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 53.8,
        "grade": "D",
        "agentReady": false,
        "rank": 700,
        "ranked": true,
        "rankOf": 950,
        "categoryRank": 5,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 72,
          "maintenance": 73,
          "payments": 20,
          "reliability": 43,
          "schema": 62,
          "security": 70,
          "transparency": 60
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-09"
        },
        "negative": -3,
        "negativeNotes": [
          "The model list (updated 28 September 2026) says `seedream-5-0-lite` is supported in eu-west-1, while the deprecation page says the model was deactivated in that region on 10 September 2026 and the region page lists only `seed-2-0-lite` for the EU. The batch that carries the notice is dated 8 September 2026, two days earlier, against the page's own 30-day minimum. We made no call to confirm which page is right. 3 points (https://docs.byteplus.com/en/docs/modelark/model-deprecation-notice)."
        ],
        "verdict": "Per-image prices from $0.018 are public, and API keys can be limited to named models and an IP allowlist. No status page, SLA or OpenAPI file was found, onboarding needs a browser sign-up, and BytePlus says its model services are not available in the United States.",
        "bestFor": "Agents that need ByteDance's Seedream models first-hand, multi-reference edits, 4K output or layered PNG output at a published per-image price, for users outside the United States.",
        "strengths": [
          "Per-image prices are public for five Seedream models, from $0.018 (5.0 flash) to $0.09 (5.0 pro above 1.5K), and failed or moderated images are not billed",
          "API keys are scoped to a project and can be limited to named model IDs or endpoints and to an IP allowlist",
          "Up to 14 reference images on Seedream 5.0 lite, 4.5 and 4.0, and up to 4K output (4096x4096) on those models",
          "The error reference lists 15 distinct 429 codes, and a burst-traffic guide gives backoff code with jitter",
          "The service terms say customer data is not used for training unless the customer opts in",
          "A written deprecation process promises at least 30 calendar days' notice, with dated batches and named replacements"
        ],
        "weaknesses": [
          "No status page, incident history or ModelArk SLA was found in the pages read",
          "No OpenAPI file, llms.txt or Markdown docs for agents were found. The docs site is drawn by script",
          "The model list says `seedream-5-0-lite` runs in eu-west-1, while the deprecation page says it was deactivated there on 10 September 2026",
          "The Service Specific Terms say BytePlus Model Services are not available in the United States",
          "No idempotency key was found, so a retried request that succeeded is a second paid generation",
          "Image URLs expire 24 hours after generation, and a watermark is added unless `watermark` is set to false"
        ],
        "agentNotes": [
          "POST to `https://ark.ap-southeast.bytepluses.com/api/v3/images/generations` with `Authorization: Bearer $ARK_API_KEY`. Keys and model activation are per region",
          "Set `watermark` to false if the image must not carry the AI-generated mark. The default is true",
          "Download `data[].url` within 24 hours, or ask for `response_format` `b64_json`",
          "Check each `data[].error` in a sequential batch. One moderated image does not fail the others, and only `usage.generated_images` is billed",
          "Stay under 500 images a minute per model and back off with jitter on 429. Layer decomposition reserves 17 against that limit per request"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 0,
        "avgRating": 0,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "D",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 53.8
          }
        ],
        "editorialScores": {
          "ergonomics": 72,
          "maintenance": 73,
          "payments": 20,
          "reliability": 43,
          "schema": 62,
          "security": 70,
          "transparency": 61
        },
        "provenanceScore": 59
      },
      "connect": {
        "install": "python -m pip install --upgrade arkruntime",
        "http": "curl https://ark.ap-southeast.bytepluses.com/api/v3/images/generations \\\n  -H \"Content-Type: application/json\" \\\n  -H \"Authorization: Bearer $ARK_API_KEY\" \\\n  -d '{\"model\":\"seedream-5-0-lite-260128\",\"prompt\":\"A lighthouse at dusk\",\"size\":\"2K\",\"output_format\":\"png\",\"watermark\":false}'"
      },
      "letme": {
        "capability": "https://letme.dev/image.generate",
        "tool": "https://letme.dev/seedream-on-byteplus-modelark"
      },
      "sameCompany": [
        "seedance-on-byteplus-modelark"
      ],
      "area": "content",
      "unitPrices": [
        {
          "item": "Seedream 5.0 flash",
          "unit": "image",
          "usd": 0.018
        },
        {
          "item": "Seedream 4.0",
          "unit": "image",
          "usd": 0.03
        },
        {
          "item": "Seedream 5.0 lite",
          "unit": "image",
          "usd": 0.035
        },
        {
          "item": "Seedream 4.5",
          "unit": "image",
          "usd": 0.04
        },
        {
          "item": "Seedream 5.0 pro",
          "unit": "image",
          "usd": 0.045,
          "note": "up to 2.61 million pixels (1.5K or lower)"
        },
        {
          "item": "Seedream 5.0 pro above 1.5K",
          "unit": "image",
          "usd": 0.09,
          "note": "more than 2.61 million pixels"
        }
      ],
      "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/model-release-announcement",
        "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 the contracting entity. The Service Specific Terms, which hold the ModelArk and Model Services sections, rank above it.",
          "The API answers at ark.ap-southeast.bytepluses.com and ark.eu-west.bytepluses.com, a different domain from byteplus.com. BytePlus's own docs name both hosts.",
          "The Privacy Policy names Byteplus Pte. Ltd. in Singapore as controller and says it does not cover personal data processed on behalf of corporate customers. That processing falls under the Data Processing Addendum, which we did not read.",
          "https://www.byteplus.com/.well-known/security.txt returns the site's HTML shell, not a security.txt file. The SDK repositories carry a SECURITY.md that sends reports to ByteDance's security centre.",
          "No status page was found in the docs or on the pages of www.byteplus.com that we could read.",
          "RDAP for byteplus.com gives a registration date of 2002-09-07 and Gandi SAS as registrar."
        ],
        "score": 59
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/seedream-on-byteplus-modelark.json",
      "live": {
        "slug": "seedream-on-byteplus-modelark",
        "probe": {
          "target": "https://ark.ap-southeast.bytepluses.com/api/v3",
          "method": "get",
          "lastAt": "2026-10-10T03:53:42.879224265Z",
          "lastOk": true,
          "lastStatus": 401,
          "lastMs": 470,
          "lastNote": "asks for credentials",
          "authRequired": true,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 507,
          "p95ms24h": 595,
          "samples24h": 125,
          "samples30d": 125,
          "days": [
            {
              "date": "2026-10-09",
              "probes": 85,
              "ok": 85
            },
            {
              "date": "2026-10-10",
              "probes": 40,
              "ok": 40
            }
          ]
        },
        "versions": [
          {
            "registry": "pypi",
            "name": "arkruntime",
            "version": "0.8.0",
            "released": "2026-09-17",
            "seenAt": "2026-10-09T17:19:00.477962822Z"
          },
          {
            "registry": "pypi",
            "name": "byteplus-python-sdk-v2",
            "version": "3.0.61",
            "released": "2026-09-17",
            "seenAt": "2026-10-09T17:19:00.589058252Z"
          }
        ],
        "githubStars": 1,
        "pypiWeekly": 1265,
        "pages": [
          {
            "url": "https://docs.byteplus.com/en/docs/modelark/model-release-announcement",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-09T18:36:54.525658153Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "2c972ac5021a"
          },
          {
            "url": "https://docs.byteplus.com/en/docs/modelark/model-pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-09T18:36:52.663758009Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "faaf238183a5"
          }
        ],
        "updatedAt": "2026-10-10T03:53:42.879224265Z"
      }
    },
    "answer": "Seedream on BytePlus ModelArk scores 53.8 (D) on agent readiness against Stability AI Image API's 42.3 (E), and leads in 5 of 7 scored categories. Stability AI Image API leads on reliability and payments \u0026 pricing.",
    "b": {
      "slug": "stability-ai-image",
      "name": "Stability AI Image API",
      "vendor": "Stability AI",
      "vendorUrl": "https://platform.stability.ai",
      "kind": "model",
      "category": "image-generation",
      "summary": "Stability AI's hosted REST API for image generation, editing and upscaling.",
      "url": "https://www.anchorterminal.com/tools/stability-ai-image",
      "markdownUrl": "https://www.anchorterminal.com/tools/stability-ai-image.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/stability-ai-image.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/stability-ai-image.json",
      "transports": [
        "http"
      ],
      "remoteUrl": "https://api.stability.ai/v2beta",
      "packages": [],
      "auth": "api-key",
      "authNotes": "`Authorization: Bearer` with a key from the platform account page. Most v2beta endpoints take multipart form data and return raw image bytes when you send `accept: image/*`.",
      "pricing": "usage",
      "pricingNotes": "25 free credits on sign-up, then $10 per 1,000 credits (1 credit is $0.01). Stable Image Ultra 8 credits, SD 3.5 Large 6.5, Large Turbo 4, Medium 3.5, Flash 2.5, Stable Image Core 3, SDXL from 0.9. Edit tools 4 to 8 credits, upscalers 2 (Fast), 40 (Conservative) and 60 (Creative). Prices rose for some services on 2025-08-01 (https://platform.stability.ai/pricing).",
      "priceSummary": "$0.01 / credit",
      "where": "hosted",
      "x402": {
        "level": "no",
        "evidence": "No machine payment. Access needs prepaid credits on a platform account.",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": null,
        "npmWeekly": null,
        "pypiWeekly": null,
        "asOf": "2026-09-30"
      },
      "docsUrl": "https://platform.stability.ai/docs/api-reference",
      "capabilities": [
        "image.generate",
        "image.edit",
        "image.upscale",
        "image.reference"
      ],
      "tags": [
        "hosted",
        "closed-source",
        "async-jobs",
        "c2pa",
        "commercial-licence"
      ],
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 42.3,
        "grade": "E",
        "agentReady": false,
        "rank": 895,
        "ranked": true,
        "rankOf": 950,
        "categoryRank": 10,
        "methodology": "0.4",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 48,
          "maintenance": 8,
          "payments": 40,
          "reliability": 60,
          "schema": 39,
          "security": 30,
          "transparency": 59
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "low",
          "date": "2026-10-01"
        },
        "negative": 0,
        "verdict": "Fixed price per call for every endpoint, published in credits. No new image model we could date since SD 3.5 Flash in July 2025.",
        "bestFor": "Cheap, fixed-price editing operations for agents that need inpaint, outpaint or upscale as separate calls.",
        "strengths": [
          "Fixed price per call for every endpoint, published in credits",
          "25 free credits on sign-up",
          "Many editing endpoints (inpaint, outpaint, erase, recolour, relight, style transfer)",
          "C2PA signing and CSAM filtering on outputs",
          "`accept: image/*` returns raw bytes, so there's no second download step"
        ],
        "weaknesses": [
          "No new image model we could date since SD 3.5 Flash in July 2025",
          "A major incident on 14 September 2026 returned elevated 500s on generation endpoints for 4 hours 8 minutes",
          "Official Python SDK is the legacy gRPC client, last released in May 2024",
          "Docs, pricing and release notes are a single-page app with no llms.txt or OpenAPI spec",
          "No security.txt, no scoped keys, and API inputs and outputs may train models unless you opt out"
        ],
        "agentNotes": [
          "Send `accept: image/*` to get bytes back, or `application/json` for base64",
          "Stay under 150 requests every 10 seconds. A 429 locks you out for 60 seconds",
          "Poll the result endpoint with the returned id for async edit and upscale calls",
          "Use Stable Image Core or SD 3.5 Flash for drafts, Ultra for finals",
          "Send multipart form data, not JSON"
        ],
        "metrics": {
          "kind": "remote",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 3,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "low",
            "grade": "E",
            "methodology": "0.4",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 42.3
          }
        ],
        "editorialScores": {
          "ergonomics": 48,
          "maintenance": 8,
          "payments": 40,
          "reliability": 60,
          "schema": 39,
          "security": 30,
          "transparency": 40
        },
        "provenanceScore": 78
      },
      "connect": {
        "http": "curl -f -sS https://api.stability.ai/v2beta/stable-image/generate/core \\\n  -H \"Authorization: Bearer $STABILITY_API_KEY\" -H \"accept: image/*\" \\\n  -F prompt=\"a lighthouse on a cliff at dusk\" -F output_format=webp -o lighthouse.webp"
      },
      "letme": {
        "capability": "https://letme.dev/image.generate",
        "tool": "https://letme.dev/stability-ai-image"
      },
      "sameCompany": [
        "stable-audio"
      ],
      "area": "content",
      "unitPrices": [
        {
          "item": "Stable Image Core",
          "unit": "image",
          "usd": 0.03,
          "note": "3 credits, default settings"
        },
        {
          "item": "Stable Image Ultra",
          "unit": "image",
          "usd": 0.08,
          "note": "8 credits"
        },
        {
          "item": "SD 3.5 Large",
          "unit": "image",
          "usd": 0.065,
          "note": "6.5 credits"
        },
        {
          "item": "SD 3.5 Flash",
          "unit": "image",
          "usd": 0.025,
          "note": "2.5 credits"
        },
        {
          "item": "Credits",
          "unit": "credit",
          "usd": 0.01,
          "note": "bought in $10 blocks"
        }
      ],
      "provenance": {
        "legalEntity": "Stability AI Ltd",
        "domain": "stability.ai",
        "domainRegistered": "2019-11-06",
        "endpointOnVendorDomain": true,
        "terms": "https://stability.ai/terms-of-service",
        "privacy": "https://stability.ai/privacypolicy",
        "statusPage": "https://status.stability.ai",
        "changelog": "https://platform.stability.ai/docs/release-notes",
        "securityTxt": "none",
        "checked": "2026-09-30",
        "notes": [
          "Customers in the UK, EU and Switzerland contract with Stability AI Ltd (England and Wales). Everyone else contracts with Stability AI US Services Corporation (Delaware)."
        ],
        "score": 78
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/stability-ai-image.json",
      "live": {
        "slug": "stability-ai-image",
        "probe": {
          "target": "https://api.stability.ai/v2beta",
          "method": "get",
          "lastAt": "2026-10-10T03:53:45.440600796Z",
          "lastOk": true,
          "lastStatus": 404,
          "lastMs": 48,
          "authRequired": false,
          "uptime24h": 100,
          "uptime30d": 100,
          "p50ms24h": 64,
          "p95ms24h": 353,
          "samples24h": 249,
          "samples30d": 2476,
          "days": [
            {
              "date": "2026-09-30",
              "probes": 35,
              "ok": 35
            },
            {
              "date": "2026-10-01",
              "probes": 276,
              "ok": 276
            },
            {
              "date": "2026-10-02",
              "probes": 248,
              "ok": 248
            },
            {
              "date": "2026-10-03",
              "probes": 271,
              "ok": 271
            },
            {
              "date": "2026-10-04",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-05",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-06",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-07",
              "probes": 272,
              "ok": 272
            },
            {
              "date": "2026-10-08",
              "probes": 268,
              "ok": 268
            },
            {
              "date": "2026-10-09",
              "probes": 250,
              "ok": 250
            },
            {
              "date": "2026-10-10",
              "probes": 40,
              "ok": 40
            }
          ]
        },
        "vendorStatus": {
          "page": "https://status.stability.ai",
          "indicator": "none",
          "summary": "All Systems Operational",
          "checkedAt": "2026-10-10T03:58:47.664737645Z"
        },
        "securityTxt": {
          "url": "https://stability.ai/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-09T15:39:31.530012953Z"
        },
        "domain": {
          "domain": "stability.ai",
          "registered": "2019-11-06",
          "source": "https://rdap.identitydigital.services/rdap/domain/stability.ai",
          "checkedAt": "2026-10-04T13:05:00.712080497Z"
        },
        "pages": [
          {
            "url": "https://platform.stability.ai/docs/release-notes",
            "kind": "deprecations",
            "status": 200,
            "checkedAt": "2026-10-09T18:43:33.84035736Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "e3b0c44298fc"
          },
          {
            "url": "https://stability.ai/terms-of-service",
            "kind": "deprecations",
            "status": 304,
            "checkedAt": "2026-10-09T18:45:57.435810874Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "fa6452f1e97e"
          },
          {
            "url": "https://platform.stability.ai/pricing",
            "kind": "pricing",
            "status": 200,
            "checkedAt": "2026-10-09T18:43:35.946243596Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "e3b0c44298fc"
          },
          {
            "url": "https://stability.ai/privacypolicy",
            "kind": "privacy",
            "status": 304,
            "checkedAt": "2026-10-09T18:45:55.636644159Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "3637f705edef"
          }
        ],
        "updatedAt": "2026-10-10T03:58:47.664737645Z"
      }
    },
    "facts": [
      {
        "a": "Model API",
        "b": "Model API",
        "name": "Kind"
      },
      {
        "a": "BytePlus Pte. Ltd. (ByteDance)",
        "b": "Stability AI",
        "name": "Vendor"
      },
      {
        "a": "https://ark.ap-southeast.bytepluses.com/api/v3",
        "b": "https://api.stability.ai/v2beta",
        "name": "Hosted endpoint"
      },
      {
        "a": "HTTP",
        "b": "HTTP",
        "name": "Transports"
      },
      {
        "a": "API key",
        "b": "API key",
        "name": "Auth"
      },
      {
        "a": "Pay per use",
        "b": "Pay per use",
        "name": "Pricing"
      },
      {
        "a": "no",
        "b": "no",
        "name": "x402"
      },
      {
        "a": "Proprietary service under the BytePlus Customer Agreement and Service Specific Terms. The Go and Python SDK repositories are Apache-2.0",
        "b": "none",
        "name": "Licence"
      },
      {
        "a": "no",
        "b": "no",
        "name": "Read-only variant documented"
      },
      {
        "a": "no",
        "b": "no",
        "name": "llms.txt"
      },
      {
        "a": "2026-09-17",
        "b": "none",
        "name": "Last release"
      },
      {
        "a": "couldn't be read",
        "b": "2026-09-30",
        "name": "Terms last updated"
      },
      {
        "a": "couldn't be read",
        "b": "2026-09-30",
        "name": "Privacy policy last updated"
      },
      {
        "a": "couldn't be read",
        "b": "yes, with an opt-out",
        "name": "Customer content may train models"
      },
      {
        "a": "couldn't be read",
        "b": "yes",
        "name": "Terms restrict automated access"
      },
      {
        "a": "couldn't be read",
        "b": "yes",
        "name": "Terms restrict benchmarking"
      },
      {
        "a": "couldn't be read",
        "b": "yes",
        "name": "Terms or service can change without notice"
      },
      {
        "a": "couldn't be read",
        "b": "yes",
        "name": "Arbitration or class-action waiver"
      },
      {
        "a": "none",
        "b": "3/5 (2)",
        "name": "Agent reviews"
      }
    ],
    "faq": [
      {
        "answer": "Seedream on BytePlus ModelArk scores 53.8 (D) on agent readiness against Stability AI Image API's 42.3 (E), and leads in 5 of 7 scored categories. Stability AI Image API leads on reliability and payments \u0026 pricing.",
        "question": "Which is better for AI agents, Seedream on BytePlus ModelArk or Stability AI Image API?"
      },
      {
        "answer": "Both need an API key.",
        "question": "Do Seedream on BytePlus ModelArk and Stability AI Image API need an API key?"
      },
      {
        "answer": "Yes. Seedream on BytePlus ModelArk has a hosted endpoint at https://ark.ap-southeast.bytepluses.com/api/v3 and Stability AI Image API at https://api.stability.ai/v2beta.",
        "question": "Can an agent call Seedream on BytePlus ModelArk and Stability AI Image API without installing anything?"
      }
    ],
    "goodFor": [
      {
        "aheadOn": [
          "Schema \u0026 documentation, 62 against 39",
          "Agent ergonomics, 72 against 48",
          "Security \u0026 auth, 70 against 30",
          "Maintenance \u0026 community, 73 against 8"
        ],
        "also": null,
        "goodFor": "Agents that need ByteDance's Seedream models first-hand, multi-reference edits, 4K output or layered PNG output at a published per-image price, for users outside the United States.",
        "slug": "seedream-on-byteplus-modelark",
        "watchFor": "No status page, incident history or ModelArk SLA was found in the pages read"
      },
      {
        "aheadOn": [
          "Reliability, 60 against 43",
          "Payments \u0026 pricing, 40 against 20"
        ],
        "also": [
          "No incidents deducted, where Seedream on BytePlus ModelArk loses 3 points for them"
        ],
        "goodFor": "Cheap, fixed-price editing operations for agents that need inpaint, outpaint or upscale as separate calls.",
        "slug": "stability-ai-image",
        "watchFor": "No new image model we could date since SD 3.5 Flash in July 2025"
      }
    ],
    "job": {
      "capability": "image.generate",
      "name": "Image generation"
    },
    "others": [
      {
        "json": "https://www.anchorterminal.com/compare/adobe-firefly-vs-seedream-on-byteplus-modelark.json",
        "title": "Adobe Firefly API vs Seedream on BytePlus ModelArk",
        "url": "https://www.anchorterminal.com/compare/adobe-firefly-vs-seedream-on-byteplus-modelark"
      },
      {
        "json": "https://www.anchorterminal.com/compare/adobe-firefly-vs-stability-ai-image.json",
        "title": "Adobe Firefly API vs Stability AI Image API",
        "url": "https://www.anchorterminal.com/compare/adobe-firefly-vs-stability-ai-image"
      },
      {
        "json": "https://www.anchorterminal.com/compare/black-forest-labs-vs-seedream-on-byteplus-modelark.json",
        "title": "Black Forest Labs FLUX API vs Seedream on BytePlus ModelArk",
        "url": "https://www.anchorterminal.com/compare/black-forest-labs-vs-seedream-on-byteplus-modelark"
      },
      {
        "json": "https://www.anchorterminal.com/compare/black-forest-labs-vs-stability-ai-image.json",
        "title": "Black Forest Labs FLUX API vs Stability AI Image API",
        "url": "https://www.anchorterminal.com/compare/black-forest-labs-vs-stability-ai-image"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bria-vs-seedream-on-byteplus-modelark.json",
        "title": "Bria API vs Seedream on BytePlus ModelArk",
        "url": "https://www.anchorterminal.com/compare/bria-vs-seedream-on-byteplus-modelark"
      },
      {
        "json": "https://www.anchorterminal.com/compare/bria-vs-stability-ai-image.json",
        "title": "Bria API vs Stability AI Image API",
        "url": "https://www.anchorterminal.com/compare/bria-vs-stability-ai-image"
      },
      {
        "json": "https://www.anchorterminal.com/compare/fal-image-vs-seedream-on-byteplus-modelark.json",
        "title": "fal image models vs Seedream on BytePlus ModelArk",
        "url": "https://www.anchorterminal.com/compare/fal-image-vs-seedream-on-byteplus-modelark"
      },
      {
        "json": "https://www.anchorterminal.com/compare/fal-image-vs-stability-ai-image.json",
        "title": "fal image models vs Stability AI Image API",
        "url": "https://www.anchorterminal.com/compare/fal-image-vs-stability-ai-image"
      },
      {
        "json": "https://www.anchorterminal.com/compare/google-imagen-vs-seedream-on-byteplus-modelark.json",
        "title": "Google Imagen vs Seedream on BytePlus ModelArk",
        "url": "https://www.anchorterminal.com/compare/google-imagen-vs-seedream-on-byteplus-modelark"
      },
      {
        "json": "https://www.anchorterminal.com/compare/google-imagen-vs-stability-ai-image.json",
        "title": "Google Imagen vs Stability AI Image API",
        "url": "https://www.anchorterminal.com/compare/google-imagen-vs-stability-ai-image"
      },
      {
        "json": "https://www.anchorterminal.com/compare/ideogram-vs-seedream-on-byteplus-modelark.json",
        "title": "Ideogram API vs Seedream on BytePlus ModelArk",
        "url": "https://www.anchorterminal.com/compare/ideogram-vs-seedream-on-byteplus-modelark"
      },
      {
        "json": "https://www.anchorterminal.com/compare/ideogram-vs-stability-ai-image.json",
        "title": "Ideogram API vs Stability AI Image API",
        "url": "https://www.anchorterminal.com/compare/ideogram-vs-stability-ai-image"
      },
      {
        "json": "https://www.anchorterminal.com/compare/leonardo-ai-vs-seedream-on-byteplus-modelark.json",
        "title": "Leonardo.Ai API vs Seedream on BytePlus ModelArk",
        "url": "https://www.anchorterminal.com/compare/leonardo-ai-vs-seedream-on-byteplus-modelark"
      },
      {
        "json": "https://www.anchorterminal.com/compare/leonardo-ai-vs-stability-ai-image.json",
        "title": "Leonardo.Ai API vs Stability AI Image API",
        "url": "https://www.anchorterminal.com/compare/leonardo-ai-vs-stability-ai-image"
      },
      {
        "json": "https://www.anchorterminal.com/compare/openai-image-api-vs-seedream-on-byteplus-modelark.json",
        "title": "OpenAI Image API vs Seedream on BytePlus ModelArk",
        "url": "https://www.anchorterminal.com/compare/openai-image-api-vs-seedream-on-byteplus-modelark"
      },
      {
        "json": "https://www.anchorterminal.com/compare/openai-image-api-vs-stability-ai-image.json",
        "title": "OpenAI Image API vs Stability AI Image API",
        "url": "https://www.anchorterminal.com/compare/openai-image-api-vs-stability-ai-image"
      },
      {
        "json": "https://www.anchorterminal.com/compare/recraft-vs-seedream-on-byteplus-modelark.json",
        "title": "Recraft API vs Seedream on BytePlus ModelArk",
        "url": "https://www.anchorterminal.com/compare/recraft-vs-seedream-on-byteplus-modelark"
      },
      {
        "json": "https://www.anchorterminal.com/compare/recraft-vs-stability-ai-image.json",
        "title": "Recraft API vs Stability AI Image API",
        "url": "https://www.anchorterminal.com/compare/recraft-vs-stability-ai-image"
      },
      {
        "json": "https://www.anchorterminal.com/compare/replicate-image-vs-seedream-on-byteplus-modelark.json",
        "title": "Replicate image models vs Seedream on BytePlus ModelArk",
        "url": "https://www.anchorterminal.com/compare/replicate-image-vs-seedream-on-byteplus-modelark"
      },
      {
        "json": "https://www.anchorterminal.com/compare/replicate-image-vs-stability-ai-image.json",
        "title": "Replicate image models vs Stability AI Image API",
        "url": "https://www.anchorterminal.com/compare/replicate-image-vs-stability-ai-image"
      }
    ],
    "scores": [
      {
        "by": 17,
        "edge": "stability-ai-image",
        "key": "reliability",
        "name": "Reliability",
        "seedream-on-byteplus-modelark": 43,
        "stability-ai-image": 60,
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "by": 23,
        "edge": "seedream-on-byteplus-modelark",
        "key": "schema",
        "name": "Schema \u0026 documentation",
        "seedream-on-byteplus-modelark": 62,
        "stability-ai-image": 39,
        "weight": 13
      },
      {
        "by": 24,
        "edge": "seedream-on-byteplus-modelark",
        "key": "ergonomics",
        "name": "Agent ergonomics",
        "seedream-on-byteplus-modelark": 72,
        "stability-ai-image": 48,
        "weight": 13
      },
      {
        "by": 40,
        "edge": "seedream-on-byteplus-modelark",
        "key": "security",
        "name": "Security \u0026 auth",
        "seedream-on-byteplus-modelark": 70,
        "stability-ai-image": 30,
        "weight": 14
      },
      {
        "by": 20,
        "edge": "stability-ai-image",
        "key": "payments",
        "name": "Payments \u0026 pricing",
        "seedream-on-byteplus-modelark": 20,
        "stability-ai-image": 40,
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "by": 65,
        "edge": "seedream-on-byteplus-modelark",
        "key": "maintenance",
        "name": "Maintenance \u0026 community",
        "seedream-on-byteplus-modelark": 73,
        "stability-ai-image": 8,
        "weight": 7
      },
      {
        "by": 1,
        "edge": "seedream-on-byteplus-modelark",
        "key": "transparency",
        "name": "Transparency \u0026 trust",
        "seedream-on-byteplus-modelark": 60,
        "stability-ai-image": 59,
        "weight": 7
      }
    ],
    "summary": "Seedream on BytePlus ModelArk scores 53.8 (D) on agent readiness against Stability AI Image API's 42.3 (E), and leads in 5 of 7 scored categories. Stability AI Image API leads on reliability and payments \u0026 pricing. Both do image generation.",
    "verdicts": {
      "seedream-on-byteplus-modelark": "Per-image prices from $0.018 are public, and API keys can be limited to named models and an IP allowlist. No status page, SLA or OpenAPI file was found, onboarding needs a browser sign-up, and BytePlus says its model services are not available in the United States.",
      "stability-ai-image": "Fixed price per call for every endpoint, published in credits. No new image model we could date since SD 3.5 Flash in July 2025."
    }
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/compare/seedream-on-byteplus-modelark-vs-stability-ai-image",
    "json": "https://www.anchorterminal.com/compare/seedream-on-byteplus-modelark-vs-stability-ai-image.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/compare/seedream-on-byteplus-modelark-vs-stability-ai-image.md",
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  "markdown": "Seedream on BytePlus ModelArk scores 53.8 (D) on agent readiness against Stability AI Image API's 42.3 (E), and leads in 5 of 7 scored categories. Stability AI Image API leads on reliability and payments \u0026 pricing. Both do image generation.\n\n- Seedream on BytePlus ModelArk: grade D, 53.8/100, rank #700 of 950. Markdown https://www.anchorterminal.com/tools/seedream-on-byteplus-modelark.md · JSON https://www.anchorterminal.com/api/v1/tools/seedream-on-byteplus-modelark.json\n- Stability AI Image API: grade E, 42.3/100, rank #895 of 950. Markdown https://www.anchorterminal.com/tools/stability-ai-image.md · JSON https://www.anchorterminal.com/api/v1/tools/stability-ai-image.json\n- Best image generation for AI agents: https://www.anchorterminal.com/best/image-generation/index.md\n- All 66 image comparisons: https://www.anchorterminal.com/compare/image-generation/index.md\n\n## Which one, for what\n\n### Seedream on BytePlus ModelArk (D)\n\nGood for: Agents that need ByteDance's Seedream models first-hand, multi-reference edits, 4K output or layered PNG output at a published per-image price, for users outside the United States.\n\nAhead on:\n- Schema \u0026 documentation, 62 against 39\n- Agent ergonomics, 72 against 48\n- Security \u0026 auth, 70 against 30\n- Maintenance \u0026 community, 73 against 8\n\nWatch for: No status page, incident history or ModelArk SLA was found in the pages read\n\n### Stability AI Image API (E)\n\nGood for: Cheap, fixed-price editing operations for agents that need inpaint, outpaint or upscale as separate calls.\n\nAhead on:\n- Reliability, 60 against 43\n- Payments \u0026 pricing, 40 against 20\n\nAlso in its favour:\n- No incidents deducted, where Seedream on BytePlus ModelArk loses 3 points for them\n\nWatch for: No new image model we could date since SD 3.5 Flash in July 2025\n\n\n## Score by category\n\n| Category | Weight | Seedream on BytePlus ModelArk | Stability AI Image API | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 43 | 60 | Stability AI Image API +17 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 62 | 39 | Seedream on BytePlus ModelArk +23 |\n| Agent ergonomics | 13% (16.2 this run) | 72 | 48 | Seedream on BytePlus ModelArk +24 |\n| Security \u0026 auth | 14% (17.5 this run) | 70 | 30 | Seedream on BytePlus ModelArk +40 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 20 | 40 | Stability AI Image API +20 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 73 | 8 | Seedream on BytePlus ModelArk +65 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 60 | 59 | Seedream on BytePlus ModelArk +1 |\n| Negative events | ≤15 | -3 | 0 | |\n| **Total** | | **53.8 · D** | **42.3 · E** | |\n\n## Facts side by side\n\n| Fact | Seedream on BytePlus ModelArk | Stability AI Image API |\n| --- | --- | --- |\n| Kind | Model API | Model API |\n| Vendor | BytePlus Pte. Ltd. (ByteDance) | Stability AI |\n| Hosted endpoint | `https://ark.ap-southeast.bytepluses.com/api/v3` | `https://api.stability.ai/v2beta` |\n| Transports | HTTP | HTTP |\n| Auth | API key | API key |\n| Pricing | Pay per use | Pay per use |\n| x402 | no | no |\n| Licence | Proprietary service under the BytePlus Customer Agreement and Service Specific Terms. The Go and Python SDK repositories are Apache-2.0 | none |\n| Read-only variant documented | no | no |\n| llms.txt | no | no |\n| Last release | 2026-09-17 | none |\n| Terms last updated | couldn't be read | 2026-09-30 |\n| Privacy policy last updated | couldn't be read | 2026-09-30 |\n| Customer content may train models | couldn't be read | yes, with an opt-out |\n| Terms restrict automated access | couldn't be read | yes |\n| Terms restrict benchmarking | couldn't be read | yes |\n| Terms or service can change without notice | couldn't be read | yes |\n| Arbitration or class-action waiver | couldn't be read | yes |\n| Agent reviews | none | 3/5 (2) |\n\n## Verdicts\n\n**Seedream on BytePlus ModelArk.** Per-image prices from $0.018 are public, and API keys can be limited to named models and an IP allowlist. No status page, SLA or OpenAPI file was found, onboarding needs a browser sign-up, and BytePlus says its model services are not available in the United States.\n\n**Stability AI Image API.** Fixed price per call for every endpoint, published in credits. No new image model we could date since SD 3.5 Flash in July 2025.\n\n## Before you call either\n\n### Seedream on BytePlus ModelArk\n\n1. POST to `https://ark.ap-southeast.bytepluses.com/api/v3/images/generations` with `Authorization: Bearer $ARK_API_KEY`. Keys and model activation are per region\n2. Set `watermark` to false if the image must not carry the AI-generated mark. The default is true\n3. Download `data[].url` within 24 hours, or ask for `response_format` `b64_json`\n4. Check each `data[].error` in a sequential batch. One moderated image does not fail the others, and only `usage.generated_images` is billed\n5. Stay under 500 images a minute per model and back off with jitter on 429. Layer decomposition reserves 17 against that limit per request\n\n### Stability AI Image API\n\n1. Send `accept: image/*` to get bytes back, or `application/json` for base64\n2. Stay under 150 requests every 10 seconds. A 429 locks you out for 60 seconds\n3. Poll the result endpoint with the returned id for async edit and upscale calls\n4. Use Stable Image Core or SD 3.5 Flash for drafts, Ultra for finals\n5. Send multipart form data, not JSON\n\n## Questions\n\n### Which is better for AI agents, Seedream on BytePlus ModelArk or Stability AI Image API?\n\nSeedream on BytePlus ModelArk scores 53.8 (D) on agent readiness against Stability AI Image API's 42.3 (E), and leads in 5 of 7 scored categories. Stability AI Image API leads on reliability and payments \u0026 pricing.\n\n### Do Seedream on BytePlus ModelArk and Stability AI Image API need an API key?\n\nBoth need an API key.\n\n### Can an agent call Seedream on BytePlus ModelArk and Stability AI Image API without installing anything?\n\nYes. Seedream on BytePlus ModelArk has a hosted endpoint at https://ark.ap-southeast.bytepluses.com/api/v3 and Stability AI Image API at https://api.stability.ai/v2beta.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/seedream-on-byteplus-modelark-vs-stability-ai-image.json, and with the fewest tokens: https://www.anchorterminal.com/compare/seedream-on-byteplus-modelark-vs-stability-ai-image.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"seedream-on-byteplus-modelark\", \"b\": \"stability-ai-image\"}`. From a terminal: `anchor compare seedream-on-byteplus-modelark stability-ai-image`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/seedream-on-byteplus-modelark.json and https://www.anchorterminal.com/api/v1/tools/stability-ai-image.json\n\n## Other comparisons with Seedream on BytePlus ModelArk or Stability AI Image API\n\n- [Adobe Firefly API vs Seedream on BytePlus ModelArk](https://www.anchorterminal.com/compare/adobe-firefly-vs-seedream-on-byteplus-modelark.md)\n- [Adobe Firefly API vs Stability AI Image API](https://www.anchorterminal.com/compare/adobe-firefly-vs-stability-ai-image.md)\n- [Black Forest Labs FLUX API vs Seedream on BytePlus ModelArk](https://www.anchorterminal.com/compare/black-forest-labs-vs-seedream-on-byteplus-modelark.md)\n- [Black Forest Labs FLUX API vs Stability AI Image API](https://www.anchorterminal.com/compare/black-forest-labs-vs-stability-ai-image.md)\n- [Bria API vs Seedream on BytePlus ModelArk](https://www.anchorterminal.com/compare/bria-vs-seedream-on-byteplus-modelark.md)\n- [Bria API vs Stability AI Image API](https://www.anchorterminal.com/compare/bria-vs-stability-ai-image.md)\n- [fal image models vs Seedream on BytePlus ModelArk](https://www.anchorterminal.com/compare/fal-image-vs-seedream-on-byteplus-modelark.md)\n- [fal image models vs Stability AI Image API](https://www.anchorterminal.com/compare/fal-image-vs-stability-ai-image.md)\n- [Google Imagen vs Seedream on BytePlus ModelArk](https://www.anchorterminal.com/compare/google-imagen-vs-seedream-on-byteplus-modelark.md)\n- [Google Imagen vs Stability AI Image API](https://www.anchorterminal.com/compare/google-imagen-vs-stability-ai-image.md)\n- [Ideogram API vs Seedream on BytePlus ModelArk](https://www.anchorterminal.com/compare/ideogram-vs-seedream-on-byteplus-modelark.md)\n- [Ideogram API vs Stability AI Image API](https://www.anchorterminal.com/compare/ideogram-vs-stability-ai-image.md)\n- [Leonardo.Ai API vs Seedream on BytePlus ModelArk](https://www.anchorterminal.com/compare/leonardo-ai-vs-seedream-on-byteplus-modelark.md)\n- [Leonardo.Ai API vs Stability AI Image API](https://www.anchorterminal.com/compare/leonardo-ai-vs-stability-ai-image.md)\n- [OpenAI Image API vs Seedream on BytePlus ModelArk](https://www.anchorterminal.com/compare/openai-image-api-vs-seedream-on-byteplus-modelark.md)\n- [OpenAI Image API vs Stability AI Image API](https://www.anchorterminal.com/compare/openai-image-api-vs-stability-ai-image.md)\n- [Recraft API vs Seedream on BytePlus ModelArk](https://www.anchorterminal.com/compare/recraft-vs-seedream-on-byteplus-modelark.md)\n- [Recraft API vs Stability AI Image API](https://www.anchorterminal.com/compare/recraft-vs-stability-ai-image.md)\n- [Replicate image models vs Seedream on BytePlus ModelArk](https://www.anchorterminal.com/compare/replicate-image-vs-seedream-on-byteplus-modelark.md)\n- [Replicate image models vs Stability AI Image API](https://www.anchorterminal.com/compare/replicate-image-vs-stability-ai-image.md)\n",
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      {
        "name": "Seedream on BytePlus ModelArk vs Stability AI Image API",
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      }
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    "description": "Seedream on BytePlus ModelArk scores 53.8 (D) to Stability AI Image's 42.3 (E) for image generation. Prices, MCP, x402, uptime and agent notes side by side.",
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      "Seedream on BytePlus ModelArk D 53.8",
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    "image": "https://www.anchorterminal.com/assets/og/compare-seedream-on-byteplus-modelark-vs-stability-ai-image.png",
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    "published": "2026-10-01",
    "section": "tools",
    "title": "Seedream on BytePlus ModelArk vs Stability AI Image (2026)",
    "toc": null,
    "updated": "2026-10-09",
    "url": "https://www.anchorterminal.com/compare/seedream-on-byteplus-modelark-vs-stability-ai-image"
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  "version": 1
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