{ "data": { "a": { "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", "dns": "stability-ai-image.grade.anchorterminal.com", "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": 42.4, "grade": "E", "agentReady": false, "rank": 1117, "ranked": true, "rankOf": 1266, "categoryRank": 12, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 48, "maintenance": 8, "payments": 40, "reliability": 60, "schema": 39, "security": 30, "transparency": 61 }, "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": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 42.4 } ], "editorialScores": { "ergonomics": 48, "maintenance": 8, "payments": 40, "reliability": 60, "schema": 39, "security": 30, "transparency": 40 }, "provenanceScore": 81, "checked": { "categories": { "ergonomics": "2026-10-01", "maintenance": "2026-10-01", "payments": "2026-10-01", "reliability": "2026-10-01", "schema": "2026-10-01", "security": "2026-10-01", "transparency": "2026-10-01" }, "last": "2026-10-01", "lastMoved": "2026-10-27", "oldest": "2026-10-01", "stale": false, "staleAfterDays": 90 } }, "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": 81 }, "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": "2026-11-02T15:06:59.54383493Z", "lastOk": true, "lastStatus": 404, "lastMs": 251, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 224, "p95ms24h": 306, "samples24h": 249, "samples30d": 8046, "days": [ { "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": 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": 158, "ok": 158 } ] }, "vendorStatus": { "page": "https://status.stability.ai", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-11-02T15:07:03.171811656Z" }, "securityTxt": { "url": "https://stability.ai/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-01T15:43:10.121130216Z" }, "domain": { "domain": "stability.ai", "registered": "2019-11-06", "source": "https://rdap.identitydigital.services/rdap/domain/stability.ai", "checkedAt": "2026-11-01T14:26:11.748034481Z" }, "pages": [ { "url": "https://platform.stability.ai/docs/release-notes", "kind": "deprecations", "status": 304, "checkedAt": "2026-11-02T07:22:54.190396035Z", "changedAt": "2026-10-29T05:13:06.160007822Z", "fingerprint": "7fe004492bec" }, { "url": "https://stability.ai/terms-of-service", "kind": "deprecations", "status": 304, "checkedAt": "2026-11-02T07:26:21.669833941Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "fa6452f1e97e" }, { "url": "https://platform.stability.ai/pricing", "kind": "pricing", "status": 304, "checkedAt": "2026-11-02T07:22:56.344314938Z", "changedAt": "2026-10-29T05:13:08.344038827Z", "fingerprint": "066bd2402e5b" }, { "url": "https://stability.ai/privacypolicy", "kind": "privacy", "status": 304, "checkedAt": "2026-11-02T07:26:19.915618746Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "3637f705edef" } ], "updatedAt": "2026-11-02T15:06:59.54383493Z" } }, "answer": "Stability AI Image API scores 42.4 (E) on agent readiness against SurgePix API's 36 (F), and leads in 3 of 7 scored categories. SurgePix API leads on agent ergonomics, security \u0026 auth and maintenance \u0026 community.", "b": { "slug": "surgepix", "name": "SurgePix API", "vendor": "SurgePix", "vendorUrl": "https://surgepix.ai", "kind": "http-api", "category": "image-generation", "summary": "SurgePix is a web design workspace that generates and edits images, posters and slide decks. A REST API with API keys, async tasks and file upload is called through MIT-licensed agent skills for coding agents.", "url": "https://www.anchorterminal.com/tools/surgepix", "markdownUrl": "https://www.anchorterminal.com/tools/surgepix.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/surgepix.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/surgepix.json", "dns": "surgepix.grade.anchorterminal.com", "repo": "https://github.com/SurgePix/agent-skills", "license": "Proprietary hosted service under the Surgepix User Agreement, which names no company and restricts commercial use without SurgePix's permission. The agent skills repository is MIT", "transports": [ "http" ], "remoteUrl": "https://api.surgepix.ai/api", "packages": [], "auth": "api-key", "authNotes": "An API key starting `sk-`, created and managed in the account's settings on surgepix.ai, sent as the raw value of the `authorization` header with no `Bearer` prefix. The docs say a leaked key can be revoked and reset. No scopes, read-only keys or spend caps were found. The skills read the key from `SURGEPIX_API_KEY` and also need `SURGEPIX_BASE_URL` set to https://api.surgepix.ai/api (https://surgepix.ai/blog/developer-guides/api-keys-reference, https://surgepix.ai/blog/developer-guides/install-skills).", "pricing": "freemium", "pricingNotes": "Free plan with 25 credits a day that don't roll over. Basic is $9.90 a month (2,000 credits) or $95.04 a year, and Pro $24.90 a month (11,500 credits) or $239.04 a year, with introductory prices of $0.99 and $4.99 a month for three months. Credits are spent on input and output tokens, and a failed generation charges the input only. No per-call API price is published, and the changelog says skills calling SurgePix's own models don't use credits (9 July 2026) and that some models are billed per generation (9 September 2026) (https://surgepix.ai/blog/introduction/credit-subscription/plans-pricing, https://surgepix.ai/blog/introduction/credit-subscription/how-credits-work, https://surgepix.ai/blog/whats-new/updates).", "priceSummary": "$9.90 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the API reference, the skills, the pricing pages or the terms. Access is by an API key from a browser account, and the privacy policy names Alipay and WeChat Pay for payments (checked 2026-11-02).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-11-02" }, "docsUrl": "https://surgepix.ai/blog/developer-guides/api-keys-reference", "capabilities": [ "image.generate", "image.edit" ], "tags": [ "hosted", "closed-source", "agent-skills", "async-jobs", "freemium", "free-tier", "no-status-page", "new" ], "lastRelease": "2026-10-23", "graded": true, "anchor": { "graded": true, "score": 36, "grade": "F", "agentReady": false, "rank": 1173, "ranked": true, "rankOf": 1266, "categoryRank": 14, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 53, "maintenance": 66, "payments": 20, "reliability": 15, "schema": 40, "security": 41, "transparency": 28 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-02" }, "negative": 0, "verdict": "A small, readable API with async tasks and MIT skill scripts that cover posters, decks, edits and translation. Only background removal is documented, the terms name no company and restrict commercial use and automated querying, and uploaded files become public URLs.", "bestFor": "An agent that needs finished marketing assets, such as posters, slide decks, Xiaohongshu carousels, logos and translated images, as one file from a short request.", "strengths": [ "The API reference gives request tables, JSON examples and an error table for upload, background removal and task polling", "Every task returns one download URL, or one ZIP for a set, so responses stay small", "The MIT skill scripts show the request bodies for 11 undocumented generation and edit endpoints", "Free plan with 25 credits a day, and a failed generation charges only the input tokens", "Dated public changelog with entries on 15, 22 and 23 October 2026" ], "weaknesses": [ "Only background removal and upload are in the public API reference, with no OpenAPI file or llms.txt", "No status page, rate limits, 429 guidance or SLA was found", "The terms and privacy policy name no company or address, and the terms restrict commercial use without permission", "Uploaded files become publicly accessible URLs on Tencent Cloud storage in Seoul, and no retention period is given", "No scopes, read-only keys, security.txt or disclosure policy was found" ], "agentNotes": [ "Send the key as the raw `authorization` header value, with no `Bearer` prefix", "Don't upload confidential files. The upload flow returns a public URL for every file", "Check `code` in the JSON body as well as the HTTP status, since failures come back as a non-zero `code` with a `msg`", "Poll `GET /tasks/{taskId}` within 24 hours, after which the task returns 404", "Get written permission before using outputs commercially, since the terms restrict commercial use" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "F", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 36 } ], "editorialScores": { "ergonomics": 53, "maintenance": 66, "payments": 20, "reliability": 15, "schema": 40, "security": 41, "transparency": 14 }, "provenanceScore": 41, "checked": { "categories": { "ergonomics": "2026-11-02", "maintenance": "2026-11-02", "payments": "2026-11-02", "reliability": "2026-11-02", "schema": "2026-11-02", "security": "2026-11-02", "transparency": "2026-11-02" }, "last": "2026-11-02", "oldest": "2026-11-02", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "npx skills add SurgePix/agent-skills", "http": "curl --request POST \\\n --url https://api.surgepix.ai/api/tasks/remove-background \\\n --header 'authorization: sk-YOUR_API_KEY' \\\n --header 'Content-Type: application/json' \\\n --data '{\"fileUrl\": \"\u003cURL from the upload flow\u003e\", \"noWait\": true}'" }, "letme": { "capability": "https://letme.dev/image.generate", "tool": "https://letme.dev/surgepix" }, "area": "content", "unitPrices": [ { "item": "Basic plan, 2,000 credits", "unit": "month", "usd": 9.9, "note": "$0.99 a month for the first three months; about 130 image generations a month per the pricing page" }, { "item": "Pro plan, 11,500 credits", "unit": "month", "usd": 24.9, "note": "$4.99 a month for the first three months; about 750 image generations a month per the pricing page" } ], "provenance": { "legalEntity": "", "domain": "surgepix.ai", "domainRegistered": "2025-11-06", "endpointOnVendorDomain": true, "terms": "https://surgepix.ai/blog/legal/terms-of-service", "privacy": "https://surgepix.ai/blog/legal/privacy-policy", "statusPage": "", "changelog": "https://surgepix.ai/blog/whats-new/updates", "securityTxt": "none", "checked": "2026-11-02", "notes": [ "The Surgepix User Agreement names no company or address. It applies the laws of the People's Republic of China, sends disputes to the court where \"Surgepix's limited company\" is located, and refers to users outside mainland China.", "The privacy policy, dated 10 June 2026 at the top and 1 July 2022 near the end, gives the service provider as \"Surgepix.ai\" and says information is stored on \"domestic servers\".", "The contact email on every surgepix.ai page is at tate-a-tate.com. Tate-A-Tate's terms name Torsi Information Technology Co., Ltd. as its provider, and surgepix.ai's footer links Tate-A-Tate and Surgeflow. SurgePix's own pages don't name Torsi.", "RDAP for surgepix.ai gives a registration date of 6 November 2025 through Aceville Pte. Ltd., Cloudflare name servers and a registrant in Beijing, China.", "surgepix.ai/.well-known/security.txt and /security.txt return 404. status.surgepix.ai doesn't resolve and no status page is linked.", "The API answers at api.surgepix.ai under the product's own domain. Uploads and outputs are served from Tencent Cloud Object Storage buckets in ap-seoul." ], "score": 41 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/surgepix.json", "live": { "slug": "surgepix", "probe": { "target": "https://api.surgepix.ai/api", "method": "get", "lastAt": "2026-11-02T15:07:00.16742116Z", "lastOk": true, "lastStatus": 401, "lastMs": 1202, "lastNote": "asks for credentials", "authRequired": true, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 1204, "p95ms24h": 1340, "samples24h": 41, "samples30d": 41, "days": [ { "date": "2026-11-02", "probes": 41, "ok": 41 } ] }, "updatedAt": "2026-11-02T15:07:00.16742116Z" } }, "edges": [ { "by": 58, "category": "maintenance", "leads": "surgepix", "name": "Maintenance \u0026 community", "reasons": { "a": "The last image release in the notes, per the listing, is Style Transfer in April 2025, but Stability's own API notebooks on GitHub added SD 3.5 Flash on 31 July 2025. Either way it's more than 180 days ago (0). Newer work covers audio, with Stable Audio 3 examples added on 14 May 2026, not images (0). Public release notes and support, not tested (5). The official Python SDK is the gRPC client last released in May 2024 (3). Nothing current to assess (0).", "b": "The last dated change is GPT-Image-2.5 on 23 October 2026, 10 days before the check (30). Changelog entries on 15, 22 and 23 October, 16, 9 and 2 September 2026, more than three in 90 days (20). For a closed service, a dated changelog, a Discord server and a contact email. We didn't open Discord or the GitHub issues, so answering isn't confirmed (8). No official SDK. The skills are maintained client scripts with tags from v1.0.0 (4 June 2026) to v1.5.0 (2 September 2026), a judgement call (5). The repository's CI checks SKILL.md front matter only, with no tests, and the skills aren't published as a package (3). 30+20+8+5+3 = 66." }, "scores": { "a": 8, "b": 66 } }, { "by": 45, "category": "reliability", "leads": "stability-ai-image", "name": "Reliability", "reasons": { "a": "Status page at status.stability.ai on Statuspage, with incident JSON (20). One incident in the last 90 days, rated major, elevated 500s on generation endpoints across the API Platform, Brand Studio and Stable Audio from 16:33 to 20:41 UTC on 14 September 2026, 4 hours 8 minutes (10). Limit of 150 requests every 10 seconds, per the listing's 30 September check (15). A 429 locks the caller out for 60 seconds, documented, but no Retry-After or backoff advice (10). No SLA (0). The endpoints agents call sit under `/v2beta` (5).", "b": "Read with the hosted lines. No status page was found on surgepix.ai or in the docs, and status.surgepix.ai doesn't resolve (0). With no history to read, the incident line takes the floor (5). No rate limits with numbers are documented. The terms say \"non-human continuous or frequent query operations\" lead to automatic account suspension, with no threshold given (0). No 429 or backoff guidance. The skill scripts poll every 2 seconds for up to 5 to 15 minutes, but that is client code, not a documented policy (0). No SLA, and the terms disclaim uninterrupted service (0). The API isn't labelled beta or preview, and API keys have been self-serve since 2 June 2026 per the changelog (10). 0+5+0+0+0+10 = 15." }, "scores": { "a": 60, "b": 15 } }, { "by": 33, "category": "transparency", "leads": "stability-ai-image", "name": "Transparency \u0026 trust", "reasons": { "a": "Closed API under terms that took effect on 30 September 2026. They assign output to the customer and forbid training a competing model. SD 3.5 weights are public under Stability's community licence, not an OSI licence (15). The privacy policy (effective 31 July 2025) says inputs and outputs may be used for training with an opt-out, and gives no retention period for API content (10). Dated notices for the July 2025 end of SVD and SD 1.6 and the August 2025 price rise (10). Processing in the US with controllers named per region, no subprocessor list (5).", "b": "The editorial half. A closed service whose terms name no company or address. They restrict any commercial use of what the service produces without SurgePix's permission, and contain clauses from an unrelated product (a \"big data\" query platform and \"non-resume content\"). The skills are MIT. Unclear terms, with a little credit for the open skills (5). The privacy policy is dated both 10 June 2026 and 1 July 2022, describes WeChat and phone registration and \"domestic servers\", and gives no retention periods. The API reference says uploads go to Tencent Cloud storage in Seoul as public URLs. No DPA. The statements don't agree (5). No deprecation policy or notices, and the terms let changes take effect on publication without notice (0). Tencent Cloud Object Storage in ap-seoul is named in the API reference, and Alipay and WeChat Pay in the privacy policy. No subprocessor list or stated data location (4). 5+5+0+4 = 14." }, "scores": { "a": 61, "b": 28 } }, { "by": 20, "category": "payments", "leads": "stability-ai-image", "name": "Payments \u0026 pricing", "reasons": { "a": "No x402, MPP or L402 (0). Fixed credit prices per call published at $0.01 a credit (20). 25 free credits on sign-up (20). Browser sign-up (0).", "b": "No x402, MPP or L402 (0). Plan prices and monthly credits are public, but credits are spent per token with no per-call price for any API task, so plan-only pricing (10). A free plan with 25 credits a day. The pages don't say whether a card is needed or whether a free account can create API keys, so half, a judgement call (10). A person signs up in a browser and creates the key in settings (0). 0+10+10+0 = 20." }, "scores": { "a": 40, "b": 20 } }, { "by": 11, "category": "security", "leads": "surgepix", "name": "Security \u0026 auth", "reasons": { "a": "One bearer API key per account from the platform page, no scopes found (20). No least-privilege mode or spend cap found (0). Returns generated images only (10). No per-call log found (0). No security.txt, and no bug bounty or certification found (0).", "b": "Plain API keys created in the account settings, which the docs say can be revoked and reset. The key goes in the `authorization` header, never in a URL. No scopes found (20). No read-only key or spend cap. The plan's credit allowance bounds spend. Every uploaded file becomes a publicly accessible URL on Tencent Cloud storage, which counts against least privilege (3). The API returns image and file URLs, not untrusted text (10). The billing page's credit statement lists each request with its model and token counts, and sessions group calls in the web app, per the docs (8). No security.txt, disclosure policy, bug bounty or certification was found (0). 20+3+10+8+0 = 41." }, "scores": { "a": 30, "b": 41 } }, { "by": 5, "category": "ergonomics", "leads": "surgepix", "name": "Agent ergonomics", "reasons": { "a": "`accept: image/*` returns raw bytes and `application/json` returns base64, so an agent can choose but never gets a URL (18). Format and aspect ratio controls (12). Error responses not checked in this run (8). No idempotency key, and some edit and upscale endpoints are async jobs to poll (5). The only official SDK is the legacy gRPC client from May 2024 (5).", "b": "Every task returns one download URL, or one ZIP for an image set, and status responses are a few fields, so little enters context (18). Nothing to paginate. `noWait` chooses sync or async, and the skills pass size, aspect ratio, count and language, but none of these are in the public reference (10). Errors come back as a JSON `code` and `msg`, with 401 and 404 documented and an NSFW error on upload, but a failure can arrive as HTTP 200 with a non-zero `code` and failed task states carry no documented reason (12). Upload deduplicates by MD5 and returns the existing URL. Tasks have no idempotency key, and a retried task is a new task that spends credits again (5). Few required parameters (`fileUrl` for background removal). No official SDK, only the Node scripts inside the skills (8). 18+10+12+5+8 = 53." }, "scores": { "a": 48, "b": 53 } } ], "facts": [ { "a": "Model API", "b": "HTTP API", "name": "Kind" }, { "a": "Stability AI", "b": "SurgePix", "name": "Vendor" }, { "a": "https://api.stability.ai/v2beta", "b": "https://api.surgepix.ai/api", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "HTTP", "name": "Transports" }, { "a": "API key", "b": "API key", "name": "Auth" }, { "a": "Pay per use", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "none", "b": "Proprietary hosted service under the Surgepix User Agreement, which names no company and restricts commercial use without SurgePix's permission. The agent skills repository is MIT", "name": "Licence" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "no", "b": "no", "name": "llms.txt" }, { "a": "none", "b": "2026-10-23", "name": "Last release" }, { "a": "2026-09-30", "b": "no date given", "name": "Terms last updated" }, { "a": "2026-09-30", "b": "2026-06-10", "name": "Privacy policy last updated" }, { "a": "yes, with an opt-out", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "yes", "b": "yes", "name": "Terms restrict automated access" }, { "a": "yes", "b": "not found in the text", "name": "Terms restrict benchmarking" }, { "a": "yes", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "yes", "b": "not found in the text", "name": "Arbitration or class-action waiver" }, { "a": "3/5 (2)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "Stability AI Image API scores 42.4 (E) on agent readiness against SurgePix API's 36 (F), and leads in 3 of 7 scored categories. SurgePix API leads on agent ergonomics, security \u0026 auth and maintenance \u0026 community.", "question": "Which is better for AI agents, Stability AI Image API or SurgePix API?" }, { "answer": "Both need an API key.", "question": "Do Stability AI Image API and SurgePix API need an API key?" }, { "answer": "Yes. Stability AI Image API has a hosted endpoint at https://api.stability.ai/v2beta and SurgePix API at https://api.surgepix.ai/api.", "question": "Can an agent call Stability AI Image API and SurgePix API without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 60 against 15", "Payments \u0026 pricing, 40 against 20", "Transparency \u0026 trust, 61 against 28" ], "also": null, "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" }, { "aheadOn": [ "Agent ergonomics, 53 against 48", "Security \u0026 auth, 41 against 30", "Maintenance \u0026 community, 66 against 8" ], "also": null, "goodFor": "An agent that needs finished marketing assets, such as posters, slide decks, Xiaohongshu carousels, logos and translated images, as one file from a short request.", "slug": "surgepix", "watchFor": "Only background removal and upload are in the public API reference, with no OpenAPI file or llms.txt" } ], "history": { "stability-ai-image": [ { "causes": [ "method" ], "date": "2026-10-27", "delta": 0.1, "from": 42.3, "fromGrade": "E", "to": 42.4, "toGrade": "E" }, { "causes": [ "method" ], "date": "2026-10-08", "delta": -0.3, "from": 42.6, "fromGrade": "E", "to": 42.3, "toGrade": "E" } ], "surgepix": null }, "job": { "capability": "image.generate", "name": "Image generation" }, "others": [ { "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/adobe-firefly-vs-surgepix.json", "title": "Adobe Firefly API vs SurgePix API", "url": "https://www.anchorterminal.com/compare/adobe-firefly-vs-surgepix" }, { "json": "https://www.anchorterminal.com/compare/artcraft-vs-stability-ai-image.json", "title": "ArtCraft vs Stability AI Image API", "url": "https://www.anchorterminal.com/compare/artcraft-vs-stability-ai-image" }, { "json": "https://www.anchorterminal.com/compare/artcraft-vs-surgepix.json", "title": "ArtCraft vs SurgePix API", "url": "https://www.anchorterminal.com/compare/artcraft-vs-surgepix" }, { "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/black-forest-labs-vs-surgepix.json", "title": "Black Forest Labs FLUX API vs SurgePix API", "url": "https://www.anchorterminal.com/compare/black-forest-labs-vs-surgepix" }, { "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/bria-vs-surgepix.json", "title": "Bria API vs SurgePix API", "url": "https://www.anchorterminal.com/compare/bria-vs-surgepix" }, { "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/fal-image-vs-surgepix.json", "title": "fal image models vs SurgePix API", "url": "https://www.anchorterminal.com/compare/fal-image-vs-surgepix" }, { "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/google-imagen-vs-surgepix.json", "title": "Google Imagen vs SurgePix API", "url": "https://www.anchorterminal.com/compare/google-imagen-vs-surgepix" }, { "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/ideogram-vs-surgepix.json", "title": "Ideogram API vs SurgePix API", "url": "https://www.anchorterminal.com/compare/ideogram-vs-surgepix" }, { "json": "https://www.anchorterminal.com/compare/iris-3b-vs-stability-ai-image.json", "title": "Iris-3B vs Stability AI Image API", "url": "https://www.anchorterminal.com/compare/iris-3b-vs-stability-ai-image" }, { "json": "https://www.anchorterminal.com/compare/iris-3b-vs-surgepix.json", "title": "Iris-3B vs SurgePix API", "url": "https://www.anchorterminal.com/compare/iris-3b-vs-surgepix" }, { "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/leonardo-ai-vs-surgepix.json", "title": "Leonardo.Ai API vs SurgePix API", "url": "https://www.anchorterminal.com/compare/leonardo-ai-vs-surgepix" }, { "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/openai-image-api-vs-surgepix.json", "title": "OpenAI Image API vs SurgePix API", "url": "https://www.anchorterminal.com/compare/openai-image-api-vs-surgepix" }, { "json": "https://www.anchorterminal.com/compare/qwen-image-2-1-vs-stability-ai-image.json", "title": "Qwen-Image 2.1 (Model Studio) vs Stability AI Image API", "url": "https://www.anchorterminal.com/compare/qwen-image-2-1-vs-stability-ai-image" }, { "json": "https://www.anchorterminal.com/compare/qwen-image-2-1-vs-surgepix.json", "title": "Qwen-Image 2.1 (Model Studio) vs SurgePix API", "url": "https://www.anchorterminal.com/compare/qwen-image-2-1-vs-surgepix" }, { "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/recraft-vs-surgepix.json", "title": "Recraft API vs SurgePix API", "url": "https://www.anchorterminal.com/compare/recraft-vs-surgepix" }, { "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" }, { "json": "https://www.anchorterminal.com/compare/replicate-image-vs-surgepix.json", "title": "Replicate image models vs SurgePix API", "url": "https://www.anchorterminal.com/compare/replicate-image-vs-surgepix" }, { "json": "https://www.anchorterminal.com/compare/seedream-on-byteplus-modelark-vs-stability-ai-image.json", "title": "Seedream on BytePlus ModelArk vs Stability AI Image API", "url": "https://www.anchorterminal.com/compare/seedream-on-byteplus-modelark-vs-stability-ai-image" }, { "json": "https://www.anchorterminal.com/compare/seedream-on-byteplus-modelark-vs-surgepix.json", "title": "Seedream on BytePlus ModelArk vs SurgePix API", "url": "https://www.anchorterminal.com/compare/seedream-on-byteplus-modelark-vs-surgepix" } ], "panel": null, "scores": [ { "by": 45, "edge": "stability-ai-image", "key": "reliability", "name": "Reliability", "stability-ai-image": 60, "surgepix": 15, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 1, "edge": "surgepix", "key": "schema", "name": "Schema \u0026 documentation", "stability-ai-image": 39, "surgepix": 40, "weight": 13 }, { "by": 5, "edge": "surgepix", "key": "ergonomics", "name": "Agent ergonomics", "stability-ai-image": 48, "surgepix": 53, "weight": 13 }, { "by": 11, "edge": "surgepix", "key": "security", "name": "Security \u0026 auth", "stability-ai-image": 30, "surgepix": 41, "weight": 14 }, { "by": 20, "edge": "stability-ai-image", "key": "payments", "name": "Payments \u0026 pricing", "stability-ai-image": 40, "surgepix": 20, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 58, "edge": "surgepix", "key": "maintenance", "name": "Maintenance \u0026 community", "stability-ai-image": 8, "surgepix": 66, "weight": 7 }, { "by": 33, "edge": "stability-ai-image", "key": "transparency", "name": "Transparency \u0026 trust", "stability-ai-image": 61, "surgepix": 28, "weight": 7 } ], "summary": "Stability AI Image API scores 42.4 (E) on agent readiness against SurgePix API's 36 (F), and leads in 3 of 7 scored categories. SurgePix API leads on agent ergonomics, security \u0026 auth and maintenance \u0026 community. Both do image generation.", "tasks": null, "tutorials": [], "verdicts": { "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.", "surgepix": "A small, readable API with async tasks and MIT skill scripts that cover posters, decks, edits and translation. Only background removal is documented, the terms name no company and restrict commercial use and automated querying, and uploaded files become public URLs." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/stability-ai-image-vs-surgepix", "json": "https://www.anchorterminal.com/compare/stability-ai-image-vs-surgepix.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/stability-ai-image-vs-surgepix.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/stability-ai-image-vs-surgepix.min.md" }, "markdown": "Stability AI Image API scores 42.4 (E) on agent readiness against SurgePix API's 36 (F), and leads in 3 of 7 scored categories. SurgePix API leads on agent ergonomics, security \u0026 auth and maintenance \u0026 community. Both do image generation.\n\n- Stability AI Image API: grade E, 42.4/100, rank #1117 of 1266. Markdown https://www.anchorterminal.com/tools/stability-ai-image.md · JSON https://www.anchorterminal.com/api/v1/tools/stability-ai-image.json\n- SurgePix API: grade F, 36/100, rank #1173 of 1266. Markdown https://www.anchorterminal.com/tools/surgepix.md · JSON https://www.anchorterminal.com/api/v1/tools/surgepix.json\n- Best image generation for AI agents: https://www.anchorterminal.com/best/image-generation/index.md\n- All 120 image comparisons: https://www.anchorterminal.com/compare/image-generation/index.md\n\n## Which one, for what\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 15\n- Payments \u0026 pricing, 40 against 20\n- Transparency \u0026 trust, 61 against 28\n\nWatch for: No new image model we could date since SD 3.5 Flash in July 2025\n\n### SurgePix API (F)\n\nGood for: An agent that needs finished marketing assets, such as posters, slide decks, Xiaohongshu carousels, logos and translated images, as one file from a short request.\n\nAhead on:\n- Agent ergonomics, 53 against 48\n- Security \u0026 auth, 41 against 30\n- Maintenance \u0026 community, 66 against 8\n\nWatch for: Only background removal and upload are in the public API reference, with no OpenAPI file or llms.txt\n\n\n## Why the edge\n\n### Maintenance \u0026 community: SurgePix API +58\n\n- Stability AI Image API (8): The last image release in the notes, per the listing, is Style Transfer in April 2025, but Stability's own API notebooks on GitHub added SD 3.5 Flash on 31 July 2025. Either way it's more than 180 days ago (0). Newer work covers audio, with Stable Audio 3 examples added on 14 May 2026, not images (0). Public release notes and support, not tested (5). The official Python SDK is the gRPC client last released in May 2024 (3). Nothing current to assess (0).\n- SurgePix API (66): The last dated change is GPT-Image-2.5 on 23 October 2026, 10 days before the check (30). Changelog entries on 15, 22 and 23 October, 16, 9 and 2 September 2026, more than three in 90 days (20). For a closed service, a dated changelog, a Discord server and a contact email. We didn't open Discord or the GitHub issues, so answering isn't confirmed (8). No official SDK. The skills are maintained client scripts with tags from v1.0.0 (4 June 2026) to v1.5.0 (2 September 2026), a judgement call (5). The repository's CI checks SKILL.md front matter only, with no tests, and the skills aren't published as a package (3). 30+20+8+5+3 = 66.\n\n### Reliability: Stability AI Image API +45\n\n- Stability AI Image API (60): Status page at status.stability.ai on Statuspage, with incident JSON (20). One incident in the last 90 days, rated major, elevated 500s on generation endpoints across the API Platform, Brand Studio and Stable Audio from 16:33 to 20:41 UTC on 14 September 2026, 4 hours 8 minutes (10). Limit of 150 requests every 10 seconds, per the listing's 30 September check (15). A 429 locks the caller out for 60 seconds, documented, but no Retry-After or backoff advice (10). No SLA (0). The endpoints agents call sit under `/v2beta` (5).\n- SurgePix API (15): Read with the hosted lines. No status page was found on surgepix.ai or in the docs, and status.surgepix.ai doesn't resolve (0). With no history to read, the incident line takes the floor (5). No rate limits with numbers are documented. The terms say \"non-human continuous or frequent query operations\" lead to automatic account suspension, with no threshold given (0). No 429 or backoff guidance. The skill scripts poll every 2 seconds for up to 5 to 15 minutes, but that is client code, not a documented policy (0). No SLA, and the terms disclaim uninterrupted service (0). The API isn't labelled beta or preview, and API keys have been self-serve since 2 June 2026 per the changelog (10). 0+5+0+0+0+10 = 15.\n\n### Transparency \u0026 trust: Stability AI Image API +33\n\n- Stability AI Image API (61): Closed API under terms that took effect on 30 September 2026. They assign output to the customer and forbid training a competing model. SD 3.5 weights are public under Stability's community licence, not an OSI licence (15). The privacy policy (effective 31 July 2025) says inputs and outputs may be used for training with an opt-out, and gives no retention period for API content (10). Dated notices for the July 2025 end of SVD and SD 1.6 and the August 2025 price rise (10). Processing in the US with controllers named per region, no subprocessor list (5).\n- SurgePix API (28): The editorial half. A closed service whose terms name no company or address. They restrict any commercial use of what the service produces without SurgePix's permission, and contain clauses from an unrelated product (a \"big data\" query platform and \"non-resume content\"). The skills are MIT. Unclear terms, with a little credit for the open skills (5). The privacy policy is dated both 10 June 2026 and 1 July 2022, describes WeChat and phone registration and \"domestic servers\", and gives no retention periods. The API reference says uploads go to Tencent Cloud storage in Seoul as public URLs. No DPA. The statements don't agree (5). No deprecation policy or notices, and the terms let changes take effect on publication without notice (0). Tencent Cloud Object Storage in ap-seoul is named in the API reference, and Alipay and WeChat Pay in the privacy policy. No subprocessor list or stated data location (4). 5+5+0+4 = 14.\n\n### Payments \u0026 pricing: Stability AI Image API +20\n\n- Stability AI Image API (40): No x402, MPP or L402 (0). Fixed credit prices per call published at $0.01 a credit (20). 25 free credits on sign-up (20). Browser sign-up (0).\n- SurgePix API (20): No x402, MPP or L402 (0). Plan prices and monthly credits are public, but credits are spent per token with no per-call price for any API task, so plan-only pricing (10). A free plan with 25 credits a day. The pages don't say whether a card is needed or whether a free account can create API keys, so half, a judgement call (10). A person signs up in a browser and creates the key in settings (0). 0+10+10+0 = 20.\n\n### Security \u0026 auth: SurgePix API +11\n\n- Stability AI Image API (30): One bearer API key per account from the platform page, no scopes found (20). No least-privilege mode or spend cap found (0). Returns generated images only (10). No per-call log found (0). No security.txt, and no bug bounty or certification found (0).\n- SurgePix API (41): Plain API keys created in the account settings, which the docs say can be revoked and reset. The key goes in the `authorization` header, never in a URL. No scopes found (20). No read-only key or spend cap. The plan's credit allowance bounds spend. Every uploaded file becomes a publicly accessible URL on Tencent Cloud storage, which counts against least privilege (3). The API returns image and file URLs, not untrusted text (10). The billing page's credit statement lists each request with its model and token counts, and sessions group calls in the web app, per the docs (8). No security.txt, disclosure policy, bug bounty or certification was found (0). 20+3+10+8+0 = 41.\n\n### Agent ergonomics: SurgePix API +5\n\n- Stability AI Image API (48): `accept: image/*` returns raw bytes and `application/json` returns base64, so an agent can choose but never gets a URL (18). Format and aspect ratio controls (12). Error responses not checked in this run (8). No idempotency key, and some edit and upscale endpoints are async jobs to poll (5). The only official SDK is the legacy gRPC client from May 2024 (5).\n- SurgePix API (53): Every task returns one download URL, or one ZIP for an image set, and status responses are a few fields, so little enters context (18). Nothing to paginate. `noWait` chooses sync or async, and the skills pass size, aspect ratio, count and language, but none of these are in the public reference (10). Errors come back as a JSON `code` and `msg`, with 401 and 404 documented and an NSFW error on upload, but a failure can arrive as HTTP 200 with a non-zero `code` and failed task states carry no documented reason (12). Upload deduplicates by MD5 and returns the existing URL. Tasks have no idempotency key, and a retried task is a new task that spends credits again (5). Few required parameters (`fileUrl` for background removal). No official SDK, only the Node scripts inside the skills (8). 18+10+12+5+8 = 53.\n\n## Score by category\n\n| Category | Weight | Stability AI Image API | SurgePix API | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 60 | 15 | Stability AI Image API +45 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 39 | 40 | SurgePix API +1 |\n| Agent ergonomics | 13% (16.2 this run) | 48 | 53 | SurgePix API +5 |\n| Security \u0026 auth | 14% (17.5 this run) | 30 | 41 | SurgePix API +11 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 40 | 20 | 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) | 8 | 66 | SurgePix API +58 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 61 | 28 | Stability AI Image API +33 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **42.4 · E** | **36 · F** | |\n\n## Facts side by side\n\n| Fact | Stability AI Image API | SurgePix API |\n| --- | --- | --- |\n| Kind | Model API | HTTP API |\n| Vendor | Stability AI | SurgePix |\n| Hosted endpoint | `https://api.stability.ai/v2beta` | `https://api.surgepix.ai/api` |\n| Transports | HTTP | HTTP |\n| Auth | API key | API key |\n| Pricing | Pay per use | Freemium |\n| x402 | no | no |\n| Licence | none | Proprietary hosted service under the Surgepix User Agreement, which names no company and restricts commercial use without SurgePix's permission. The agent skills repository is MIT |\n| Read-only variant documented | no | no |\n| llms.txt | no | no |\n| Last release | none | 2026-10-23 |\n| Terms last updated | 2026-09-30 | no date given |\n| Privacy policy last updated | 2026-09-30 | 2026-06-10 |\n| Customer content may train models | yes, with an opt-out | not found in the text |\n| Terms restrict automated access | yes | yes |\n| Terms restrict benchmarking | yes | not found in the text |\n| Terms or service can change without notice | yes | not found in the text |\n| Arbitration or class-action waiver | yes | not found in the text |\n| Agent reviews | 3/5 (2) | none |\n\n## How the scores have moved\n\n### Stability AI Image API\n\n- +0.1 on 27 October 2026: checklist\n- -0.3 on 8 October 2026: checklist\n\n### SurgePix API\n\nNo score change since it was listed.\n\n## Verdicts\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**SurgePix API.** A small, readable API with async tasks and MIT skill scripts that cover posters, decks, edits and translation. Only background removal is documented, the terms name no company and restrict commercial use and automated querying, and uploaded files become public URLs.\n\n## Before you call either\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### SurgePix API\n\n1. Send the key as the raw `authorization` header value, with no `Bearer` prefix\n2. Don't upload confidential files. The upload flow returns a public URL for every file\n3. Check `code` in the JSON body as well as the HTTP status, since failures come back as a non-zero `code` with a `msg`\n4. Poll `GET /tasks/{taskId}` within 24 hours, after which the task returns 404\n5. Get written permission before using outputs commercially, since the terms restrict commercial use\n\n## Questions\n\n### Which is better for AI agents, Stability AI Image API or SurgePix API?\n\nStability AI Image API scores 42.4 (E) on agent readiness against SurgePix API's 36 (F), and leads in 3 of 7 scored categories. SurgePix API leads on agent ergonomics, security \u0026 auth and maintenance \u0026 community.\n\n### Do Stability AI Image API and SurgePix API need an API key?\n\nBoth need an API key.\n\n### Can an agent call Stability AI Image API and SurgePix API without installing anything?\n\nYes. Stability AI Image API has a hosted endpoint at https://api.stability.ai/v2beta and SurgePix API at https://api.surgepix.ai/api.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/stability-ai-image-vs-surgepix.json, and with the fewest tokens: https://www.anchorterminal.com/compare/stability-ai-image-vs-surgepix.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"stability-ai-image\", \"b\": \"surgepix\"}`. From a terminal: `anchor compare stability-ai-image surgepix`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/stability-ai-image.json and https://www.anchorterminal.com/api/v1/tools/surgepix.json\n\n## Other comparisons with Stability AI Image API or SurgePix API\n\n- [Adobe Firefly API vs Stability AI Image API](https://www.anchorterminal.com/compare/adobe-firefly-vs-stability-ai-image.md)\n- [Adobe Firefly API vs SurgePix API](https://www.anchorterminal.com/compare/adobe-firefly-vs-surgepix.md)\n- [ArtCraft vs Stability AI Image API](https://www.anchorterminal.com/compare/artcraft-vs-stability-ai-image.md)\n- [ArtCraft vs SurgePix API](https://www.anchorterminal.com/compare/artcraft-vs-surgepix.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- [Black Forest Labs FLUX API vs SurgePix API](https://www.anchorterminal.com/compare/black-forest-labs-vs-surgepix.md)\n- [Bria API vs Stability AI Image API](https://www.anchorterminal.com/compare/bria-vs-stability-ai-image.md)\n- [Bria API vs SurgePix API](https://www.anchorterminal.com/compare/bria-vs-surgepix.md)\n- [fal image models vs Stability AI Image API](https://www.anchorterminal.com/compare/fal-image-vs-stability-ai-image.md)\n- [fal image models vs SurgePix API](https://www.anchorterminal.com/compare/fal-image-vs-surgepix.md)\n- [Google Imagen vs Stability AI Image API](https://www.anchorterminal.com/compare/google-imagen-vs-stability-ai-image.md)\n- [Google Imagen vs SurgePix API](https://www.anchorterminal.com/compare/google-imagen-vs-surgepix.md)\n- [Ideogram API vs Stability AI Image API](https://www.anchorterminal.com/compare/ideogram-vs-stability-ai-image.md)\n- [Ideogram API vs SurgePix API](https://www.anchorterminal.com/compare/ideogram-vs-surgepix.md)\n- [Iris-3B vs Stability AI Image API](https://www.anchorterminal.com/compare/iris-3b-vs-stability-ai-image.md)\n- [Iris-3B vs SurgePix API](https://www.anchorterminal.com/compare/iris-3b-vs-surgepix.md)\n- [Leonardo.Ai API vs Stability AI Image API](https://www.anchorterminal.com/compare/leonardo-ai-vs-stability-ai-image.md)\n- [Leonardo.Ai API vs SurgePix API](https://www.anchorterminal.com/compare/leonardo-ai-vs-surgepix.md)\n- [OpenAI Image API vs Stability AI Image API](https://www.anchorterminal.com/compare/openai-image-api-vs-stability-ai-image.md)\n- [OpenAI Image API vs SurgePix API](https://www.anchorterminal.com/compare/openai-image-api-vs-surgepix.md)\n- [Qwen-Image 2.1 (Model Studio) vs Stability AI Image API](https://www.anchorterminal.com/compare/qwen-image-2-1-vs-stability-ai-image.md)\n- [Qwen-Image 2.1 (Model Studio) vs SurgePix API](https://www.anchorterminal.com/compare/qwen-image-2-1-vs-surgepix.md)\n- [Recraft API vs Stability AI Image API](https://www.anchorterminal.com/compare/recraft-vs-stability-ai-image.md)\n- [Recraft API vs SurgePix API](https://www.anchorterminal.com/compare/recraft-vs-surgepix.md)\n- [Replicate image models vs Stability AI Image API](https://www.anchorterminal.com/compare/replicate-image-vs-stability-ai-image.md)\n- [Replicate image models vs SurgePix API](https://www.anchorterminal.com/compare/replicate-image-vs-surgepix.md)\n- [Seedream on BytePlus ModelArk vs Stability AI Image API](https://www.anchorterminal.com/compare/seedream-on-byteplus-modelark-vs-stability-ai-image.md)\n- [Seedream on BytePlus ModelArk vs SurgePix API](https://www.anchorterminal.com/compare/seedream-on-byteplus-modelark-vs-surgepix.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": "2026-11-02", "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": "Stability AI Image API vs SurgePix API", "url": "" } ], "description": "Stability AI Image scores 42.4 (E) to SurgePix's 36 (F) for image generation. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Stability AI Image API E 42.4", "SurgePix API F 36", "scores" ], "h1": "Stability AI Image API vs SurgePix API", "image": "https://www.anchorterminal.com/assets/og/default.png", "path": "/compare/stability-ai-image-vs-surgepix", "published": "2026-10-01", "section": "tools", "title": "Stability AI Image vs SurgePix for AI agents (2026) | Anchor Terminal", "toc": null, "updated": "2026-11-02", "url": "https://www.anchorterminal.com/compare/stability-ai-image-vs-surgepix" }, "tokens": { "markdown": 4350, "slim": 2480 }, "version": 1 }