{ "data": { "a": { "slug": "nace-drex", "name": "Drex 1.5", "vendor": "Nace AI, Inc. (Nace.AI)", "vendorUrl": "https://www.nace.ai", "kind": "model", "category": "decision-models", "summary": "Drex 1.5 is Nace.AI's decision model. It returns a probability for each option in typed yes or no, choice and score questions. Hosted at console.nace.ai, with open weights under the Nace AI Open RAIL-M licence.", "url": "https://www.anchorterminal.com/tools/nace-drex", "markdownUrl": "https://www.anchorterminal.com/tools/nace-drex.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/nace-drex.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/nace-drex.json", "repo": "https://huggingface.co/nace-ai/drex-v1.5", "license": "Hosted API under the Nace AI Terms of Service, last updated 5 May 2026. Weights under the Nace AI Open RAIL-M licence (modified, version 1.0, October 2026), which is not an open-source licence. Businesses above $1 million in revenue or funding need a separate commercial licence, and competing products are excluded. The bundled code/kev package, derived from Jared Palmer's Kev (https://github.com/jaredpalmer/kev), and the GitHub repository are Apache-2.0, and the agent skill is MIT.", "transports": [ "http" ], "remoteUrl": "https://console.nace.ai/v1/systemone", "packages": [ { "registry": "pypi", "name": "nace-sdk" }, { "registry": "npm", "name": "nace-sdk" }, { "registry": "pypi", "name": "nace-mcp" } ], "auth": "api-key", "authNotes": "A key starting nace_sk_, created in the Console dashboard after an emailed-code sign-in and sent as a Bearer header. The key is shown once. An account can hold three active keys, which share its credit and rate limits. Keys can be revoked and rotated, and no scopes are documented. An agent cannot create its own account, because sign-in needs an emailed code.", "pricing": "freemium", "pricingNotes": "drex-v1.5 costs $0.05 per million input tokens, and output tokens are not billed. The price is on the public pricing reference without a login. New accounts get $25 of signup credit, which expires three months after sign-up, and a $5 monthly credit. Each mailbox gets the signup credit once, and disposable domains get none. Without a saved card, requests stop at zero credit with 402 insufficient_credit. A saved card turns on pay-as-you-go, billed every 14 days.", "priceSummary": "Freemium", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the pricing reference, the API reference or the OpenAPI document (checked 10 October 2026).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": 318, "pypiWeekly": 156, "asOf": "2026-10-10" }, "docsUrl": "https://console.nace.ai/docs/drex", "llmsTxt": "https://drex.nace.ai/llms.txt", "openapi": "https://console.nace.ai/openapi.json", "capabilities": [ "inference.decision" ], "tags": [ "hosted", "model", "open-weights", "llms-txt", "openapi", "python", "typescript", "mcp", "free-tier", "usage-priced", "status-page" ], "lastRelease": "2026-09-28", "graded": true, "anchor": { "graded": true, "score": 69.7, "grade": "B", "agentReady": false, "rank": 172, "ranked": true, "rankOf": 954, "categoryRank": 2, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 85, "maintenance": 65, "payments": 40, "reliability": 80, "schema": 88, "security": 65, "transparency": 63 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-10" }, "negative": -2, "negativeNotes": [ "10 October 2026, read against the public board generated 28 September 2026. The site at www.nace.ai/drex states a Decision Index 0.2.1 score of 58.28 and says Drex 1.5 leads all 71 entries under 10B parameters. The 0.2.1 board has 70 entries, none of them Drex, and its top score is Surogate Rune 26B-A4B v3 at 57.44 (https://huggingface.co/spaces/multimodalart/jev-decision-index/resolve/main/data/index-v0.2.1.json). The Hugging Face card does say the Drex figure is Nace's own run, but the site does not. Deducted 2 as a misleading claim." ], "verdict": "The hosted endpoint has a public OpenAPI document, published limits and pinned model versions, at $0.05 per million input tokens with no output charge. The #1 under 10B claim rests on Nace's own run, since Drex is absent from both public boards. Weights carry Open RAIL-M, which requires a commercial licence above $1 million in revenue or funding.", "bestFor": "Routing, triage and yes or no gates inside an agent, where the caller supplies the options and acts on the probabilities. Suited to hosted use at a low per-token price, or to open weights where the licence fits.", "strengths": [ "Public OpenAPI 3.1 document for POST /v1/systemone, plus llms.txt. Request limits are 512 questions, a 1,048,576-byte body and a 131,072-token state.", "Price per input token on the pricing reference, readable without a login. drex-v1.5 costs $0.05 per million, and output tokens are not billed.", "Rate limits with numbers for the free tier (120 requests a minute) and the paid tier (600), and Retry-After on 429 and 529 responses.", "Pinned model ids (drex-v1.0, drex-v1.5) that stay on their version, with a dated record of the drex-latest alias moves.", "Official Python and TypeScript SDKs (nace-sdk), an MCP server (nace-mcp) with 21 tools, and the weights on Hugging Face." ], "weaknesses": [ "The rank 1 claim comes from Nace's own run on Decision Index 0.3.1, and Drex is not on the public board for 0.3 or 0.2.1.", "The weights are under Open RAIL-M, which restricts commercial use above $1 million in revenue or funding and excludes competing products.", "The data statements conflict. The developer page says no training on your data, while the privacy notice allows input and output to improve the Services.", "No SLA, changelog or readable incident list for the model. Drex has been public for 12 days.", "Sign-up needs an emailed code and a browser step. The $25 signup credit is granted once per mailbox and expires after three months." ], "agentNotes": [ "Call https://console.nace.ai/v1/systemone with Authorization: Bearer nace_sk_..., and pin model drex-v1.5 rather than drex-latest in production.", "Stop on 402 insufficient_credit or 402 payment_required until credit is topped up or the unpaid invoice is paid.", "Retry 429 and 529 after retry-after-ms. On a 422 for an unknown model, use one of the ids the error message lists.", "Keep state below 131,072 tokens and the body below 1,048,576 bytes, and send at most 512 questions per request.", "Keep the key on a server. A key in browser code is exposed, and the /v1 routes send no Access-Control-Allow-Origin header.", "Check usage.input_tokens and the usage CSV after retries, since /v1/systemone documents no idempotency key." ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 69.7 } ], "editorialScores": { "ergonomics": 85, "maintenance": 65, "payments": 40, "reliability": 80, "schema": 88, "security": 65, "transparency": 50 }, "provenanceScore": 75 }, "connect": { "install": "pip install nace-sdk # or: npm install nace-sdk", "http": "curl https://console.nace.ai/v1/systemone \\\n -H \"Authorization: Bearer $NACE_API_KEY\" \\\n -H \"Content-Type: application/json\" \\\n -d '{\"model\":\"drex-v1.5\",\"state\":\"I was charged twice for order A-104.\",\"questions\":{\"refund\":{\"type\":\"noul\",\"instructions\":\"Does the customer ask for a refund?\"}}}'", "claudeCode": "uvx nace-mcp login\nclaude mcp add nace -- uvx nace-mcp" }, "letme": { "capability": "https://letme.dev/inference.decision", "tool": "https://letme.dev/nace-drex" }, "area": "models", "unitPrices": [ { "item": "Drex 1.5 input", "unit": "1m-tokens", "usd": 0.05, "note": "Per input token, as reported in usage.input_tokens. The pinned drex-v1.0 costs $0.04." }, { "item": "Drex 1.5 output", "unit": "1m-tokens", "usd": 0, "note": "Reported in usage.output_tokens and not billed." } ], "provenance": { "legalEntity": "Nace AI, Inc.", "domain": "nace.ai", "domainRegistered": "", "endpointOnVendorDomain": true, "terms": "https://www.nace.ai/policies/terms-of-service", "privacy": "https://www.nace.ai/policies/privacy-policy", "statusPage": "https://status.nace.ai/", "changelog": "", "securityTxt": "valid", "checked": "2026-10-10", "notes": [ "The Terms were last updated 5 May 2026, before Drex was released, and no Drex-specific service terms were found.", "The security.txt expires on 9 October 2027. The console changelog URL returned 500 and nace.ai/changelog returned 404.", "The Hugging Face cardData field marks the repository as private, while the Hub API returns it as public and the files download without an account." ], "score": 75 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/nace-drex.json", "live": { "slug": "nace-drex", "probe": { "target": "https://console.nace.ai/v1/systemone", "method": "get", "lastAt": "2026-10-10T13:02:21.179574177Z", "lastOk": true, "lastStatus": 405, "lastMs": 294, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 208, "p95ms24h": 294, "samples24h": 21, "samples30d": 21, "days": [ { "date": "2026-10-10", "probes": 21, "ok": 21 } ] }, "vendorStatus": { "page": "https://status.nace.ai", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-10T11:53:13.006193955Z" }, "updatedAt": "2026-10-10T13:02:21.179574177Z" } }, "answer": "OpenAI Decisions API scores 71.5 (BB) on agent readiness against Drex 1.5's 69.7 (B), and leads in 5 of 7 scored categories. Drex 1.5 leads on reliability and payments \u0026 pricing.", "b": { "slug": "openai-decisions-api", "name": "OpenAI Decisions API", "vendor": "OpenAI", "vendorUrl": "https://developers.openai.com", "kind": "model", "category": "decision-models", "summary": "The Decisions API is an OpenAI endpoint, in public beta since 6 October 2026, that reads text and images and returns typed answers with probabilities, a predicate, a choice from a fixed set or a rubric score.", "url": "https://www.anchorterminal.com/tools/openai-decisions-api", "markdownUrl": "https://www.anchorterminal.com/tools/openai-decisions-api.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/openai-decisions-api.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/openai-decisions-api.json", "repo": "https://github.com/openai/openai-python", "license": "Proprietary service under OpenAI's services agreement. The official SDKs are Apache-2.0", "transports": [ "http" ], "remoteUrl": "https://api.openai.com/v1/decisions", "packages": [ { "registry": "pypi", "name": "openai" }, { "registry": "npm", "name": "openai" } ], "auth": "api-key", "authNotes": "`Authorization: Bearer` with an ordinary OpenAI project key, self-serve from the platform dashboard after sign-up. No waitlist or separate approval for the beta was found. Keys carry their own permissions under the access-control guide (https://developers.openai.com/api/docs/guides/rbac). We didn't confirm that a key can be restricted to `/v1/decisions` alone.", "pricing": "usage", "pricingNotes": "$0.10 per million input tokens on `gpt-6-luna`, with no output, cache-read or cache-write charge (https://developers.openai.com/api/docs/guides/decisions). Long-context input multipliers and regional processing premiums apply, which on GPT-6 Luna are 2x input over 272,000 tokens and 10 per cent. No sandbox. The rate-limits guide lists a Free tier capped at $100 a month, but GPT-6 Luna's limits start at the Build tier, reached with $5 of credit (https://developers.openai.com/api/docs/guides/rate-limits).", "priceSummary": "Pay per use", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the Decisions guide, the API reference or the pricing page (checked 2026-10-08).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 31774, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-08" }, "docsUrl": "https://developers.openai.com/api/docs/guides/decisions", "llmsTxt": "https://developers.openai.com/llms.txt", "openapi": "https://github.com/openai/openai-openapi", "capabilities": [ "inference.decision" ], "tags": [ "official", "hosted", "model", "closed-source", "openapi", "llms-txt", "python", "typescript", "go", "java", "usage-priced", "status-page", "beta" ], "lastRelease": "2026-10-06", "graded": true, "anchor": { "graded": true, "score": 71.5, "grade": "BB", "agentReady": true, "rank": 123, "ranked": true, "rankOf": 954, "categoryRank": 1, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 87, "maintenance": 77, "payments": 30, "reliability": 53, "schema": 89, "security": 83, "transparency": 83 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-08" }, "negative": 0, "verdict": "Typed predicate, choice and score answers with probabilities, up to 200 questions a call, at $0.10 per million input tokens with no output charge. It is a public beta released on 6 October 2026, with one model alias, no dated snapshot, no Batch route and no SLA found.", "bestFor": "High-volume yes or no checks, routing among fixed options and rubric scoring over text and images, for teams already on an OpenAI key.", "strengths": [ "Three typed question kinds, predicate, choice and score, with per-option probabilities and up to 200 questions about one input in a call", "$0.10 per million input tokens on `gpt-6-luna`, with no output, cache-read or cache-write charge", "Text and up to 128 inline images in one request", "The official OpenAPI 3.1 document carries `POST /decisions` with typed limits, and five official SDKs support it", "Not used for training by default, eligible for Zero Data Retention and HIPAA use, per OpenAI's data-controls guide" ], "weaknesses": [ "Public beta released on 6 October 2026. The guide expects general availability in the coming weeks and gives no date", "One model alias, `gpt-6-luna`, with no dated snapshot to pin", "Images must be inline base64 data URLs. Hosted image URLs and `file_id` inputs aren't accepted", "Not among the endpoints the Batch guide lists, and no SLA covering it was found", "No guidance on adversarial or injected content was found in the guide or the reference" ], "agentNotes": [ "Put independent questions about one input in a single `questions` array. Send a separate request when a question depends on an earlier answer", "Check each answer's `type` before reading it. A question can come back as `refusal` while the others in the same request are answered", "Encode images as base64 data URLs. Hosted URLs and `file_id` inputs are rejected", "Give a `choice` question a fallback value such as `other`, and set thresholds from your own labelled examples", "Use Python SDK 3.26.0 or JavaScript 7.30.0 or later, and follow `Retry-After` on 429 and 503" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "BB", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 71.5 } ], "editorialScores": { "ergonomics": 87, "maintenance": 77, "payments": 30, "reliability": 53, "schema": 89, "security": 83, "transparency": 71 }, "provenanceScore": 94 }, "connect": { "install": "pip install openai # or: npm i openai", "http": "curl https://api.openai.com/v1/decisions \\\n -H \"Authorization: Bearer $OPENAI_API_KEY\" -H \"Content-Type: application/json\" \\\n -d '{\"model\":\"gpt-6-luna\",\"input\":\"I was charged twice for my order.\",\"questions\":[{\"type\":\"choice\",\"name\":\"department\",\"instructions\":\"Which department should handle this complaint?\",\"choices\":[{\"value\":\"billing\",\"description\":\"Payments, invoices, and refunds.\"},{\"value\":\"technical\",\"description\":\"Problems using the product.\"},{\"value\":\"other\",\"description\":\"Requests outside these categories.\"}]}]}'" }, "letme": { "capability": "https://letme.dev/inference.decision", "tool": "https://letme.dev/openai-decisions-api" }, "sameCompany": [ "openai-api", "openai-embeddings", "openai-guardrails", "openai-moderation", "openai-image-api", "openai-sora", "openai-speech-to-text", "openai-realtime", "openai-agents-sdk", "openai-codex" ], "area": "models", "unitPrices": [ { "item": "gpt-6-luna input on /v1/decisions", "unit": "1m-tokens", "usd": 0.1, "note": "No output, cache-read or cache-write charge" } ], "provenance": { "legalEntity": "OpenAI OpCo, LLC", "domain": "openai.com", "domainRegistered": "2007-01-19", "endpointOnVendorDomain": true, "terms": "https://openai.com/policies/services-agreement/", "privacy": "https://openai.com/policies/privacy-policy/", "statusPage": "https://status.openai.com", "changelog": "https://developers.openai.com/api/docs/changelog", "securityTxt": "valid", "checked": "2026-10-08", "notes": [ "Same entity, terms and privacy policy as the OpenAI API listing. openai.com answered 403 to our reader on 8 October, so the legal entity and the two policy URLs stand per that listing's check of 26 September and weren't re-read.", "RDAP gives openai.com a registration date of 2007-01-19, before OpenAI existed.", "status.openai.com lists a Decisions component under APIs, read on 8 October.", "The changelog entry for the release is dated 6 October 2026.", "openai.com/.well-known/security.txt is PGP-signed and names a Bugcrowd contact and a disclosure policy. It has no Expires field, which RFC 9116 requires." ], "score": 94 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/openai-decisions-api.json", "live": { "slug": "openai-decisions-api", "probe": { "target": "https://api.openai.com/v1/decisions", "method": "get", "lastAt": "2026-10-10T13:02:23.323862142Z", "lastOk": true, "lastStatus": 404, "lastMs": 190, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 139, "p95ms24h": 214, "samples24h": 246, "samples30d": 477, "days": [ { "date": "2026-10-08", "probes": 93, "ok": 93 }, { "date": "2026-10-09", "probes": 250, "ok": 250 }, { "date": "2026-10-10", "probes": 134, "ok": 134 } ] }, "vendorStatus": { "page": "https://status.openai.com", "indicator": "minor", "summary": "Partial System Degradation", "checkedAt": "2026-10-10T13:01:42.447158576Z" }, "versions": [ { "registry": "github", "name": "openai/openai-python", "version": "v3.27.0", "released": "2026-10-09", "seenAt": "2026-10-09T17:10:07.470652526Z" }, { "registry": "npm", "name": "openai", "version": "7.31.0", "seenAt": "2026-10-09T17:10:07.376709849Z" }, { "registry": "pypi", "name": "openai", "version": "3.27.0", "released": "2026-10-09", "seenAt": "2026-10-09T17:10:07.257051454Z" } ], "githubStars": 31787, "npmWeekly": 42616960, "pypiWeekly": 74761714, "securityTxt": { "url": "https://openai.com/.well-known/security.txt", "state": "valid", "checkedAt": "2026-10-09T15:40:33.760872599Z" }, "llmsTxt": { "url": "https://developers.openai.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-09T14:02:31.032603424Z" }, "updatedAt": "2026-10-10T13:02:23.323862142Z" } }, "facts": [ { "a": "Model API", "b": "Model API", "name": "Kind" }, { "a": "Nace AI, Inc. (Nace.AI)", "b": "OpenAI", "name": "Vendor" }, { "a": "https://console.nace.ai/v1/systemone", "b": "https://api.openai.com/v1/decisions", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "HTTP", "name": "Transports" }, { "a": "API key", "b": "API key", "name": "Auth" }, { "a": "Freemium", "b": "Pay per use", "name": "Pricing" }, { "a": "not published", "b": "$0.10 per 1M tokens", "name": "Price for decision models" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Hosted API under the Nace AI Terms of Service, last updated 5 May 2026. Weights under the Nace AI Open RAIL-M licence (modified, version 1.0, October 2026), which is not an open-source licence. Businesses above $1 million in revenue or funding need a separate commercial licence, and competing products are excluded. The bundled code/kev package, derived from Jared Palmer's Kev (https://github.com/jaredpalmer/kev), and the GitHub repository are Apache-2.0, and the agent skill is MIT.", "b": "Proprietary service under OpenAI's services agreement. The official SDKs are Apache-2.0", "name": "Licence" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "2026-09-28", "b": "2026-10-06", "name": "Last release" }, { "a": "", "b": "couldn't be read", "name": "Terms last updated" }, { "a": "", "b": "couldn't be read", "name": "Privacy policy last updated" }, { "a": "", "b": "couldn't be read", "name": "Customer content may train models" }, { "a": "", "b": "couldn't be read", "name": "Terms restrict automated access" }, { "a": "", "b": "couldn't be read", "name": "Terms restrict benchmarking" }, { "a": "", "b": "couldn't be read", "name": "Terms or service can change without notice" }, { "a": "", "b": "couldn't be read", "name": "Arbitration or class-action waiver" }, { "a": "318 npm/wk, 156 PyPI/wk", "b": "32k stars", "name": "Popularity" } ], "faq": [ { "answer": "OpenAI Decisions API scores 71.5 (BB) on agent readiness against Drex 1.5's 69.7 (B), and leads in 5 of 7 scored categories. Drex 1.5 leads on reliability and payments \u0026 pricing.", "question": "Which is better for AI agents, Drex 1.5 or OpenAI Decisions API?" }, { "answer": "Both need an API key.", "question": "Do Drex 1.5 and OpenAI Decisions API need an API key?" }, { "answer": "Yes. Drex 1.5 has a hosted endpoint at https://console.nace.ai/v1/systemone and OpenAI Decisions API at https://api.openai.com/v1/decisions.", "question": "Can an agent call Drex 1.5 and OpenAI Decisions API without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 80 against 53", "Payments \u0026 pricing, 40 against 30" ], "also": null, "goodFor": "Routing, triage and yes or no gates inside an agent, where the caller supplies the options and acts on the probabilities. Suited to hosted use at a low per-token price, or to open weights where the licence fits.", "slug": "nace-drex", "watchFor": "The rank 1 claim comes from Nace's own run on Decision Index 0.3.1, and Drex is not on the public board for 0.3 or 0.2.1." }, { "aheadOn": [ "Security \u0026 auth, 83 against 65", "Maintenance \u0026 community, 77 against 65", "Transparency \u0026 trust, 83 against 63" ], "also": [ "Agent-ready, a grade of BB or better" ], "goodFor": "High-volume yes or no checks, routing among fixed options and rubric scoring over text and images, for teams already on an OpenAI key.", "slug": "openai-decisions-api", "watchFor": "Public beta released on 6 October 2026. The guide expects general availability in the coming weeks and gives no date" } ], "job": { "capability": "inference.decision", "name": "Decision models" }, "others": [ { "json": "https://www.anchorterminal.com/compare/celeris-1-decision-vs-nace-drex.json", "title": "Celeris-1 Decision vs Drex 1.5", "url": "https://www.anchorterminal.com/compare/celeris-1-decision-vs-nace-drex" }, { "json": "https://www.anchorterminal.com/compare/celeris-1-decision-vs-openai-decisions-api.json", "title": "Celeris-1 Decision vs OpenAI Decisions API", "url": "https://www.anchorterminal.com/compare/celeris-1-decision-vs-openai-decisions-api" }, { "json": "https://www.anchorterminal.com/compare/cloudflare-clef-vs-nace-drex.json", "title": "Clef vs Drex 1.5", "url": "https://www.anchorterminal.com/compare/cloudflare-clef-vs-nace-drex" }, { "json": "https://www.anchorterminal.com/compare/cloudflare-clef-vs-openai-decisions-api.json", "title": "Clef vs OpenAI Decisions API", "url": "https://www.anchorterminal.com/compare/cloudflare-clef-vs-openai-decisions-api" }, { "json": "https://www.anchorterminal.com/compare/convai-laya-vs-nace-drex.json", "title": "Laya vs Drex 1.5", "url": "https://www.anchorterminal.com/compare/convai-laya-vs-nace-drex" }, { "json": "https://www.anchorterminal.com/compare/convai-laya-vs-openai-decisions-api.json", "title": "Laya vs OpenAI Decisions API", "url": "https://www.anchorterminal.com/compare/convai-laya-vs-openai-decisions-api" }, { "json": "https://www.anchorterminal.com/compare/decider-vs-nace-drex.json", "title": "Decider vs Drex 1.5", "url": "https://www.anchorterminal.com/compare/decider-vs-nace-drex" }, { "json": "https://www.anchorterminal.com/compare/decider-vs-openai-decisions-api.json", "title": "Decider vs OpenAI Decisions API", "url": "https://www.anchorterminal.com/compare/decider-vs-openai-decisions-api" }, { "json": "https://www.anchorterminal.com/compare/gliclass-vs-nace-drex.json", "title": "GLiClass vs Drex 1.5", "url": "https://www.anchorterminal.com/compare/gliclass-vs-nace-drex" }, { "json": "https://www.anchorterminal.com/compare/gliclass-vs-openai-decisions-api.json", "title": "GLiClass vs OpenAI Decisions API", "url": "https://www.anchorterminal.com/compare/gliclass-vs-openai-decisions-api" }, { "json": "https://www.anchorterminal.com/compare/jaredpalmer-kev-vs-nace-drex.json", "title": "Kev vs Drex 1.5", "url": "https://www.anchorterminal.com/compare/jaredpalmer-kev-vs-nace-drex" }, { "json": "https://www.anchorterminal.com/compare/jaredpalmer-kev-vs-openai-decisions-api.json", "title": "Kev vs OpenAI Decisions API", "url": "https://www.anchorterminal.com/compare/jaredpalmer-kev-vs-openai-decisions-api" }, { "json": "https://www.anchorterminal.com/compare/liquid-d1-vs-nace-drex.json", "title": "Liquid d1 vs Drex 1.5", "url": "https://www.anchorterminal.com/compare/liquid-d1-vs-nace-drex" }, { "json": "https://www.anchorterminal.com/compare/liquid-d1-vs-openai-decisions-api.json", "title": "Liquid d1 vs OpenAI Decisions API", "url": "https://www.anchorterminal.com/compare/liquid-d1-vs-openai-decisions-api" }, { "json": "https://www.anchorterminal.com/compare/microsoft-decision-1-vs-nace-drex.json", "title": "Microsoft-Decision-1 vs Drex 1.5", "url": "https://www.anchorterminal.com/compare/microsoft-decision-1-vs-nace-drex" }, { "json": "https://www.anchorterminal.com/compare/microsoft-decision-1-vs-openai-decisions-api.json", "title": "Microsoft-Decision-1 vs OpenAI Decisions API", "url": "https://www.anchorterminal.com/compare/microsoft-decision-1-vs-openai-decisions-api" }, { "json": "https://www.anchorterminal.com/compare/nace-drex-vs-pplx-decider.json", "title": "Drex 1.5 vs pplx-decider", "url": "https://www.anchorterminal.com/compare/nace-drex-vs-pplx-decider" }, { "json": "https://www.anchorterminal.com/compare/nace-drex-vs-strands-decider.json", "title": "Drex 1.5 vs Strands Decider 2B", "url": "https://www.anchorterminal.com/compare/nace-drex-vs-strands-decider" }, { "json": "https://www.anchorterminal.com/compare/nace-drex-vs-typesafe-jev.json", "title": "Drex 1.5 vs Jev", "url": "https://www.anchorterminal.com/compare/nace-drex-vs-typesafe-jev" }, { "json": "https://www.anchorterminal.com/compare/nace-drex-vs-vela.json", "title": "Drex 1.5 vs Vela 2.0", "url": "https://www.anchorterminal.com/compare/nace-drex-vs-vela" }, { "json": "https://www.anchorterminal.com/compare/openai-decisions-api-vs-pplx-decider.json", "title": "OpenAI Decisions API vs pplx-decider", "url": "https://www.anchorterminal.com/compare/openai-decisions-api-vs-pplx-decider" }, { "json": "https://www.anchorterminal.com/compare/openai-decisions-api-vs-strands-decider.json", "title": "OpenAI Decisions API vs Strands Decider 2B", "url": "https://www.anchorterminal.com/compare/openai-decisions-api-vs-strands-decider" }, { "json": "https://www.anchorterminal.com/compare/openai-decisions-api-vs-typesafe-jev.json", "title": "OpenAI Decisions API vs Jev", "url": "https://www.anchorterminal.com/compare/openai-decisions-api-vs-typesafe-jev" }, { "json": "https://www.anchorterminal.com/compare/openai-decisions-api-vs-vela.json", "title": "OpenAI Decisions API vs Vela 2.0", "url": "https://www.anchorterminal.com/compare/openai-decisions-api-vs-vela" } ], "scores": [ { "by": 27, "edge": "nace-drex", "key": "reliability", "nace-drex": 80, "name": "Reliability", "openai-decisions-api": 53, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 1, "edge": "openai-decisions-api", "key": "schema", "nace-drex": 88, "name": "Schema \u0026 documentation", "openai-decisions-api": 89, "weight": 13 }, { "by": 2, "edge": "openai-decisions-api", "key": "ergonomics", "nace-drex": 85, "name": "Agent ergonomics", "openai-decisions-api": 87, "weight": 13 }, { "by": 18, "edge": "openai-decisions-api", "key": "security", "nace-drex": 65, "name": "Security \u0026 auth", "openai-decisions-api": 83, "weight": 14 }, { "by": 10, "edge": "nace-drex", "key": "payments", "nace-drex": 40, "name": "Payments \u0026 pricing", "openai-decisions-api": 30, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 12, "edge": "openai-decisions-api", "key": "maintenance", "nace-drex": 65, "name": "Maintenance \u0026 community", "openai-decisions-api": 77, "weight": 7 }, { "by": 20, "edge": "openai-decisions-api", "key": "transparency", "nace-drex": 63, "name": "Transparency \u0026 trust", "openai-decisions-api": 83, "weight": 7 } ], "summary": "OpenAI Decisions API scores 71.5 (BB) on agent readiness against Drex 1.5's 69.7 (B), and leads in 5 of 7 scored categories. Drex 1.5 leads on reliability and payments \u0026 pricing. Both do decision models.", "verdicts": { "nace-drex": "The hosted endpoint has a public OpenAPI document, published limits and pinned model versions, at $0.05 per million input tokens with no output charge. The #1 under 10B claim rests on Nace's own run, since Drex is absent from both public boards. Weights carry Open RAIL-M, which requires a commercial licence above $1 million in revenue or funding.", "openai-decisions-api": "Typed predicate, choice and score answers with probabilities, up to 200 questions a call, at $0.10 per million input tokens with no output charge. It is a public beta released on 6 October 2026, with one model alias, no dated snapshot, no Batch route and no SLA found." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/nace-drex-vs-openai-decisions-api", "json": "https://www.anchorterminal.com/compare/nace-drex-vs-openai-decisions-api.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/nace-drex-vs-openai-decisions-api.md", "slim": "https://www.anchorterminal.com/compare/nace-drex-vs-openai-decisions-api.min.md" }, "markdown": "OpenAI Decisions API scores 71.5 (BB) on agent readiness against Drex 1.5's 69.7 (B), and leads in 5 of 7 scored categories. Drex 1.5 leads on reliability and payments \u0026 pricing. Both do decision models.\n\n- Drex 1.5: grade B, 69.7/100, rank #172 of 954. Markdown https://www.anchorterminal.com/tools/nace-drex.md · JSON https://www.anchorterminal.com/api/v1/tools/nace-drex.json\n- OpenAI Decisions API: grade BB, 71.5/100, rank #123 of 954. Markdown https://www.anchorterminal.com/tools/openai-decisions-api.md · JSON https://www.anchorterminal.com/api/v1/tools/openai-decisions-api.json\n- Best decision models for AI agents: https://www.anchorterminal.com/best/decision-models/index.md\n- All 91 decisions comparisons: https://www.anchorterminal.com/compare/decision-models/index.md\n\n## Which one, for what\n\n### Drex 1.5 (B)\n\nGood for: Routing, triage and yes or no gates inside an agent, where the caller supplies the options and acts on the probabilities. Suited to hosted use at a low per-token price, or to open weights where the licence fits.\n\nAhead on:\n- Reliability, 80 against 53\n- Payments \u0026 pricing, 40 against 30\n\nWatch for: The rank 1 claim comes from Nace's own run on Decision Index 0.3.1, and Drex is not on the public board for 0.3 or 0.2.1.\n\n### OpenAI Decisions API (BB)\n\nGood for: High-volume yes or no checks, routing among fixed options and rubric scoring over text and images, for teams already on an OpenAI key.\n\nAhead on:\n- Security \u0026 auth, 83 against 65\n- Maintenance \u0026 community, 77 against 65\n- Transparency \u0026 trust, 83 against 63\n\nAlso in its favour:\n- Agent-ready, a grade of BB or better\n\nWatch for: Public beta released on 6 October 2026. The guide expects general availability in the coming weeks and gives no date\n\n\n## Score by category\n\n| Category | Weight | Drex 1.5 | OpenAI Decisions API | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 80 | 53 | Drex 1.5 +27 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 88 | 89 | OpenAI Decisions API +1 |\n| Agent ergonomics | 13% (16.2 this run) | 85 | 87 | OpenAI Decisions API +2 |\n| Security \u0026 auth | 14% (17.5 this run) | 65 | 83 | OpenAI Decisions API +18 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 40 | 30 | Drex 1.5 +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 65 | 77 | OpenAI Decisions API +12 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 63 | 83 | OpenAI Decisions API +20 |\n| Negative events | ≤15 | -2 | 0 | |\n| **Total** | | **69.7 · B** | **71.5 · BB** | |\n\n## Facts side by side\n\n| Fact | Drex 1.5 | OpenAI Decisions API |\n| --- | --- | --- |\n| Kind | Model API | Model API |\n| Vendor | Nace AI, Inc. (Nace.AI) | OpenAI |\n| Hosted endpoint | `https://console.nace.ai/v1/systemone` | `https://api.openai.com/v1/decisions` |\n| Transports | HTTP | HTTP |\n| Auth | API key | API key |\n| Pricing | Freemium | Pay per use |\n| Price for decision models | not published | $0.10 per 1M tokens |\n| x402 | no | no |\n| Licence | Hosted API under the Nace AI Terms of Service, last updated 5 May 2026. Weights under the Nace AI Open RAIL-M licence (modified, version 1.0, October 2026), which is not an open-source licence. Businesses above $1 million in revenue or funding need a separate commercial licence, and competing products are excluded. The bundled code/kev package, derived from Jared Palmer's Kev (https://github.com/jaredpalmer/kev), and the GitHub repository are Apache-2.0, and the agent skill is MIT. | Proprietary service under OpenAI's services agreement. The official SDKs are Apache-2.0 |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-09-28 | 2026-10-06 |\n| Terms last updated | | couldn't be read |\n| Privacy policy last updated | | couldn't be read |\n| Customer content may train models | | couldn't be read |\n| Terms restrict automated access | | couldn't be read |\n| Terms restrict benchmarking | | couldn't be read |\n| Terms or service can change without notice | | couldn't be read |\n| Arbitration or class-action waiver | | couldn't be read |\n| Popularity | 318 npm/wk, 156 PyPI/wk | 32k stars |\n\n## Verdicts\n\n**Drex 1.5.** The hosted endpoint has a public OpenAPI document, published limits and pinned model versions, at $0.05 per million input tokens with no output charge. The #1 under 10B claim rests on Nace's own run, since Drex is absent from both public boards. Weights carry Open RAIL-M, which requires a commercial licence above $1 million in revenue or funding.\n\n**OpenAI Decisions API.** Typed predicate, choice and score answers with probabilities, up to 200 questions a call, at $0.10 per million input tokens with no output charge. It is a public beta released on 6 October 2026, with one model alias, no dated snapshot, no Batch route and no SLA found.\n\n## Before you call either\n\n### Drex 1.5\n\n1. Call https://console.nace.ai/v1/systemone with Authorization: Bearer nace_sk_..., and pin model drex-v1.5 rather than drex-latest in production.\n2. Stop on 402 insufficient_credit or 402 payment_required until credit is topped up or the unpaid invoice is paid.\n3. Retry 429 and 529 after retry-after-ms. On a 422 for an unknown model, use one of the ids the error message lists.\n4. Keep state below 131,072 tokens and the body below 1,048,576 bytes, and send at most 512 questions per request.\n5. Keep the key on a server. A key in browser code is exposed, and the /v1 routes send no Access-Control-Allow-Origin header.\n6. Check usage.input_tokens and the usage CSV after retries, since /v1/systemone documents no idempotency key.\n\n### OpenAI Decisions API\n\n1. Put independent questions about one input in a single `questions` array. Send a separate request when a question depends on an earlier answer\n2. Check each answer's `type` before reading it. A question can come back as `refusal` while the others in the same request are answered\n3. Encode images as base64 data URLs. Hosted URLs and `file_id` inputs are rejected\n4. Give a `choice` question a fallback value such as `other`, and set thresholds from your own labelled examples\n5. Use Python SDK 3.26.0 or JavaScript 7.30.0 or later, and follow `Retry-After` on 429 and 503\n\n## Questions\n\n### Which is better for AI agents, Drex 1.5 or OpenAI Decisions API?\n\nOpenAI Decisions API scores 71.5 (BB) on agent readiness against Drex 1.5's 69.7 (B), and leads in 5 of 7 scored categories. Drex 1.5 leads on reliability and payments \u0026 pricing.\n\n### Do Drex 1.5 and OpenAI Decisions API need an API key?\n\nBoth need an API key.\n\n### Can an agent call Drex 1.5 and OpenAI Decisions API without installing anything?\n\nYes. Drex 1.5 has a hosted endpoint at https://console.nace.ai/v1/systemone and OpenAI Decisions API at https://api.openai.com/v1/decisions.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/nace-drex-vs-openai-decisions-api.json, and with the fewest tokens: https://www.anchorterminal.com/compare/nace-drex-vs-openai-decisions-api.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"nace-drex\", \"b\": \"openai-decisions-api\"}`. From a terminal: `anchor compare nace-drex openai-decisions-api`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/nace-drex.json and https://www.anchorterminal.com/api/v1/tools/openai-decisions-api.json\n\n## Other comparisons with Drex 1.5 or OpenAI Decisions API\n\n- [Celeris-1 Decision vs Drex 1.5](https://www.anchorterminal.com/compare/celeris-1-decision-vs-nace-drex.md)\n- [Celeris-1 Decision vs OpenAI Decisions API](https://www.anchorterminal.com/compare/celeris-1-decision-vs-openai-decisions-api.md)\n- [Clef vs Drex 1.5](https://www.anchorterminal.com/compare/cloudflare-clef-vs-nace-drex.md)\n- [Clef vs OpenAI Decisions API](https://www.anchorterminal.com/compare/cloudflare-clef-vs-openai-decisions-api.md)\n- [Laya vs Drex 1.5](https://www.anchorterminal.com/compare/convai-laya-vs-nace-drex.md)\n- [Laya vs OpenAI Decisions API](https://www.anchorterminal.com/compare/convai-laya-vs-openai-decisions-api.md)\n- [Decider vs Drex 1.5](https://www.anchorterminal.com/compare/decider-vs-nace-drex.md)\n- [Decider vs OpenAI Decisions API](https://www.anchorterminal.com/compare/decider-vs-openai-decisions-api.md)\n- [GLiClass vs Drex 1.5](https://www.anchorterminal.com/compare/gliclass-vs-nace-drex.md)\n- [GLiClass vs OpenAI Decisions API](https://www.anchorterminal.com/compare/gliclass-vs-openai-decisions-api.md)\n- [Kev vs Drex 1.5](https://www.anchorterminal.com/compare/jaredpalmer-kev-vs-nace-drex.md)\n- [Kev vs OpenAI Decisions API](https://www.anchorterminal.com/compare/jaredpalmer-kev-vs-openai-decisions-api.md)\n- [Liquid d1 vs Drex 1.5](https://www.anchorterminal.com/compare/liquid-d1-vs-nace-drex.md)\n- [Liquid d1 vs OpenAI Decisions API](https://www.anchorterminal.com/compare/liquid-d1-vs-openai-decisions-api.md)\n- [Microsoft-Decision-1 vs Drex 1.5](https://www.anchorterminal.com/compare/microsoft-decision-1-vs-nace-drex.md)\n- [Microsoft-Decision-1 vs OpenAI Decisions API](https://www.anchorterminal.com/compare/microsoft-decision-1-vs-openai-decisions-api.md)\n- [Drex 1.5 vs pplx-decider](https://www.anchorterminal.com/compare/nace-drex-vs-pplx-decider.md)\n- [Drex 1.5 vs Strands Decider 2B](https://www.anchorterminal.com/compare/nace-drex-vs-strands-decider.md)\n- [Drex 1.5 vs Jev](https://www.anchorterminal.com/compare/nace-drex-vs-typesafe-jev.md)\n- [Drex 1.5 vs Vela 2.0](https://www.anchorterminal.com/compare/nace-drex-vs-vela.md)\n- [OpenAI Decisions API vs pplx-decider](https://www.anchorterminal.com/compare/openai-decisions-api-vs-pplx-decider.md)\n- [OpenAI Decisions API vs Strands Decider 2B](https://www.anchorterminal.com/compare/openai-decisions-api-vs-strands-decider.md)\n- [OpenAI Decisions API vs Jev](https://www.anchorterminal.com/compare/openai-decisions-api-vs-typesafe-jev.md)\n- [OpenAI Decisions API vs Vela 2.0](https://www.anchorterminal.com/compare/openai-decisions-api-vs-vela.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-10", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.4", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Drex 1.5 vs OpenAI Decisions API", "url": "" } ], "description": "OpenAI Decisions scores 71.5 (BB) to Drex 1.5's 69.7 (B) for decision models. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Drex 1.5 B 69.7", "OpenAI Decisions API BB 71.5", "scores" ], "h1": "Drex 1.5 vs OpenAI Decisions API", "image": "https://www.anchorterminal.com/assets/og/compare-nace-drex-vs-openai-decisions-api.png", "path": "/compare/nace-drex-vs-openai-decisions-api", "published": "2026-10-01", "section": "tools", "title": "Drex 1.5 vs OpenAI Decisions for AI agents in 2026: scores and prices", "toc": null, "updated": "2026-10-10", "url": "https://www.anchorterminal.com/compare/nace-drex-vs-openai-decisions-api" }, "tokens": { "markdown": 2700, "slim": 830 }, "version": 1 }