# Drex 1.5 vs OpenAI Decisions API (slim)

> 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.

- Full: https://www.anchorterminal.com/compare/nace-drex-vs-openai-decisions-api.md (~2,700 tokens) · this version ~830 tokens · JSON https://www.anchorterminal.com/compare/nace-drex-vs-openai-decisions-api.json · canonical https://www.anchorterminal.com/compare/nace-drex-vs-openai-decisions-api
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-10

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 & pricing. Both do decision models.

- Drex 1.5: B 69.7, rank #172 of 954 · https://www.anchorterminal.com/tools/nace-drex.min.md
- OpenAI Decisions API: BB 71.5, rank #123 of 954 · https://www.anchorterminal.com/tools/openai-decisions-api.min.md
- Drex 1.5, good 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. Ahead on Reliability, 80 against 53; Payments & pricing, 40 against 30.
- OpenAI Decisions API, good 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. Ahead on Security & auth, 83 against 65; Maintenance & community, 77 against 65; Transparency & trust, 83 against 63. Also Agent-ready, a grade of BB or better.

| Category | Drex 1.5 | OpenAI Decisions API |
| --- | --- | --- |
| Reliability (16%) | 80 | 53 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 88 | 89 |
| Agent ergonomics (13%) | 85 | 87 |
| Security & auth (14%) | 65 | 83 |
| Payments & pricing (10%) | 40 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 65 | 77 |
| Transparency & trust (7%) | 63 | 83 |

| Fact (where they differ) | Drex 1.5 | OpenAI Decisions API |
| --- | --- | --- |
| Vendor | Nace AI, Inc. (Nace.AI) | OpenAI |
| Hosted endpoint | `https://console.nace.ai/v1/systemone` | `https://api.openai.com/v1/decisions` |
| Pricing | Freemium | Pay per use |
| Price for decision models | not published | $0.10 per 1M tokens |
| 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 |
| Last release | 2026-09-28 | 2026-10-06 |
| Terms last updated |  | couldn't be read |
| Privacy policy last updated |  | couldn't be read |
| Customer content may train models |  | couldn't be read |
| Terms restrict automated access |  | couldn't be read |
| Terms restrict benchmarking |  | couldn't be read |
| Terms or service can change without notice |  | couldn't be read |
| Arbitration or class-action waiver |  | couldn't be read |
| Popularity | 318 npm/wk, 156 PyPI/wk | 32k stars |