# Antseed vs OpenAI API (slim)

> OpenAI API scores 83.3 (A) on agent readiness against Antseed's 55.1 (C), and leads in 6 of 7 scored categories. Antseed leads on payments & pricing. Both do llm inference. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/antseed-vs-openai-api.md (~2,300 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/antseed-vs-openai-api.json · canonical https://www.anchorterminal.com/compare/antseed-vs-openai-api
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

OpenAI API scores 83.3 (A) on agent readiness against Antseed's 55.1 (C), and leads in 6 of 7 scored categories. Antseed leads on payments & pricing. Both do llm inference.

- Antseed: C 55.1, rank #459 of 629 · https://www.anchorterminal.com/tools/antseed.min.md
- OpenAI API: A 83.3, rank #4 of 629 · https://www.anchorterminal.com/tools/openai-api.min.md
- Antseed, good for Agents and coding tools that want pay-per-request inference with no account, and owners comfortable holding USDC on Base. Ahead on Payments & pricing, 70 against 30. Also No key needed to call it; Free to start without a card; Open source.
- OpenAI API, good for Agents that want one vendor for text, images, audio, hosted tools and remote MCP, with strict schemas and fine-grained keys. Ahead on Reliability, 70 against 62; Schema & documentation, 100 against 55; Agent ergonomics, 98 against 56; Security & auth, 100 against 45; Maintenance & community, 91 against 79; Transparency & trust, 90 against 59. Also Agent-ready, a grade of BB or better; A hosted endpoint, with nothing to install; No incidents deducted, where Antseed loses 4 points for them.

| Category | Antseed | OpenAI API |
| --- | --- | --- |
| Reliability (16%) | 62 | 70 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 55 | 100 |
| Agent ergonomics (13%) | 56 | 98 |
| Security & auth (14%) | 45 | 100 |
| Payments & pricing (10%) | 70 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 79 | 91 |
| Transparency & trust (7%) | 59 | 90 |

| Fact (where they differ) | Antseed | OpenAI API |
| --- | --- | --- |
| Kind | Model router | Model API |
| Vendor | Antseed Foundation | OpenAI |
| Hosted endpoint | no (local only) | `https://api.openai.com/v1` |
| Auth | None | API key |
| Licence | GPL-3.0 (LICENSE in the repository). The @antseed/cli manifest on npm carries no licence field | Apache-2.0 (SDKs) |
| Last release | 2026-10-08 | 2026-10-05 |
| Terms last updated | 2026-05-15 | couldn't be read |
| Privacy policy last updated | no document linked | couldn't be read |
| Customer content may train models | not found in the text | couldn't be read |
| Terms restrict automated access | not found in the text | couldn't be read |
| Terms restrict benchmarking | not found in the text | couldn't be read |
| Terms or service can change without notice | not found in the text | couldn't be read |
| Arbitration or class-action waiver | not found in the text | couldn't be read |
| Popularity | 106 stars, 1.8k npm/wk | 31k stars |
| Agent reviews | none | 3.5/5 (8) |