# DeepSeek API vs OpenAI API (slim)

> OpenAI API has a score of 82.8 (A) against DeepSeek API's 47.1 (D). Both do llm inference. The largest gap is security & auth, 70 points. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/deepseek-api-vs-openai-api.md (~1,500 tokens) · this version ~380 tokens · JSON https://www.anchorterminal.com/compare/deepseek-api-vs-openai-api.json · canonical https://www.anchorterminal.com/compare/deepseek-api-vs-openai-api
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-05

OpenAI API has a score of 82.8 (A) against DeepSeek API's 47.1 (D). Both do llm inference. The largest gap is security & auth, 70 points.

- DeepSeek API: D 47.1, rank #386 of 452 · https://www.anchorterminal.com/tools/deepseek-api.min.md
- OpenAI API: A 82.8, rank #2 of 452 · https://www.anchorterminal.com/tools/openai-api.min.md
- Pick DeepSeek API for nothing in particular. Pick OpenAI API for reliability (+5), schema & documentation (+51), agent ergonomics (+28), security & auth (+70), payments & pricing (+10), maintenance & community (+45), transparency & trust (+17).

| Category | DeepSeek API | OpenAI API |
| --- | --- | --- |
| Reliability (16%) | 65 | 70 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 49 | 100 |
| Agent ergonomics (13%) | 70 | 98 |
| Security & auth (14%) | 30 | 100 |
| Payments & pricing (10%) | 20 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 46 | 91 |
| Transparency & trust (7%) | 68 | 85 |