Alternatives
Most reliable OpenAI API alternatives (2026)
OpenAI API has a reliability score of 49.1/100 with 98.73% uptime over the last 90 days. Here is how every alternative we track compares, ranked by reliability.
LLM API Providers alternatives to OpenAI API
| Alternative | Score | Uptime |
|---|---|---|
| Perplexity API#1 LLM API providerVisit site ↗ | 93.8 | 99.94% |
| Cohere#2 LLM API providerVisit site ↗ | 91.6 | 99.94% |
| Groq#3 LLM API providerVisit site ↗ | 91.4 | 99.94% |
| Cerebras Inference#4 LLM API providerVisit site ↗ | 89.3 | 99.88% |
| xAI API#5 LLM API providerVisit site ↗ | 82.1 | 99.77% |
| DeepSeek API#6 LLM API providerVisit site ↗ | 76.8 | 100% |
| Mistral API#7 LLM API providerVisit site ↗ | 72.0 | 99.63% |
| OpenRouter#8 LLM API providerVisit site ↗ | 62.9 | 99.44% |
| Fireworks AI#10 LLM API providerVisit site ↗ | 44.0 | 98.04% |
| Anthropic API#11 LLM API providerVisit site ↗ | 37.0 | 97.54% |