LLM API Providers · reliability comparison
Anthropic API vs DeepSeek API: which is more reliable? (2026)
DeepSeek API is more reliable than Anthropic API, scoring 76.0 vs 36.8 out of 100. Over the last 90 days Anthropic API reported 36 incidents and DeepSeek API reported 26, with effective uptime of 97.52% and 100% respectively.
Data updated Nov 1, 2026 · How we score
| Metric | Anthropic API | DeepSeek API |
|---|---|---|
| Reliability score | 36.8 | 76.0 |
| Rank (LLM API providers) | #11 | #6 |
| Uptime (90 days) | 97.52% | 100% |
| Incidents (90 days) | 36 | 26 |
| Partial / major outages | 23 | 3 |
| Avg time to resolve | 3h 34m | — |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Anthropic API and DeepSeek API differ
- Anthropic API reported 38% more incidents than DeepSeek API over the last 90 days (36 vs 26).
- Anthropic API had 23 partial or major outages, compared with 3 for DeepSeek API.
90-day uptime
Anthropic API
DeepSeek API
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Anthropic API incidents
- Partial outageOct 27, 2026 · resolved in 41m
Elevated errors for Claude Sonnet 5.5
Affected: claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork
- Partial outageOct 27, 2026 · resolved in 42m
Elevated errors for Claude Sonnet 5.5
Affected: claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork
- Partial outageOct 25, 2026 · resolved in 32m
Elevated errors for Claude Fable 5.1
Affected: claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork
- Partial outageOct 25, 2026 · resolved in 1h 39m
Elevated errors for Claude Sonnet 5.5 and other models
Affected: claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork
- Partial outageOct 24, 2026 · resolved in 37m
Elevated errors for Claude Fable 5 and Claude Fable 5.1
Affected: claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork
- Partial outageOct 24, 2026 · resolved in 6m
Elevated errors for Claude Opus 5.5
Affected: claude.ai, Claude API (api.anthropic.com), Claude Code, Claude Cowork
Recent DeepSeek API incidents
- Degraded performanceOct 27, 2026 · resolved (duration not published)
- Major outageOct 15, 2026 · resolved (duration not published)
DeepSeek 网页/API 部分中断（DeepSeek Web/API Partially Unavailable）
- Degraded performanceOct 12, 2026 · resolved (duration not published)
- Degraded performanceOct 8, 2026 · resolved (duration not published)
- Degraded performanceOct 1, 2026 · resolved (duration not published)
- Degraded performanceSep 23, 2026 · resolved (duration not published)
Other LLM API providers to consider
- Perplexity API · #1 · 99.94% uptime
- Cohere · #2 · 99.94% uptime
- Groq · #3 · 99.94% uptime
- Cerebras Inference · #4 · 99.88% uptime