LLM API Providers · reliability comparison
Anthropic API vs Fireworks AI: which is more reliable? (2026)
Fireworks AI is more reliable than Anthropic API, scoring 44.0 vs 37.1 out of 100. Over the last 90 days Anthropic API reported 36 incidents and Fireworks AI reported 231, with effective uptime of 97.54% and 98.04% respectively. Fireworks AI resolves incidents faster on average (53m).
Data updated Nov 2, 2026 · How we score
| Metric | Anthropic API | Fireworks AI |
|---|---|---|
| Reliability score | 37.1 | 44.0 |
| Rank (LLM API providers) | #11 | #10 |
| Uptime (90 days) | 97.54% | 98.04% |
| Incidents (90 days) | 36 | 231 |
| Partial / major outages | 23 | 2 |
| Avg time to resolve | 3h 34m | 53m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Anthropic API and Fireworks AI differ
- Fireworks AI reported 6.4× as many incidents as Anthropic API over the last 90 days (231 vs 36).
- Anthropic API had 23 partial or major outages, compared with 2 for Fireworks AI.
- Fireworks AI fixes problems faster: 53m on average, against 3h 34m for Anthropic API (4.1× quicker).
- Anthropic API's longest outage on record lasted 3d (Oct 7, 2026); Fireworks AI's lasted 1d 22h (Aug 11, 2026).
90-day uptime
Anthropic API
Fireworks AI
- 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 Fireworks AI incidents
- Degraded performanceNov 2, 2026 · resolved in 5m
Service Degradation for GLM 5.3 Flash
Affected: GLM 5.3 Flash
- Degraded performanceOct 31, 2026 · resolved in 13m
Service Degradation for Muse Spark Open US
Affected: Muse Spark Open US
- Degraded performanceOct 31, 2026 · resolved in 5m
Service Degradation for Kimi K3
Affected: Kimi K3
- InformationalOct 30, 2026 · ongoing
- Degraded performanceOct 30, 2026 · resolved in 36m
Service Degradation for Qwen 3.8 Max
Affected: Qwen 3.8 Max
- Degraded performanceOct 30, 2026 · resolved in 32m
Service Degradation for Qwen 3.8 Max
Affected: Qwen 3.8 Max
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