LLM API Providers · reliability comparison
Cohere vs Perplexity API: which is more reliable? (2026)
Perplexity API is more reliable than Cohere, scoring 93.8 vs 91.6 out of 100. Over the last 90 days Cohere reported 2 incidents and Perplexity API reported 3, with effective uptime of 99.94% and 99.94% respectively. Perplexity API resolves incidents faster on average (36m).
Data updated Nov 1, 2026 · How we score
| Metric | Cohere | Perplexity API |
|---|---|---|
| Reliability score | 91.6 | 93.8 |
| Rank (LLM API providers) | #2 | #1 |
| Uptime (90 days) | 99.94% | 99.94% |
| Incidents (90 days) | 2 | 3 |
| Partial / major outages | 1 | 1 |
| Avg time to resolve | 2h 40m | 36m |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Cohere and Perplexity API differ
- Perplexity API reported 50% more incidents than Cohere over the last 90 days (3 vs 2).
- Perplexity API fixes problems faster: 36m on average, against 2h 40m for Cohere (4.5× quicker).
- Cohere's longest outage on record lasted 1h 18m (Feb 13, 2026); Perplexity API's lasted 4h 31m (Jun 4, 2026).
90-day uptime
Cohere
Perplexity API
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Cohere incidents
- Degraded performanceSep 1, 2026 · resolved in 4h 22m
Affected: command-a-reasoning-08-2025, rerank-v4.0-fast, All Endpoints, embeddings, rerank-english-v3.0, embed-v4.0
- Partial outageAug 5, 2026 · resolved in 57m
Documentation Content Loading Issues
Affected: Docs
Recent Perplexity API incidents
- Degraded performanceOct 9, 2026 · resolved in 37m
Elevated API errors and timeouts
Affected: Website, App, Computer, API
- Major outageAug 13, 2026 · resolved in 1h 4m
Investigating API issueofficial update ↗
Affected: App
- Degraded performanceAug 11, 2026 · resolved in 6m
Other LLM API providers to consider
- Groq · #3 · 99.94% uptime
- Cerebras Inference · #4 · 99.88% uptime
- xAI API · #5 · 99.76% uptime
- DeepSeek API · #6 · 100% uptime