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Anthropic API vs OpenAI API

Reliability comparison based on uptime, incident history, and mean time to recovery. Updated daily.

	Anthropic API	OpenAI API
Current Status	Operational Best	Degraded
Uptime (30d)	95.162%	100.000% Best
Uptime (90d)	91.940%	100.000% Best
MTTR	4.7 hrs Best	N/A
Incidents (30d)	51	0 Best
Incidents (90d)	89	0 Best
Reliability Score	70.7/100	100.0/100 Best

Anthropic API Status → OpenAI API Status →

Recent Incidents

Anthropic API claude.ai and API unavailable

critical · Apr 30, 2026 — Apr 30, 2026

Resolved

critical

Anthropic API Elevated errors on Claude Haiku 4.5

minor · Apr 29, 2026 — Apr 29, 2026

Resolved

minor

Anthropic API Elevated errors on Claude Opus 4.7

minor · Apr 28, 2026 — Apr 29, 2026

Resolved

minor

Anthropic API Claude.ai unavailable

major · Apr 28, 2026 — Apr 28, 2026

Resolved

major

Anthropic API Claude.ai unavailable and elevated errors on the API

major · Apr 28, 2026 — Apr 28, 2026

Resolved

major

Anthropic API Claude.ai unavailable and elevated errors on the API

major · Apr 28, 2026 — Apr 28, 2026

Resolved

major

Anthropic API Elevated errors on Claude Sonnet 4.5

minor · Apr 28, 2026 — Apr 28, 2026

Resolved

minor

Anthropic API Elevated errors on Claude Haiku 4.5

minor · Apr 28, 2026 — Apr 28, 2026

Resolved

minor

Anthropic API Elevated billing related errors on Claude.ai

minor · Apr 27, 2026 — Apr 27, 2026

Resolved

none

Anthropic API Investigated elevated errors and slower responses on claude.ai

minor · Apr 25, 2026 — Apr 25, 2026

Resolved

none

Anthropic API Elevated errors on Claude Opus 4.7

minor · Apr 25, 2026 — Apr 25, 2026

Resolved

minor

Anthropic API Elevated errors on Claude Opus 4.7

minor · Apr 25, 2026 — Apr 25, 2026

Resolved

minor

Anthropic API Claude Code v2.1.120 Crashes on Startup

minor · Apr 25, 2026 — Apr 25, 2026

Resolved

minor

Anthropic API Elevated error rates on Claude Opus 4.7

minor · Apr 25, 2026 — Apr 25, 2026

Resolved

minor

Anthropic API Issues with sign-ups on platform.claude.com

major · Apr 24, 2026 — Apr 24, 2026

Resolved

major

Anthropic API Elevated errors on Claude Opus 4.7

minor · Apr 24, 2026 — Apr 24, 2026

Resolved

minor

Anthropic API we are seeing elevated errors on Sonnet 46

critical · Apr 24, 2026 — Apr 24, 2026

Resolved

critical

Anthropic API Elevated errors on Sonnet 4.6

critical · Apr 24, 2026 — Apr 24, 2026

Resolved

critical

Anthropic API Elevated errors on Claude Opus 4.7

minor · Apr 23, 2026 — Apr 23, 2026

Resolved

minor

Anthropic API MCP apps unavailable on Claude.ai

minor · Apr 23, 2026 — Apr 23, 2026

Resolved

minor

Frequently Asked Questions

Which is more reliable, Anthropic API or OpenAI API?

Based on our monitoring data, OpenAI API is currently more reliable than Anthropic API. OpenAI API has a reliability score of 100.0/100 compared to Anthropic API's 70.7/100. This score factors in uptime percentage, mean time to recovery, incident frequency, and consistency. Monitor both services with Happy Uptime for real-time alerts.

Which has better uptime, Anthropic API or OpenAI API?

Over the last 30 days, OpenAI API has a higher uptime of 100.000% compared to Anthropic API's 95.162%. We check both services every 5 minutes from multiple global regions.

Is Anthropic API more stable than OpenAI API?

OpenAI API has been more stable over the past 90 days with 0 incidents compared to Anthropic API's 89 incidents. Fewer incidents generally indicates a more stable service. Use Happy Uptime to track both services and get AI-powered incident analysis.

Monitor both Anthropic API and OpenAI API with Happy Uptime

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