Promised uptime vs actual

Vendors35Services99

35 vendors · 99 services

Claude API (Standard tier) SLA

Anthropic · AI models · no public SLA · SLA of Jun 17, 2025 · checked 47d ago

Official SLAStatus page

No public SLA, so there is no promise to test. Observed over 365 days: 98.805%.

Incidents, last 365 days

DegradedOct 27, 2026
Elevated errors for Claude Sonnet 5.5
A partial outage or slowdown on claude.ai, Claude API (api.anthropic.com), Claude Code and 1 more for 41 min, not counted as downtime.
13 days ago
DegradedOct 27, 2026
Elevated errors for Claude Sonnet 5.5
A partial outage or slowdown on claude.ai, Claude API (api.anthropic.com), Claude Code and 1 more for 42 min, not counted as downtime.
13 days ago
DegradedOct 25, 2026
Elevated errors for Claude Fable 5.1
A partial outage or slowdown on claude.ai, Claude API (api.anthropic.com), Claude Code and 1 more for 32 min, not counted as downtime.
2 weeks ago
DegradedOct 25, 2026
Elevated errors for Claude Sonnet 5.5 and other models
A partial outage or slowdown on claude.ai, Claude API (api.anthropic.com), Claude Code and 1 more for 99 min, not counted as downtime.
2 weeks ago
DegradedOct 24, 2026
Elevated errors for Claude Fable 5 and Claude Fable 5.1
A partial outage or slowdown on claude.ai, Claude API (api.anthropic.com), Claude Code and 1 more for 37 min, not counted as downtime.
2 weeks ago
DegradedOct 24, 2026
Elevated errors for Claude Opus 5.5
A partial outage or slowdown on claude.ai, Claude API (api.anthropic.com), Claude Code and 1 more for 6 min, not counted as downtime.
2 weeks ago
OutageOct 23, 2026
Elevated errors for Claude Fable 5.1, Sonnet 5.5, and Haiku 5.5
A major outage on claude.ai, Claude API (api.anthropic.com), Claude Code and 1 more for 34 min, counted as downtime.
2 weeks ago
MinorOct 21, 2026
Degraded performance for Claude Fable 5
A minor incident on claude.ai, Claude API (api.anthropic.com), Claude Code and 1 more for 40 min, not counted as downtime.
2 weeks ago
DegradedOct 7, 2026
Elevated errors on platform.claude.com
A partial outage or slowdown on Claude Console (platform.claude.com) for 72 h, not counted as downtime.
72 h counted, ran 6.2 d4 weeks ago
DegradedOct 7, 2026
Elevated errors loading usage data on platform.claude.com
A partial outage or slowdown on Claude Console (platform.claude.com) for 73 min, not counted as downtime.
4 weeks ago
DegradedOct 6, 2026
Elevated errors for Claude Opus 5.5
A partial outage or slowdown on claude.ai, Claude API (api.anthropic.com), Claude Code and 1 more for 19 min, not counted as downtime.
4 weeks ago
DegradedOct 5, 2026
Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1
A partial outage or slowdown on claude.ai, Claude API (api.anthropic.com), Claude Code and 1 more for 16 min, not counted as downtime.
5 weeks ago
MinorOct 1, 2026
Delayed credits on the Claude Platform
A minor incident on Claude Console (platform.claude.com), Claude API (api.anthropic.com) for 6.3 h, not counted as downtime.
5 weeks ago
DegradedSep 29, 2026
Elevated errors on claude.ai, Claude Code, Claude Cowork and the Claude API
A partial outage or slowdown on claude.ai, Claude Console (platform.claude.com), Claude API (api.anthropic.com) and 2 more for 2.1 h, not counted as downtime.
5 weeks ago
DegradedSep 22, 2026
Elevated errors for multiple models
A partial outage or slowdown on claude.ai, Claude API (api.anthropic.com), Claude Code and 1 more for 98 min, not counted as downtime.
6 weeks ago
DegradedSep 15, 2026
Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1
A partial outage or slowdown on claude.ai, Claude API (api.anthropic.com), Claude Code and 1 more for 86 min, not counted as downtime.
7 weeks ago
DegradedSep 11, 2026
Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1
A partial outage or slowdown on claude.ai, Claude API (api.anthropic.com), Claude Code and 1 more for 17 min, not counted as downtime.
8 weeks ago
MinorSep 10, 2026
Elevated latency on the Claude API for some users
A minor incident on Claude API (api.anthropic.com), Claude Cowork for 1.7 h, not counted as downtime.
2 months ago
DegradedSep 3, 2026
Elevated errors for multiple models
A partial outage or slowdown on claude.ai, Claude API (api.anthropic.com), Claude Code and 1 more for 3 h, not counted as downtime.
2 months ago
DegradedSep 3, 2026
Elevated errors for Claude Sonnet 5
A partial outage or slowdown on claude.ai, Claude API (api.anthropic.com), Claude Code and 1 more for 19 min, not counted as downtime.
2 months ago
DegradedSep 2, 2026
Elevated errors for Claude Sonnet 5
A partial outage or slowdown on claude.ai, Claude API (api.anthropic.com), Claude Code and 1 more for 26 min, not counted as downtime.
2 months ago
MinorSep 1, 2026
Delays in credit purchases
A minor incident on Claude Console (platform.claude.com) for 2 h, not counted as downtime.
2 months ago
MinorSep 1, 2026
Degraded performance on platform.claude.com and Claude for Microsoft Office 365
A minor incident on claude.ai, Claude Console (platform.claude.com) for 62 min, not counted as downtime.
2 months ago
DegradedAug 24, 2026
Elevated errors for multiple models
A partial outage or slowdown on claude.ai, Claude API (api.anthropic.com), Claude Code and 1 more for 3.4 h, not counted as downtime.
2 months ago
DegradedAug 20, 2026
Elevated errors on requests to multiple models
A partial outage or slowdown on claude.ai, Claude API (api.anthropic.com), Claude Code and 1 more for 26 min, not counted as downtime.
2 months ago

Latest 25 of 60.

Commitments and credits

Service tiers doc: 'The API prioritizes these requests alongside all other requests with best-effort availability.' Commercial Terms L.2: 'THE SERVICES AND OUTPUTS ARE PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTY OF ANY KIND'. Service Specific Terms and claude.com pricing/enterprise pages contain no SLA or uptime text.

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Terms, exclusions and sources
Measured
No uptime commitment; best-effort.
Not covered
Services provided 'AS IS' and 'AS AVAILABLE'; No published uptime or credit schedule; Any SLA only via negotiated enterprise contract
Status history
Status history since Sep 22, 2025
Weighted uptime
All incidents, weighted: 92.395% · Downtime

All Anthropic SLAsHow this is measured