Anthropic SLA
AI · 1 of 3 services with an SLA · up to 99.5% · checked 26h ago
Services
Claude API (Standard tier)AI modelsNoneFirst creditn/aObserved 365d98.76%All incidents 94.774%
Latest incidents
Status page- Elevated errors for multiple modelsclaude.ai, Claude API (api.anthropic.com), Claude Code, Claude CoworkDegradedSep 22, 2026 · 98 min
- Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1claude.ai, Claude API (api.anthropic.com), Claude Code, Claude CoworkDegradedSep 15, 2026 · 86 min
- Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1claude.ai, Claude API (api.anthropic.com), Claude Code, Claude CoworkDegradedSep 11, 2026 · 17 min
- Elevated latency on the Claude API for some usersClaude API (api.anthropic.com), Claude CoworkMinorSep 10, 2026 · 1.7 h
- Degraded functionality for Claude Cowork on WindowsClaude CoworkDegradedSep 10, 2026 · 72 h counted, ran 4.1 d
- Elevated errors for multiple modelsclaude.ai, Claude API (api.anthropic.com), Claude Code, Claude CoworkDegradedSep 3, 2026 · 3 h
- Elevated errors for Claude Sonnet 5claude.ai, Claude API (api.anthropic.com), Claude Code, Claude CoworkDegradedSep 3, 2026 · 19 min
- Elevated errors for Claude Sonnet 5claude.ai, Claude API (api.anthropic.com), Claude Code, Claude CoworkDegradedSep 2, 2026 · 26 min
- Delays in credit purchasesClaude Console (platform.claude.com)MinorSep 1, 2026 · 2 h
- Degraded performance on platform.claude.com and Claude for Microsoft Office 365claude.ai, Claude Console (platform.claude.com)MinorSep 1, 2026 · 62 min
- Degraded performance on Claude for Microsoft Office 365claude.aiMinorSep 1, 2026 · 20 min
- Degraded performance on claude.ai and Claude Codeclaude.ai, Claude CodeMinorAug 31, 2026 · 74 min
Support response times
Anthropic publishes no support response times.
SLA changes
- Sep 23, 2026Claude API Priority TierPriority Tier moved from a purchasable offer ('Get started with Priority Tier ... Higher availability: Target 99.5% uptime', still present in the 2025-11-11 snapshot) to 'no longer available for purchase' for new commitments. The 99.5% target is unchanged. Exact change date unknown; after 2025-11-11, observed 2026-09-23.Source
About Anthropic
Only public number is the Priority Tier 99.5% uptime target, now closed to new buyers. Standard API is best-effort; Commercial Terms disclaim availability. No public support response times. Status page components (status.claude.com/api/v2/components.json): claude.ai, Claude Console (platform.claude.com), Claude API (api.anthropic.com), Claude Code, Claude Cowork, Claude for Government.
Anthropic, PBC is an American artificial intelligence (AI) public benefit corporation headquartered in San Francisco, California. Its flagship product is Claude, a series of proprietary large language models (LLMs). Source
Highest commitment: Claude API Priority Tier, 99.5% (Priority Tier (existing commitments only)).
Promise vs reality
- Status history
- Status history since Sep 22, 2025
- Weighted uptime
- All incidents, weighted: 94.774% · Downtime
- Status page
- status.claude.com/
- Across fru.dev
- Company profileAcquisitionsPaydaysChangefeedTechConf
- Compare with
- CohereHugging FaceMistral AIOpenAI
Sources: each vendor's own SLA page (re-read monthly) and status page feed (read every Friday). A summary, not the contract: the contract you sign governs. Logos via logo.dev; trademarks belong to their owners.