Anthropic SLAAI vendor · Uptime guarantee, credits and support
Promise vs reality
Status history since Sep 22, 2025
All incidents, weighted: 94.774% · Downtime- Services with an SLA
- 1/3
- Highest SLA
- 99.5%
- Lowest observed, 365d
- 98.62%
- Fastest support
- n/a
Services and tiers
- Claude API (Standard tier)AI models · measured other · SLA of Jun 17, 2025
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.
- Claude API Priority TierAI models · measured other
- Priority Tier (existing commitments only)Organizations with an existing Priority Tier capacity commitment (input TPM + output TPM, 1/3/6/12 months, specific model). No longer sold.99.5%no credits
- Claude Enterprise (claude.ai)AI models · measured other
claude.com/pricing and claude.com/pricing/enterprise (fetched 2026-09-23) contain no 'SLA', 'uptime' or response-time text.
Support response times
Latest incidents
Status page- Sep 22, 2026Elevated errors for multiple modelsclaude.ai, Claude API (api.anthropic.com), Claude Code, Claude CoworkDegraded
- Sep 15, 2026Intermittent error spikes for Claude Mythos 5.1 and Claude Fable 5.1claude.ai, Claude API (api.anthropic.com), Claude Code, Claude CoworkDegraded
- Sep 11, 2026Elevated errors for Claude Mythos 5.1 and Claude Fable 5.1claude.ai, Claude API (api.anthropic.com), Claude Code, Claude CoworkDegraded
- Sep 10, 2026Elevated latency on the Claude API for some usersClaude API (api.anthropic.com), Claude CoworkMinor
- Sep 10, 2026Degraded functionality for Claude Cowork on WindowsClaude CoworkDegraded
- Sep 3, 2026Elevated errors for multiple modelsclaude.ai, Claude API (api.anthropic.com), Claude Code, Claude CoworkDegraded
- Sep 3, 2026Elevated errors for Claude Sonnet 5claude.ai, Claude API (api.anthropic.com), Claude Code, Claude CoworkDegraded
- Sep 2, 2026Elevated errors for Claude Sonnet 5claude.ai, Claude API (api.anthropic.com), Claude Code, Claude CoworkDegraded
- Sep 1, 2026Delays in credit purchasesClaude Console (platform.claude.com)Minor
- Sep 1, 2026Degraded performance on platform.claude.com and Claude for Microsoft Office 365claude.ai, Claude Console (platform.claude.com)Minor
- Sep 1, 2026Degraded performance on Claude for Microsoft Office 365claude.aiMinor
- Aug 31, 2026Degraded performance on claude.ai and Claude Codeclaude.ai, Claude CodeMinor
SLA changes
- Sep23Claude 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)).
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Anthropic vs OpenAISummaries of published SLAs; the contract you sign governs. Logos via logo.dev; trademarks belong to their owners.