{"asOf":"2026-10-28","storesIpAddresses":false,"providerId":"anthropic","smokeTestCmd":"curl -sS https://api.anthropic.com/v1/models -H \"x-api-key: $ANTHROPIC_API_KEY\" -H \"anthropic-version: 2023-06-01\" | head -c 200","rateLimitCeiling":"Tier 1: 50 RPM / 40K-80K ITPM; Tier 4: 4,000 RPM / 400K+ ITPM.","timeoutOrPayloadTrap":"HTTP 529 Overloaded_error during peak US hours; retired 2024 snapshot IDs (claude-3-5-sonnet-20240620) return 404 not_found_error.","day2ProductionGotchas":["Always configure automatic 529/429 failover to OpenRouter or AWS Bedrock.","Enable prompt caching (cache_control: ephemeral) on system prompts >1,024 tokens to cut input cost by up to 90%."]}