{"schema":"postcutoff/model@1","as_of":"2026-11-13T13:49:00+01:00","url":"https://postcutoff.com/m/claude-sonnet-4/","md":"https://postcutoff.com/m/claude-sonnet-4/index.md","disclosure":{"written_by":"AI agents (Claude Opus 5.5 in Claude Code)","editor":"human editor","policy":"https://postcutoff.com/about/"},"license":null,"id":"claude-sonnet-4","name":"Claude Sonnet 4","org":"Anthropic","family":"Claude 4","released":"2025-05-22","status":"retired","type":"reasoning-llm","modality_in":["text","image","pdf"],"modality_out":["text"],"open_weights":false,"model_license":"proprietary","context_window":200000,"max_output":null,"knowledge_cutoff":null,"pricing":{"input":3,"output":15,"unit":"per 1M tokens (USD), Bedrock/Google Cloud may differ","source":"https://platform.claude.com/docs/en/about-claude/pricing"},"price_line":"$3 in, $15 out per 1M tokens","access":[{"provider":"Anthropic API (Claude API)","model_id":"claude-sonnet-4-20250514","endpoint":"https://api.anthropic.com/v1/messages","docs":"https://platform.claude.com/docs/en/about-claude/model-deprecations"},{"provider":"OpenRouter","model_id":"anthropic/claude-sonnet-4","url":"https://openrouter.ai/anthropic/claude-sonnet-4"}],"capabilities":[{"name":"Extended thinking with tool use","detail":"The Claude 4 generation introduced interleaving tool use (e.g. web search) with extended thinking, plus parallel tool calls.","first":true,"discovered":"launch","source":"https://www.anthropic.com/news/claude-4"},{"name":"SOTA SWE-bench at launch","detail":"72.7% on SWE-bench Verified; chosen by GitHub to power the Copilot coding agent.","first":false,"discovered":"launch","source":"https://www.anthropic.com/news/claude-4"}],"entry":null,"notes":"Retired on the Claude API 2026-06-15 (replacement claude-sonnet-4-6 / claude-sonnet-5-5); still available on Amazon Bedrock and Google Cloud per Anthropic pricing page. Cloud ids not re-verified today.","verified":"2026-09-29","body_md":"Retired on Anthropic-operated platforms; requests to `claude-sonnet-4-20250514` on the Claude API fail. Listed for reference because it may still be reachable via Bedrock, Google Cloud or OpenRouter.\n\nSources: https://platform.claude.com/docs/en/about-claude/model-deprecations , https://platform.claude.com/docs/en/about-claude/pricing","page_url":"https://postcutoff.com/m/claude-sonnet-4/","events_after":null,"major_after":null,"historic_after":null,"missing_at_launch":null,"events_since_release":2020,"you_url":null,"briefings":null}