{"passport":{"slug":"claude-sonnet-4-6","display_name":"Claude Sonnet 4.6","model_type":"multimodal","parameter_count":"undisclosed","context_window":"200k tokens","claimed_developer":"Anthropic","confirmed_developer":"Anthropic","developer_confirmed_at":"2026-02-05T00:00:00+00:00","developer_source":"Official Anthropic announcement","first_appeared_at":"2026-02-05T00:00:00+00:00","first_appeared_on":"official announcement","status":"active","availability":"available","deployment_status":"not_deployed","availability_scope":null,"gate":3,"eu_ai_act":"registered — Anthropic signed full EU Code of Practice","regulatory_status":{"us":"available","eu_ai_act":"registered — Anthropic signed full EU Code of Practice","gdpr_notes":"GDPR compliant"},"open_source":false,"weights_available":false,"license":null,"provenance_chain":[{"role":"developer","entity":"Anthropic","source":"official announcement","confirmed_at":"2026-02-05"}],"parent_model":"claude-3-5-sonnet","model_family":"Claude","superseded_by":null,"supersedes":[{"slug":"claude-sonnet-4-5","display_name":"Claude Sonnet 4.5"}],"recommended_replacement":null,"product_links":null},"events":[{"event_type":"first_appearance","event_date":"2026-02-05T00:00:00+00:00","title":"Claude Sonnet 4.6 released alongside Claude Opus 4.6","detail":"Anthropic releases Claude 4.6 family. Sonnet 4.6 becomes dominant model for developer integrations and agentic workflows. Anthropic is full signatory of EU Code of Practice — unlike Meta (EU ban) and xAI (safety only).","source_url":"https://www.anthropic.com/news","source_name":"Anthropic official"},{"event_type":"first_appearance","event_date":"2023-04-01T00:00:00+00:00","title":"First recorded in AI news","detail":"Anthropic has announced the release of a new language model called Claude Sonnet 4.6. This updated model is expected to have improved capabilities and performance compared to previous versions.","source_url":"https://www.anthropic.com/news/claude-sonnet-4-6","source_name":"Anthropic News"}],"delta":{"days_unattributed":0,"claimed_developer":"Anthropic","confirmed_developer":"Anthropic","match":true}}