{"name":"claude-3-5-sonnet","slug":"claude-3-5-sonnet","family":"model","title":"Models","noun":"model","description":"Switching to any Sonnet model name ending in [1m] now checks for 1M-context access, except four older Sonnet models","description_source":"entry","described_by":{"version":"2.1.283","anchor":"sonnet-1m-context-availability-check-now-covers-any-sonnet"},"presence":{"first_seen":null,"removed_in":null,"in_current_build":false,"newest_mined":"2.1.308","builds":0,"mined_builds":149,"first_cited":null},"aliases":[],"entries":[{"version":"2.1.283","anchor":"sonnet-1m-context-availability-check-now-covers-any-sonnet","heading":"The Sonnet 1M-context check now covers full Sonnet model names","line":"Switching to any Sonnet model name ending in [1m] now checks for 1M-context access, except four older Sonnet models","released_at":"2026-09-25 18:46:11","reason":"found in this entry's text"}],"entries_total":1,"docs":[{"source":"api","path":"about-claude\/model-deprecations","title":"model-deprecations","documented":false},{"source":"api","path":"release-notes\/overview","title":"overview","documented":false},{"source":"api","path":"release-notes\/system-prompts\/claude-haiku-3-5","title":"claude-haiku-3-5","documented":false},{"source":"api","path":"release-notes\/system-prompts\/claude-sonnet-3-5","title":"claude-sonnet-3-5","documented":false},{"source":"mcp","path":"specification\/2025-06-18\/schema","title":"Schema Reference","documented":false}],"docs_total":5,"gates":[],"related":[{"name":"claude-3-5-haiku","slug":"claude-3-5-haiku","description":"Haiku 3.5 in Claude Code's model table (display name `Haiku 3.5`, family `haiku`). It maps to `claude-3-5-haiku-20241022` on the first-party API, `us.anthropic.claude-3-5-haiku-20241022-v1:0` on Bedrock and `claude-3-5-haiku@20241022` on Vertex, takes its Vertex region from `VERTEX_REGION_CLAUDE_3_5_HAIKU`, and has a maximum output of `8192` tokens."}],"url":"https:\/\/changelogs.core-directive.com\/reference\/model\/claude-3-5-sonnet","family_url":"https:\/\/changelogs.core-directive.com\/reference\/model.json"}