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claude-sonnet-4-6 Claude Developer Platform · title release-notes/system-prompts/claude-sonnet-4-6 model-deprecations Claude Developer Platform · in the page about-claude/model-deprecations …e | N/A | Not sooner than June 30, 2027 | | claude-sonnet-4-6 | Active | N/A | Not sooner than February 17, 2027 | | claude-sonnet-4-5-20250929… Or, for the model with the same capabilities and no access approval requirement: Claude Developer Platform · in the page about-claude/models/migration-guide …> #### Update your model name ```python # Sonnet migration model = "claude-sonnet-4-6" # Before model = "claude-sonnet-5" # After ``` #### What changed Items 4 and 5 in the following list are br… model-ids-and-versions Claude Developer Platform · in the page about-claude/models/model-ids-and-versions …ude Sonnet 5 and Claude Opus 5 omit the minor segment. For example: `claude-sonnet-4-6`, `claude-sonnet-5`, `claude-opus-4-6`, `claude-opus-4-7`, `claude-opus-4-8`, and `claude-opus-5` On Amazon Bed… advisor-tool Claude Developer Platform · in the page agents-and-tools/tool-use/advisor-tool …claude-opus-4-6) Claude Sonnet 5 (claude-sonnet-5) Claude Sonnet 4.6 (claude-sonnet-4-6) | | Claude Sonnet 4.6 (claude-sonnet-4-6) | Claude Mythos 5 (claude-mythos-5) Claude Fable 5 (claude-fable-5) C… code-execution-tool Claude Developer Platform · in the page agents-and-tools/tool-use/code-execution-tool …execution_20260120`, `code_execution_20260521` | | Claude Sonnet 4.6 (claude-sonnet-4-6) | `code_execution_20250825`, `code_execution_20260120`, `code_execution_20260521` | | Claude Opus 4.5… Process results programmatically Claude Developer Platform · in the page agents-and-tools/tool-use/programmatic-tool-calling …Claude Sonnet 5 (claude-sonnet-5) | | Claude Sonnet 4.6 (claude-sonnet-4-6) | | Claude Opus 4.5 (claude-opus-4-5-20251101) | | Claude Sonnet 4.5 (claude-sonnet-4-5-20250929)… tool-search-tool Claude Developer Platform · in the page agents-and-tools/tool-use/tool-search-tool …ex_20251119`, `tool_search_tool_bm25_20251119` | | Claude Sonnet 4.6 (claude-sonnet-4-6) | `tool_search_tool_regex_20251119`, `tool_search_tool_bm25_20251119` | | Claude Opus 4.5 (claude-opus… Beta Claude Developer Platform · in the page api/beta …ul intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"`… Agents Claude Developer Platform · in the page api/beta/agents …Powerful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model with… Archive Agent Claude Developer Platform · in the page api/beta/agents/archive …Powerful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model… Create Agent Claude Developer Platform · in the page api/beta/agents/create …Powerful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model with… List Agents Claude Developer Platform · in the page api/beta/agents/list …Powerful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model… Get Agent Claude Developer Platform · in the page api/beta/agents/retrieve …Powerful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model… Update Agent Claude Developer Platform · in the page api/beta/agents/update …Powerful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model with… Versions Claude Developer Platform · in the page api/beta/agents/versions …Powerful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model… List Agent Versions Claude Developer Platform · in the page api/beta/agents/versions/list …Powerful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model… Messages Claude Developer Platform · in the page api/beta/messages …ul intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"`… Batches Claude Developer Platform · in the page api/beta/messages/batches …ntelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"`… Create a Message Batch Claude Developer Platform · in the page api/beta/messages/batches/create …ntelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"`… Retrieve Message Batch results Claude Developer Platform · in the page api/beta/messages/batches/results …ntelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"`… Count tokens in a Message Claude Developer Platform · in the page api/beta/messages/count_tokens …ul intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"`… Create a Message Claude Developer Platform · in the page api/beta/messages/create …ul intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"`… Sessions Claude Developer Platform · in the page api/beta/sessions …werful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest… Archive Session Claude Developer Platform · in the page api/beta/sessions/archive …werful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest… Create Session Claude Developer Platform · in the page api/beta/sessions/create …werful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest… Events Claude Developer Platform · in the page api/beta/sessions/events …rful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` F… List Events Claude Developer Platform · in the page api/beta/sessions/events/list …rful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` F… Stream Events Claude Developer Platform · in the page api/beta/sessions/events/stream …rful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` F… List Sessions Claude Developer Platform · in the page api/beta/sessions/list …werful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest… Get Session Claude Developer Platform · in the page api/beta/sessions/retrieve …werful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest… Threads Claude Developer Platform · in the page api/beta/sessions/threads …rful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` F… Archive Session Thread Claude Developer Platform · in the page api/beta/sessions/threads/archive …rful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` F… Events Claude Developer Platform · in the page api/beta/sessions/threads/events …rful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` F… List Session Thread Events Claude Developer Platform · in the page api/beta/sessions/threads/events/list …rful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` F… Stream Session Thread Events Claude Developer Platform · in the page api/beta/sessions/threads/events/stream …rful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` F… List Session Threads Claude Developer Platform · in the page api/beta/sessions/threads/list …rful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` F… Get Session Thread Claude Developer Platform · in the page api/beta/sessions/threads/retrieve …rful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` F… Update Session Claude Developer Platform · in the page api/beta/sessions/update …werful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest… Completions Claude Developer Platform · in the page api/completions …Powerful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model with near-f… Create a Text Completion Claude Developer Platform · in the page api/completions/create …Powerful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model with near-f… Messages Claude Developer Platform · in the page api/messages …Powerful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model with near-f… Batches Claude Developer Platform · in the page api/messages/batches …Powerful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model… Create a Message Batch Claude Developer Platform · in the page api/messages/batches/create …Powerful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model… Retrieve Message Batch results Claude Developer Platform · in the page api/messages/batches/results …rful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` F… Count tokens in a Message Claude Developer Platform · in the page api/messages/count_tokens …Powerful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model with near-f… Create a Message Claude Developer Platform · in the page api/messages/create …Powerful intelligence for long-running agents and coding - `"claude-sonnet-4-6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model with near-f… claude-in-microsoft-foundry Claude Developer Platform · in the page build-with-claude/claude-in-microsoft-foundry …| ✓ | ✓ | | Claude Sonnet 4.6 | claude-sonnet-4-6 | | ✓ | | Claude Sonnet 4.5 | claude-sonnet-4-5 |… claude-on-amazon-bedrock-legacy Claude Developer Platform · in the page build-with-claude/claude-on-amazon-bedrock-legacy …| Yes | Yes | Yes | | Claude Sonnet 4.6 | anthropic.claude-sonnet-4-6 | Yes | Yes | Yes | Yes | No | | Claude Sonnet 4.5 | anthropic.claude-sonne… claude-on-vertex-ai Claude Developer Platform · in the page build-with-claude/claude-on-vertex-ai …| `claude-sonnet-5` | | Claude Sonnet 4.6 | claude-sonnet-4-6 | | Claude Sonnet 4.5 | claude-sonnet-4-5\@20250929 | | Claude Sonnet 4 Deprecated. | clau…