346 pages for sonnet.

prompting-claude-sonnet-5 Claude Developer Platform · title build-with-claude/prompt-engineering/prompting-claude-sonnet-5 prompting-claude-sonnet-5-5 Claude Developer Platform · title build-with-claude/prompt-engineering/prompting-claude-sonnet-5-5 whats-new-sonnet-5-5 Claude Developer Platform · title models/sonnet-5-5/whats-new-sonnet-5-5 claude-sonnet-3-5 Claude Developer Platform · title release-notes/system-prompts/claude-sonnet-3-5 claude-sonnet-3-7 Claude Developer Platform · title release-notes/system-prompts/claude-sonnet-3-7 claude-sonnet-4 Claude Developer Platform · title release-notes/system-prompts/claude-sonnet-4 claude-sonnet-4-5 Claude Developer Platform · title release-notes/system-prompts/claude-sonnet-4-5 claude-sonnet-4-6 Claude Developer Platform · title release-notes/system-prompts/claude-sonnet-4-6 claude-sonnet-5 Claude Developer Platform · title release-notes/system-prompts/claude-sonnet-5 claude-sonnet-5-5 Claude Developer Platform · title release-notes/system-prompts/claude-sonnet-5-5 overview Claude Developer Platform · path models/sonnet-4-5/overview overview Claude Developer Platform · path models/sonnet-4-6/overview migration-guide Claude Developer Platform · path models/sonnet-5-5/migration-guide overview Claude Developer Platform · path models/sonnet-5-5/overview overview Claude Developer Platform · path models/sonnet-5/overview model-deprecations Claude Developer Platform · in the page about-claude/model-deprecations …| April 14, 2026 | June 15, 2026 | | claude-sonnet-5-5 | Active | N/A | Not sooner than September 28, 2027 | | claude-sonnet-5 | Act… choosing-a-model Claude Developer Platform · in the page about-claude/models/choosing-a-model …els. On Claude Fable 5.2, Claude Fable 5.1, Claude Opus 5, and Claude Sonnet 5.5, start with the default (`high`) and adjust up or down based on your evals. On Claude Opus 5.5 and Claude Haiku 5.5, th… Or, for the model with the same capabilities and no access approval requirement: Claude Developer Platform · in the page about-claude/models/migration-guide …with no date suffix, the same scheme as `claude-opus-4-8` and `claude-sonnet-5`. #### Breaking changes 1. **Thinking on by default:** On Claude Opus 4.8, requests without a `thinking` field run with… model-ids-and-versions Claude Developer Platform · in the page about-claude/models/model-ids-and-versions …e-{name}-{major}[-{minor}] ``` Major-version releases such as Claude Sonnet 5 and Claude Opus 5 omit the minor segment. For example: `claude-sonnet-4-6`, `claude-sonnet-5`, `claude-opus-4-6`, `claud… optimizing-for-cost-and-intelligence Claude Developer Platform · in the page about-claude/models/optimizing-for-cost-and-intelligence …osts about a tenth as much (a twentieth on Claude Opus 5.5 and Claude Sonnet 5.5, a fortieth on Claude Fable 5.2, Claude Mythos 5.2, Claude Fable 5.1, and Claude Mythos 5.1) and processes faster. * Th… pricing Claude Developer Platform · in the page about-claude/pricing …k | $1.50 / MTok | $75 / MTok | | Claude Sonnet 5.5… ticket-routing Claude Developer Platform · in the page about-claude/use-case-guides/ticket-routing …intent categories, or complex reasoning, you may opt for the [larger Sonnet model](https://platform.claude.com/docs/en/models/overview). ### Build a strong prompt Ticket routing is a type of classi… PDF Processing Claude Developer Platform · in the page agents-and-tools/agent-skills/best-practices …fast, economical): Does the Skill provide enough guidance? * **Claude Sonnet** (balanced): Is the Skill clear and efficient? * **Claude Opus** (powerful reasoning): Does the Skill avoid over-explainin… claude-api-skill Claude Developer Platform · in the page agents-and-tools/agent-skills/claude-api-skill …odels/opus-5-5/migration-guide#migrating-from-claude-opus-5), [Claude Sonnet 5.5](https://platform.claude.com/docs/en/models/sonnet-5-5/migration-guide#migrating-from-claude-sonnet-5), [Claude Haiku 5… enterprise Claude Developer Platform · in the page agents-and-tools/agent-skills/enterprise …ses. Require testing across the models your organization uses (Haiku, Sonnet, Opus), because Skill effectiveness varies by model. For detailed guidance on building evaluations, see [evaluation and it… PDF Processing Claude Developer Platform · in the page agents-and-tools/agent-skills/overview …mythos-preview - claude-opus-5-5 - claude-opus-5 - claude-sonnet-5-5 - claude-sonnet-5 - claude-haiku-5-5 - claude-haiku-4-5-20251001 - claude-opus-4-8 - claude-opus-4-… mcp-connector Claude Developer Platform · in the page agents-and-tools/mcp-connector …mythos-preview - claude-opus-5-5 - claude-opus-5 - claude-sonnet-5-5 - claude-sonnet-5 - claude-haiku-5-5 - claude-haiku-4-5-20251001 - claude-opus-4-8 - claude-opus-4-… overview Claude Developer Platform · in the page agents-and-tools/mcp-tunnels/overview …mythos-preview - claude-opus-5-5 - claude-opus-5 - claude-sonnet-5-5 - claude-sonnet-5 - claude-haiku-5-5 - claude-haiku-4-5-20251001 - claude-opus-4-8 - claude-opus-4-… advisor-tool Claude Developer Platform · in the page agents-and-tools/tool-use/advisor-tool …mythos-preview - claude-opus-5-5 - claude-opus-5 - claude-sonnet-5-5 - claude-sonnet-5 - claude-haiku-5-5 - claude-haiku-4-5-20251001 - claude-opus-4-8 - claude-opus-4-… bash-tool Claude Developer Platform · in the page agents-and-tools/tool-use/bash-tool …mythos-preview - claude-opus-5-5 - claude-opus-5 - claude-sonnet-5-5 - claude-sonnet-5 - claude-haiku-5-5 - claude-haiku-4-5-20251001 - claude-opus-4-8 - claude-opus-4-… browser-use-sdk Claude Developer Platform · in the page agents-and-tools/tool-use/browser-use-sdk …mythos-preview - claude-opus-5-5 - claude-opus-5 - claude-sonnet-5-5 - claude-sonnet-5 - claude-haiku-5-5 - claude-opus-4-8 supportedPlatforms: Claude API: beta Amazo… browser-use-tool Claude Developer Platform · in the page agents-and-tools/tool-use/browser-use-tool …mythos-preview - claude-opus-5-5 - claude-opus-5 - claude-sonnet-5-5 - claude-sonnet-5 - claude-haiku-5-5 - claude-opus-4-8 supportedPlatforms: Claude API: stable Ama… code-execution-tool Claude Developer Platform · in the page agents-and-tools/tool-use/code-execution-tool …mythos-preview - claude-opus-5-5 - claude-opus-5 - claude-sonnet-5-5 - claude-sonnet-5 - claude-haiku-5-5 - claude-haiku-4-5-20251001 - claude-opus-4-8 - claude-opus-4-… computer-use-tool Claude Developer Platform · in the page agents-and-tools/tool-use/computer-use-tool …mythos-preview - claude-opus-5-5 - claude-opus-5 - claude-sonnet-5-5 - claude-sonnet-5 - claude-haiku-5-5 - claude-haiku-4-5-20251001 - claude-opus-4-8 - claude-opus-4-… define-tools Claude Developer Platform · in the page agents-and-tools/tool-use/define-tools …mythos-preview - claude-opus-5-5 - claude-opus-5 - claude-sonnet-5-5 - claude-sonnet-5 - claude-haiku-5-5 - claude-haiku-4-5-20251001 - claude-opus-4-8 - claude-opus-4-… fine-grained-tool-streaming Claude Developer Platform · in the page agents-and-tools/tool-use/fine-grained-tool-streaming …mythos-preview - claude-opus-5-5 - claude-opus-5 - claude-sonnet-5-5 - claude-sonnet-5 - claude-haiku-5-5 - claude-haiku-4-5-20251001 - claude-opus-4-8 - claude-opus-4-… memory-tool Claude Developer Platform · in the page agents-and-tools/tool-use/memory-tool …mythos-preview - claude-opus-5-5 - claude-opus-5 - claude-sonnet-5-5 - claude-sonnet-5 - claude-haiku-5-5 - claude-haiku-4-5-20251001 - claude-opus-4-8 - claude-opus-4-… overview Claude Developer Platform · in the page agents-and-tools/tool-use/overview …ikely to recognize that a parameter is missing and ask for it. Claude Sonnet might ask, especially when prompted to think before outputting a tool request. But it might also infer a reasonable value.… parallel-tool-use Claude Developer Platform · in the page agents-and-tools/tool-use/parallel-tool-use …mythos-preview - claude-opus-5-5 - claude-opus-5 - claude-sonnet-5-5 - claude-sonnet-5 - claude-haiku-5-5 - claude-haiku-4-5-20251001 - claude-opus-4-8 - claude-opus-4-… Process results programmatically Claude Developer Platform · in the page agents-and-tools/tool-use/programmatic-tool-calling …mythos-preview - claude-opus-5-5 - claude-opus-5 - claude-sonnet-5-5 - claude-sonnet-5 - claude-haiku-5-5 - claude-opus-4-8 - claude-opus-4-7 - claude-opus-4-6 - cl… strict-tool-use Claude Developer Platform · in the page agents-and-tools/tool-use/strict-tool-use …mythos-preview - claude-opus-5-5 - claude-opus-5 - claude-sonnet-5-5 - claude-sonnet-5 - claude-haiku-5-5 - claude-haiku-4-5-20251001 - claude-opus-4-8 - claude-opus-4-… text-editor-tool Claude Developer Platform · in the page agents-and-tools/tool-use/text-editor-tool …mythos-preview - claude-opus-5-5 - claude-opus-5 - claude-sonnet-5-5 - claude-sonnet-5 - claude-haiku-5-5 - claude-haiku-4-5-20251001 - claude-opus-4-8 - claude-opus-4-… Log at info level Claude Developer Platform · in the page agents-and-tools/tool-use/tool-runner …mythos-preview - claude-opus-5-5 - claude-opus-5 - claude-sonnet-5-5 - claude-sonnet-5 - claude-haiku-5-5 - claude-haiku-4-5-20251001 - claude-opus-4-8 - claude-opus-4-… tool-search-tool Claude Developer Platform · in the page agents-and-tools/tool-use/tool-search-tool …mythos-preview - claude-opus-5-5 - claude-opus-5 - claude-sonnet-5-5 - claude-sonnet-5 - claude-haiku-5-5 - claude-haiku-4-5-20251001 - claude-opus-4-8 - claude-opus-4-… web-fetch-tool Claude Developer Platform · in the page agents-and-tools/tool-use/web-fetch-tool …mythos-preview - claude-opus-5-5 - claude-opus-5 - claude-sonnet-5-5 - claude-sonnet-5 - claude-haiku-5-5 - claude-haiku-4-5-20251001 - claude-opus-4-8 - claude-opus-4-… web-search-tool Claude Developer Platform · in the page agents-and-tools/tool-use/web-search-tool …mythos-preview - claude-opus-5-5 - claude-opus-5 - claude-sonnet-5-5 - claude-sonnet-5 - claude-haiku-5-5 - claude-haiku-4-5-20251001 - claude-opus-4-8 - claude-opus-4-… Beta Claude Developer Platform · in the page api/beta …no line; do not infer a line from the `id`. - `"haiku"` - `"sonnet"` - `"opus"` - `"fable"` - `"mythos"` - `max_input_tokens: number or null` Maximum input context win… Agents Claude Developer Platform · in the page api/beta/agents …agedAgentsModel = "claude-fable-5-2" or "claude-haiku-5-5" or "claude-sonnet-5-5" or 15 more or string` The model that will power your agent. See [models](https://docs.anthropic.com/en/docs/… Archive Agent Claude Developer Platform · in the page api/beta/agents/archive …Fastest model for high-volume, real-time tasks - `"claude-sonnet-5-5"` Efficient model for coding and agents - `"claude-opus-5-5"` Powerful intelligence for coding… Create Agent Claude Developer Platform · in the page api/beta/agents/create …agedAgentsModel = "claude-fable-5-2" or "claude-haiku-5-5" or "claude-sonnet-5-5" or 15 more or string` The model that will power your agent. See [models](https://docs.anthropic.com/en/docs/…