173 pages for haiku.
Titles and paths first, then pages whose text carries it. Each row opens that page as this site last read it.
Stream Session Thread Events
Claude Developer Platform · in the page
api/beta/sessions/threads/events/stream
…Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model with near-frontier intelligence - `"claude-haiku-4-5-20251001"`…
List Session Threads
Claude Developer Platform · in the page
api/beta/sessions/threads/list
…Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model with near-frontier intelligence - `"claude-haiku-4-5-20251001"`…
Get Session Thread
Claude Developer Platform · in the page
api/beta/sessions/threads/retrieve
…Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model with near-frontier intelligence - `"claude-haiku-4-5-20251001"`…
Update Session
Claude Developer Platform · in the page
api/beta/sessions/update
…Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model with near-frontier intelligence - `"claude-haiku-4-5-20251001"` Fas…
Completions
Claude Developer Platform · in the page
api/completions
…6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model with near-frontier intelligence - `"claude-haiku-4-5-20251001"` Fastest model with ne…
Create a Text Completion
Claude Developer Platform · in the page
api/completions/create
…6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model with near-frontier intelligence - `"claude-haiku-4-5-20251001"` Fastest model with ne…
Messages
Claude Developer Platform · in the page
api/messages
…6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model with near-frontier intelligence - `"claude-haiku-4-5-20251001"` Fastest model with ne…
Batches
Claude Developer Platform · in the page
api/messages/batches
…Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model with near-frontier intelligence - `"claude-haiku-4-5-20251001"` Fastest m…
Create a Message Batch
Claude Developer Platform · in the page
api/messages/batches/create
…Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model with near-frontier intelligence - `"claude-haiku-4-5-20251001"` Fastest m…
Retrieve Message Batch results
Claude Developer Platform · in the page
api/messages/batches/results
…Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model with near-frontier intelligence - `"claude-haiku-4-5-20251001"`…
Count tokens in a Message
Claude Developer Platform · in the page
api/messages/count_tokens
…6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model with near-frontier intelligence - `"claude-haiku-4-5-20251001"` Fastest model with ne…
Create a Message
Claude Developer Platform · in the page
api/messages/create
…6"` Best combination of speed and intelligence - `"claude-haiku-4-5"` Fastest model with near-frontier intelligence - `"claude-haiku-4-5-20251001"` Fastest model with ne…
rate-limits
Claude Developer Platform · in the page
api/rate-limits
…se cached tokens don't count toward your rate limit. <Note> Claude Haiku 3.5 (marked with footnote 4 in the following rate limit tables) also counts `cache_read_input_tokens` toward ITPM rate limit…
Message Batches API
Claude Developer Platform · in the page
build-with-claude/batch-processing
…laude/model-deprecations)) | $1.50 / MTok | $7.50 / MTok | | Claude Haiku 4.5 | $…
claude-in-amazon-bedrock
Claude Developer Platform · in the page
build-with-claude/claude-in-amazon-bedrock
…able 5, Claude Opus 4.8, Claude Sonnet 5, Claude Opus 4.7, and Claude Haiku 4.5 are open to all Amazon Bedrock customers. For any other model's current criteria, check [Amazon Bedrock model access](ht…
claude-in-microsoft-foundry
Claude Developer Platform · in the page
build-with-claude/claude-in-microsoft-foundry
…| | Model availability | The latest models in the Opus, Sonnet, and Haiku families | All Claude models available on Microsoft Foundry…
claude-on-amazon-bedrock-legacy
Claude Developer Platform · in the page
build-with-claude/claude-on-amazon-bedrock-legacy
…-20250514-v1:0` | Yes | Yes | Yes | No | Yes | | Claude Haiku 4.5 | `anthropic.claude-haiku-4-5-202510…
claude-on-vertex-ai
Claude Developer Platform · in the page
build-with-claude/claude-on-vertex-ai
…laude/model-deprecations)) | `claude-sonnet-4@20250514` | | Claude Haiku 4.5 | `claude-haiku-4-5@20251001` | | C…
claude-platform-on-aws
Claude Developer Platform · in the page
build-with-claude/claude-platform-on-aws
…de-sonnet-4-6` | | Claude Sonnet 4.5 | `claude-sonnet-4-5` | | Claude Haiku 4.5 | `claude-haiku-4-5` | Model IDs are identical to the first-party Claude API. There are no Bedrock-style ARNs or `ant…
context-editing
Claude Developer Platform · in the page
build-with-claude/context-editing
…aude Sonnet 4.6 and later | Claude Sonnet 4.5 and earlier | | Haiku | (none) | All models through Claude Haiku 4.5 | | Fable and Mythos | All models…
context-windows
Claude Developer Platform · in the page
build-with-claude/context-windows
…ike any other input tokens. On earlier Opus and Sonnet models and all Haiku models, the API automatically strips previous thinking blocks from the conversation history when you pass them back, which p…
extended-thinking
Claude Developer Platform · in the page
build-with-claude/extended-thinking
…ve"}` if you need reasoning between tool calls on this model. Claude Haiku 4.5 does not support interleaved thinking. On the Claude API, the beta header is accepted but ignored. Two more considerati…
handling-stop-reasons
Claude Developer Platform · in the page
build-with-claude/handling-stop-reasons
…aude/model-deprecations)), you can try updating your API calls to use Haiku 4.5 (`claude-haiku-4-5-20251001`), which has different usage restrictions. Learn more about [understanding Sonnet 4.5's API…
multilingual-support
Claude Developer Platform · in the page
build-with-claude/multilingual-support
…): | Language | Claude Sonnet 4.51 | Claude Haiku 4.51 | | --------------------------------- | ------------------ | ----------------- | | English (baseline, fixed to 100%) |…
preserved-thinking
Claude Developer Platform · in the page
build-with-claude/preserved-thinking
…eads thinking blocks from Claude Opus 5 and earlier Opus, Sonnet, and Haiku models, but not from Claude Fable or Claude Mythos models. On the Claude API, Claude Fable 5.1 and Claude Mythos 5.1 read th…
Request 2 caches its request content (not the response)
Claude Developer Platform · in the page
build-with-claude/prompt-caching
…$6 / MTok | $0.30 / MTok | $15 / MTok | | Claude Haiku 4.5 | $…
claude-prompting-best-practices
Claude Developer Platform · in the page
build-with-claude/prompt-engineering/claude-prompting-best-practices
….6, Claude Sonnet 5.5, Claude Sonnet 5, Claude Sonnet 4.6, and Claude Haiku 4.5. The page is organized in three parts: * **[Model-specific guidance](https://platform.claude.com/docs/en/build-with-cla…
search-results
Claude Developer Platform · in the page
build-with-claude/search-results
…) support search results with citations, with the exception of Claude Haiku 3. No beta header is required: search results are part of the standard Messages API. ## How it works Search results can be…
structured-outputs
Claude Developer Platform · in the page
build-with-claude/structured-outputs
…laude-sonnet-4-5-20250929 - claude-opus-4-5-20251101 - claude-haiku-4-5-20251001 supportedPlatforms: Claude API: ga Claude Platform on AWS: ga Amazon Bedrock: availability:…
task-budgets
Claude Developer Platform · in the page
build-with-claude/task-budgets
…e Sonnet 4.6 | Not supported | | Claude Haiku 4.5 | Not supported | Task budgets are not supported on [Claude Code](https://code.claude.co…
thinking
Claude Developer Platform · in the page
build-with-claude/thinking
…| Thinking off | | Claude Haiku 4.5 | Thinking off | 400 error | Extended thinking | 400 error…
thinking-troubleshooting
Claude Developer Platform · in the page
build-with-claude/thinking-troubleshooting
…| Off | `"adaptive"` | | Claude Haiku 4.5 | Extended only | Off | `"adaptive"` | | Claude Sonnet 4.5 | Extended on…
vision
Claude Developer Platform · in the page
build-with-claude/vision
…del](https://claude.com/pricing) you're using. For example, at Claude Haiku 4.5's $1 USD per million input tokens (standard tier), the 1000×1000 image costs about $1.30 USD per thousand images. At Cla…
API usage primer for Claude
Claude Developer Platform · in the page
claude_api_primer
…aude Sonnet 5: claude-sonnet-5 For fast, cost-effective tasks: Claude Haiku 4.5: claude-haiku-4-5-20251001 ``` ## Calling the API ### Basic request and response <CodeGroup exclude="shell:cURL, type…
home
Claude Developer Platform · in the page
home
…telligence* — Everyday tasks · Writing · Cost-efficient * [Claude Haiku 4.5](https://platform.claude.com/docs/en/models/haiku-4-5/overview) (`claude-haiku-4-5`) — *The fastest model with near-fron…
intro
Claude Developer Platform · in the page
intro
…d intelligence* — Everyday tasks · Writing · Cost-efficient * [Claude Haiku 4.5](https://platform.claude.com/docs/en/models/haiku-4-5/overview) (`claude-haiku-4-5`) — *The fastest model with near-fron…
data-residency
Claude Developer Platform · in the page
manage-claude/data-residency
…ts with `inference_geo` on Claude Opus 4.5, Claude Sonnet 4.5, Claude Haiku 4.5, or earlier models return a 400 error. <Note> The `inference_geo` parameter is available on the Claude API (first-par…
events-and-streaming
Claude Developer Platform · in the page
managed-agents/events-and-streaming
…anagedAgentsTextBlockType.Text, Text = "Write a haiku about event streams.", }, ], }, ], }); // Accumulate preview fragments…
multiagent-orchestration
Claude Developer Platform · in the page
managed-agents/multiagent-orchestration
…```markdown --- name: reviewer model: claude-haiku-4-5 --- You are a code reviewer. ``` </File> <File filename="test-writer.md"> ```markdown…
overview
Claude Developer Platform · in the page
models/fable-5-1/overview
…Adaptive | `high` | Jun 2026 | | [Claude Haiku 4.5](https://platform.claude.com/docs/en/models/haiku-4-5/overview) | 200K | 64K | $1 / $5 | Fastest | Ext…
overview
Claude Developer Platform · in the page
models/fable-5/overview
…Adaptive | `high` | Jun 2026 | | [Claude Haiku 4.5](https://platform.claude.com/docs/en/models/haiku-4-5/overview) | 200K | 64K | $1 / $5 | Extended…
overview
Claude Developer Platform · in the page
models/mythos-5-1/overview
…Adaptive | `high` | Jun 2026 | | [Claude Haiku 4.5](https://platform.claude.com/docs/en/models/haiku-4-5/overview) | 200K | 64K | $1 / $5 | Fastest | Ext…
overview
Claude Developer Platform · in the page
models/mythos-5/overview
…Adaptive | `high` | Jun 2026 | | [Claude Haiku 4.5](https://platform.claude.com/docs/en/models/haiku-4-5/overview) | 200K | 64K | $1 / $5 | Extended…
overview
Claude Developer Platform · in the page
models/opus-4-5/overview
…Adaptive | `high` | Jun 2026 | | [Claude Haiku 4.5](https://platform.claude.com/docs/en/models/haiku-4-5/overview) | 200K | 64K | $1 / $5 | Extended…
overview
Claude Developer Platform · in the page
models/opus-4-6/overview
…| `high` | Jun 2026 | | [Claude Haiku 4.5](https://platform.claude.com/docs/en/models/haiku-4-5/overview) | 200K | 64K | $1 / $5 | Extended…
overview
Claude Developer Platform · in the page
models/opus-4-7/overview
…Adaptive | `high` | Jun 2026 | | [Claude Haiku 4.5](https://platform.claude.com/docs/en/models/haiku-4-5/overview) | 200K | 64K | $1 / $5 | Extended…
overview
Claude Developer Platform · in the page
models/opus-4-8/overview
…Adaptive | `high` | Jun 2026 | | [Claude Haiku 4.5](https://platform.claude.com/docs/en/models/haiku-4-5/overview) | 200K | 64K | $1 / $5 | Extended…
migration-guide
Claude Developer Platform · in the page
models/opus-5-5/migration-guide
…tself reads thinking from Claude Opus 5 and earlier Opus, Sonnet, and Haiku models, but not from Claude Fable or Claude Mythos models. * Read content blocks by `type`, and pass `thinking` blocks back…
overview
Claude Developer Platform · in the page
models/opus-5-5/overview
…Adaptive | `high` | Jun 2026 | | [Claude Haiku 4.5](https://platform.claude.com/docs/en/models/haiku-4-5/overview) | 200K | 64K | $1 / $5 | Fastest | Ext…
whats-new-opus-5-5
Claude Developer Platform · in the page
models/opus-5-5/whats-new-opus-5-5
…eads thinking blocks from Claude Opus 5 and earlier Opus, Sonnet, and Haiku models, but not from Claude Fable or Claude Mythos models. On the Claude API, Claude Fable 5.1 and Claude Mythos 5.1 read th…