Claude Haiku 4.5 is Anthropic’s fastest and most efficient model, delivering near-frontier intelligence at a fraction of the cost and latency of larger Claude models. Matching Claude Sonnet 4’s performance across reasoning, coding, and computer-use tasks, Haiku 4.5 brings frontier-level capability to real-time and high-volume applications. It introduces extended thinking to the Haiku line; enabling controllable reasoning depth, summarized or interleaved thought output, and tool-assisted workflows with full support for coding, bash, web search, and computer-use tools. Scoring >73% on SWE-bench Verified, Haiku 4.5 ranks among the world’s best coding models while maintaining exceptional responsiveness for sub-agents, parallelized execution, and scaled deployment.
所有提供方：为该模型提供服务的每个上游都支持。部分提供方：取决于处理请求的上游。默认值：未设置时发送的值。
| 参数 | 提供方 | 默认值 |
|---|---|---|
| frequency_penalty | 部分提供方 | 默认不发送 |
| include_reasoning | 所有提供方 | - |
| max_completion_tokens | 部分提供方 | - |
| max_tokens | 所有提供方 | - |
| presence_penalty | 部分提供方 | 默认不发送 |
| reasoning | 所有提供方 | - |
| repetition_penalty | 部分提供方 | 默认不发送 |
| response_format | 部分提供方 | - |
| stop | 部分提供方 | - |
| structured_outputs | 部分提供方 | - |
| temperature | 所有提供方 | 默认不发送 |
| tool_choice | 所有提供方 | - |
| tools | 所有提供方 | - |
| top_k | 所有提供方 | 默认不发送 |
| top_p | 所有提供方 | 默认不发送 |
