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Claude Fable 5.1: AI 大语言模型

使用 Claude Fable 5.1 生成文本。Anthropic 旗舰模型，支持自适应思考和 1M 上下文。免费试用，按次生成付费，无需订阅。 Claude Fable 5.1 是Anthropic's newest flagship model, built for long-horizon agentic coding, multistep research, and document, spreadsheet, and slide work. It runs with adaptive extended thinking always enabled (steerable via effort, from low up to max) and a 1 million token context window with up to 128K tokens of output. It accepts both text and image inputs — charts, tables, PDFs, and screenshots — for multimodal analysis, and 是a step up in reasoning depth from the earlier Claude Fable 5. 按 token 计费： $10.00 每百万输入 token 收费 $50.00 每百万输出 token 收费。

交互式模型控制

使用 Claude Fable 5.1 生成文本。Anthropic 旗舰模型，支持自适应思考和 1M 上下文。免费试用，按次生成付费，无需订阅。

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概览

关于此模型

Claude Fable 5.1 是Anthropic's newest flagship model, built for long-horizon agentic coding, multistep research, and document, spreadsheet, and slide work. It runs with adaptive extended thinking always enabled (steerable via effort, from low up to max) and a 1 million token context window with up to 128K tokens of output. It accepts both text and image inputs — charts, tables, PDFs, and screenshots — for multimodal analysis, and 是a step up in reasoning depth from the earlier Claude Fable 5. 按 token 计费： $10.00 每百万输入 token 收费 $50.00 每百万输出 token 收费。

1Agentic Coding: Plan and execute long-horizon coding tasks that span many files, tools, and steps without losing track of the goal.
2Multistep Research: Chain together searches, document reads, and analysis across a 1M-token context without re-summarizing earlier steps.
3Document & Spreadsheet Work: Read and reason over long PDFs, spreadsheets, and slide decks, including scanned pages and screenshots.
4Scientific Analysis: Work through multi-step scientific or technical problems that benefit from always-on extended thinking.
5Multimodal Analysis: Combine image and text inputs to extract insights from charts, tables, diagrams, and screenshots.
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价格与价值

成本分析

muapiapp$10.00/M input tokens, $50.00/M output tokens

Token-based billing at Anthropic's official published rate. Minimum $0.0008 per call.

Fal.ai暂不可用

Claude Fable 5.1 是not available on Fal.ai.

Replicate暂不可用

Claude Fable 5.1 是not available on Replicate.

** 竞品价格根据相似模型架构和使用层级估算。

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技术详情

配置参数

提示词string

用户消息或指令。

默认值Explain quantum entanglement in simple terms.
图像 URLstring

多模态请求的可选图像 URL。

默认值undefined
系统提示词string

可选的系统级指令，用于引导模型行为。

默认值You are a concise and precise assistant.
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实施指南

开发者文档

标准（异步）

POST /api/v1/claude-fable-5-1 — returns request_id, poll for the result via /api/v1/predictions/{id}/result.

curl -X POST https://api.muapi.ai/api/v1/claude-fable-5-1 \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "Summarize the key risks in this quarterly report and list follow-up questions.",
    "image_url": "https://example.com/report-page-1.png",
    "system_prompt": "You are a meticulous financial analyst."
  }'

流式传输（SSE）

POST /api/v1/claude-fable-5-1/stream — returns a live Server-Sent Events stream (Content-Type: text/event-stream). 每个chunk has the format data: {"choices":[{"delta":{"content":"text"}}]}, ending with data: [DONE].

See Streaming Documentation for full code examples.

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常见问题

常见问答

What 是Claude Fable 5.1?

Claude Fable 5.1 是Anthropic's newest flagship language model, built for long-horizon agentic coding, multistep research, and document, spreadsheet, and slide analysis, with a 1M-token context window and always-on adaptive extended thinking.

如何计算价格？

按 token 计费： $10.00 每百万输入 token 收费 $50.00 每百万输出 token 收费。 每次调用最低收费为 $0.0008. 每次调用后会根据模型返回的 token 数量扣除实际费用。

What 是the difference between /claude-fable-5-1 and /claude-fable-5-1/stream?

/claude-fable-5-1 是async — you receive a request_id and poll for the result. /claude-fable-5-1/stream returns a live SSE stream. 使用 streaming for chat UIs; use the async endpoint for workflows and automation.

Does Claude Fable 5.1 support images?

可以。 Pass an image_url in the request body to include an image — such as a chart, table, PDF page, or screenshot — as part of the user message for multimodal analysis.

How 是Claude Fable 5.1 different from Claude Fable 5?

Claude Fable 5.1 adds a larger 1M-token context window, always-on adaptive extended thinking (steerable via effort), and stronger long-horizon agentic and research performance compared to [Claude Fable 5](/playground/claude-fable-5).

Can I control how much the model 'thinks' before responding?

Extended thinking 是always enabled and cannot be turned off, but its depth 是adaptive to the task — harder, multistep requests automatically get more reasoning effort.