Claude Fable 5.1

Chat Completions API

claude-fable-5.1

от

AnthropicСоздана 1 сент. 2026 г.1M контекст

Chat Completions API

Claude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work: long code refactors, front-end and visual code generation, and finance and analysis tasks in particular. It also tends to be more concise than Fable 5 in its plans and summaries. We recommend testing it as a direct upgrade wherever you use Fable 5 today, and alongside Opus 5 on reasoning-heavy tasks.

Сравнить Открыть в Плейграунде

Здесь собран публичный контракт интеграции модели: поддерживаемые API-методы, параметры запросов и примеры вызовов.

Chat Completions APIPOST/v1/chat/completions

curl https://api.makura.ai/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  --data-raw '{
  "model": "claude-fable-5.1",
  "messages": [
    {
      "role": "user",
      "content": "Сколько будет 2 + 2?"
    }
  ]
}'

Max Completion TokensReasoning EffortResponse FormatTool ChoiceTools

Claude Fable 5.1

API-методы и структура запроса

Пример кода

Параметры