Claude Fable 5.1

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.

ChatAnthropic1M tokens$10.9006 / $54.503 · 1M

anthropic/claude-fable-5.1

Contexto
1M tokens
Máx. completion
128,000
Tools
Sí
JSON
Sí
Lanzamiento
2026-09-01

Llámalo desde Geek Hub

El mismo SDK de OpenAI. Cambia el base URL y el id del modelo.

curl https://api.geekhub.mx/v1/chat/completions \
  -H "Authorization: Bearer $GEEKHUB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "anthropic/claude-fable-5.1",
    "messages": [{"role": "user", "content": "Hola"}]
  }'
Consigue tu API key

Preguntas frecuentes

¿Qué es Claude Fable 5.1?
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. Claude Fable 5.1 corre en el API de Geek Hub (compatible con OpenAI). Id: anthropic/claude-fable-5.1.
¿Claude Fable 5.1 es gratis?
No. El input cuesta $10.9006 / 1M tokens y el output $54.503 / 1M tokens en Geek Hub (markup incluido).
¿Cuál es el contexto de Claude Fable 5.1?
Claude Fable 5.1 tiene una ventana de 1M tokens. Soporta hasta 128,000 tokens de completion.
¿Claude Fable 5.1 soporta tool calling y structured outputs?
Claude Fable 5.1 acepta tools y tool_choice para function calling. También soporta structured outputs con un JSON schema en response_format.
¿Cuándo se lanzó Claude Fable 5.1?
Claude Fable 5.1 se lanzó el 1 de septiembre de 2026.

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