---
title: Claude Fable 5
url: https://platform.claude.com/docs/es/models/fable-5/overview
description: "Referencia de Claude Fable 5: estado del ciclo de vida, IDs del modelo en cada plataforma, ventana de contexto, límites de salida, precios y recursos de migración. Claude Fable 5 es un modelo heredado, y Claude Fable 5.1 es el modelo Fable actual."
---
**Legacy.** Released June 9, 2026.
Although Claude Fable 5 is still available, you should consider migrating to Claude Fable 5.1. [See Claude Fable 5.1](https://platform.claude.com/docs/es/models/fable-5-1/overview) · [Migrate to Claude Fable 5.1](https://platform.claude.com/docs/es/models/fable-5-1/migration-guide#migrating-from-claude-fable-5-to-claude-fable-5-1)
Model ID: `claude-fable-5`
Context window: 1M tokens · Max output: 128K tokens · Input pricing: $10 / MTok · Output pricing: $50 / MTok
[Announcement](https://www.anthropic.com/news/claude-fable-5-mythos-5)
## Fable vs. Mythos
[Claude Mythos 5](https://platform.claude.com/docs/es/models/mythos-5/overview) se ofrece por separado para flujos de trabajo de ciberseguridad defensiva y está disponible solo para organizaciones verificadas a través de los programas de verificación de Anthropic, como el [Cyber Verification Program](https://support.claude.com/en/articles/14604842). Comparte las especificaciones y los precios de Claude Fable 5.
## Cómo se compara con la línea actual
| Model | Context | Max output | Price / MTok | Thinking | Default effort | Knowledge cutoff |
| :---------------------------------------------------------------------------------- | :------ | :--------- | :----------------- | :------------------- | :------------- | :--------------- |
| [Claude Fable 5.1](https://platform.claude.com/docs/es/models/fable-5-1/overview) | 1M | 128K | $10 / $50 | Adaptive (always on) | `high` | Jun 2026 |
| **Claude Fable 5** (this model) | 1M | 128K | $10 / $50 | Adaptive (always on) | `high` | Jan 2026 |
| [Claude Opus 5.5](https://platform.claude.com/docs/es/models/opus-5-5/overview) | 1M | 128K | $4 / $20 | Adaptive (always on) | `medium` | Jun 2026 |
| [Claude Sonnet 5.5](https://platform.claude.com/docs/es/models/sonnet-5-5/overview) | 1M | 128K | $2 / $10 | Adaptive | `high` | Jun 2026 |
| [Claude Haiku 5.5](https://platform.claude.com/docs/es/models/haiku-5-5/overview) | 1M | 128K | From $0.10 / $0.50 | Adaptive | `medium` | Jun 2026 |
* **Context:** 1M tokens is roughly 555k words or 2.5M Unicode characters on the current tokenizer (introduced with Claude Opus 4.7); models before it fit about 750k words in 1M tokens. 200k tokens is roughly 150k words.
* **Max output:** Synchronous Messages API limit. On the Message Batches API, Claude Opus 5.5, Claude Opus 5, Claude Sonnet 5.5, Claude Sonnet 5, Claude Haiku 5.5, Claude Opus 4.8, Claude Opus 4.7, Claude Opus 4.6, and Claude Sonnet 4.6 support up to 300k output tokens with the output-300k-2026-03-24 beta header.
* **Price / MTok:** Input / output, base price per million tokens. Batch API requests are 50% off; prompt caching reads cost 10% of the base input price (2.5% on Claude Fable 5.1 and Claude Mythos 5.1, 5% on Claude Opus 5.5 and Claude Sonnet 5.5). See Pricing for the full list.
* **Thinking:** Adaptive thinking lets the model decide how much to think, steered by effort. Extended thinking is the manual budget\_tokens mode on earlier models.
* **Default effort:** The effort parameter’s default on the Claude API. Models without a value don’t support the parameter.
* **Knowledge cutoff:** Reliable knowledge cutoff: the date through which the model’s knowledge is most extensive and reliable.
## Especificaciones
### Model IDs
| Platform | Model ID |
| :----------------------------------------------------------------------------------------------------- | :------------------------- |
| Claude API | `claude-fable-5` |
| [Amazon Bedrock](https://platform.claude.com/docs/es/build-with-claude/claude-in-amazon-bedrock) | `anthropic.claude-fable-5` |
| [Google Cloud](https://platform.claude.com/docs/es/build-with-claude/claude-on-vertex-ai) | `claude-fable-5` |
| [Microsoft Foundry](https://platform.claude.com/docs/es/build-with-claude/claude-in-microsoft-foundry) | `claude-fable-5` |
| [Claude Platform on AWS](https://platform.claude.com/docs/es/build-with-claude/claude-platform-on-aws) | `claude-fable-5` |
### Pricing
| Feature | Value |
| :------------------------------------------------------------------------------------- | :------------------------------- |
| Input | $10 / MTok |
| Output | $50 / MTok |
| [5m cache write](https://platform.claude.com/docs/es/build-with-claude/prompt-caching) | $12.50 / MTok |
| [1h cache write](https://platform.claude.com/docs/es/build-with-claude/prompt-caching) | $20 / MTok |
| [Cache read](https://platform.claude.com/docs/es/build-with-claude/prompt-caching) | $1 / MTok |
| [Batch API](https://platform.claude.com/docs/es/build-with-claude/batch-processing) | 50% discount on input and output |
[Full price list](https://platform.claude.com/docs/es/about-claude/pricing)
### Capabilities
| Feature | Value |
| :-------------------------------------------------------------------------------------- | :--------------------- |
| [Context window](https://platform.claude.com/docs/es/build-with-claude/context-windows) | 1M tokens |
| Max output | 128K tokens |
| [Thinking](https://platform.claude.com/docs/es/build-with-claude/thinking) | Adaptive (always on) |
| [Default effort](https://platform.claude.com/docs/es/build-with-claude/effort) | `high` |
| Input → output | Text and images → text |
| Reliable knowledge cutoff | Jan 2026 |
| Training data cutoff | Jan 2026 |
### Availability
| Feature | Value |
| :---------------------------------------------------------------------------- | :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [Status](https://platform.claude.com/docs/es/about-claude/model-deprecations) | Active (legacy) |
| Released | June 9, 2026 |
| Retirement | Not sooner than June 9, 2027 |
| Platforms | Claude API, [Amazon Bedrock](https://platform.claude.com/docs/es/build-with-claude/claude-in-amazon-bedrock), [Google Cloud](https://platform.claude.com/docs/es/build-with-claude/claude-on-vertex-ai), [Microsoft Foundry](https://platform.claude.com/docs/es/build-with-claude/claude-in-microsoft-foundry), [Claude Platform on AWS](https://platform.claude.com/docs/es/build-with-claude/claude-platform-on-aws) |
## Recursos
Qué cambia al pasar de Claude Fable 5 a Claude Fable 5.1.
El modelo Fable actual: descripción general, especificaciones y recursos.
Guía de prompts específica del modelo para trabajo agéntico y de largo horizonte.
Maneja los rechazos de los clasificadores y reintenta con otro modelo Claude usando el parámetro `fallbacks`.
## Referencia
La "system prompt" (indicación del sistema) que Claude Fable 5 usa en claude.ai y en las aplicaciones de Claude.
Evaluaciones de seguridad y decisiones de despliegue para Claude Fable 5 y Claude Mythos 5.
Lista completa de precios, incluidos los descuentos por lotes y las tarifas de "prompt caching" (almacenamiento en caché de prompts).
Cómo funcionan los IDs de modelos, los alias y las instantáneas fijadas.
Estado del ciclo de vida y compromisos de retiro para cada modelo Claude.