---
title: Claude Fable 5
url: https://platform.claude.com/docs/pt-BR/models/fable-5/overview
description: "Referência do Claude Fable 5: status do ciclo de vida, IDs de modelo em todas as plataformas, janela de contexto, limites de saída, preços e recursos de migração. Claude Fable 5 é um modelo legado, e Claude Fable 5.1 é o modelo Fable atual."
---
**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/pt-BR/models/fable-5-1/overview) · [Migrate to Claude Fable 5.1](https://platform.claude.com/docs/pt-BR/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
O [Claude Mythos 5](https://platform.claude.com/docs/pt-BR/models/mythos-5/overview) é oferecido separadamente para fluxos de trabalho de cibersegurança defensiva e está disponível apenas para organizações verificadas por meio dos programas de verificação da Anthropic, como o [Cyber Verification Program](https://support.claude.com/en/articles/14604842). Ele compartilha as especificações e os preços do Claude Fable 5.
## Como ele se compara à linha atual
| Model | Context | Max output | Price / MTok | Thinking | Default effort | Knowledge cutoff |
| :------------------------------------------------------------------------------------- | :------ | :--------- | :----------------- | :------------------- | :------------- | :--------------- |
| [Claude Fable 5.1](https://platform.claude.com/docs/pt-BR/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/pt-BR/models/opus-5-5/overview) | 1M | 128K | $4 / $20 | Adaptive (always on) | `medium` | Jun 2026 |
| [Claude Sonnet 5.5](https://platform.claude.com/docs/pt-BR/models/sonnet-5-5/overview) | 1M | 128K | $2 / $10 | Adaptive | `high` | Jun 2026 |
| [Claude Haiku 5.5](https://platform.claude.com/docs/pt-BR/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.
## Especificações
### Model IDs
| Platform | Model ID |
| :-------------------------------------------------------------------------------------------------------- | :------------------------- |
| Claude API | `claude-fable-5` |
| [Amazon Bedrock](https://platform.claude.com/docs/pt-BR/build-with-claude/claude-in-amazon-bedrock) | `anthropic.claude-fable-5` |
| [Google Cloud](https://platform.claude.com/docs/pt-BR/build-with-claude/claude-on-vertex-ai) | `claude-fable-5` |
| [Microsoft Foundry](https://platform.claude.com/docs/pt-BR/build-with-claude/claude-in-microsoft-foundry) | `claude-fable-5` |
| [Claude Platform on AWS](https://platform.claude.com/docs/pt-BR/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/pt-BR/build-with-claude/prompt-caching) | $12.50 / MTok |
| [1h cache write](https://platform.claude.com/docs/pt-BR/build-with-claude/prompt-caching) | $20 / MTok |
| [Cache read](https://platform.claude.com/docs/pt-BR/build-with-claude/prompt-caching) | $1 / MTok |
| [Batch API](https://platform.claude.com/docs/pt-BR/build-with-claude/batch-processing) | 50% discount on input and output |
[Full price list](https://platform.claude.com/docs/pt-BR/about-claude/pricing)
### Capabilities
| Feature | Value |
| :----------------------------------------------------------------------------------------- | :--------------------- |
| [Context window](https://platform.claude.com/docs/pt-BR/build-with-claude/context-windows) | 1M tokens |
| Max output | 128K tokens |
| [Thinking](https://platform.claude.com/docs/pt-BR/build-with-claude/thinking) | Adaptive (always on) |
| [Default effort](https://platform.claude.com/docs/pt-BR/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/pt-BR/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/pt-BR/build-with-claude/claude-in-amazon-bedrock), [Google Cloud](https://platform.claude.com/docs/pt-BR/build-with-claude/claude-on-vertex-ai), [Microsoft Foundry](https://platform.claude.com/docs/pt-BR/build-with-claude/claude-in-microsoft-foundry), [Claude Platform on AWS](https://platform.claude.com/docs/pt-BR/build-with-claude/claude-platform-on-aws) |
## Recursos
O que muda ao passar do Claude Fable 5 para o Claude Fable 5.1.
O modelo Fable atual: visão geral, especificações e recursos.
Capacidades, mudanças na API e disponibilidade do Claude Fable 5.
Orientações de prompt específicas do modelo para trabalho de longo horizonte e agêntico.
Lide com recusas de classificadores e tente novamente em outro modelo Claude com o parâmetro `fallbacks`.
## Referência
O prompt do sistema que o Claude Fable 5 usa no claude.ai e nos aplicativos Claude.
Avaliações de segurança e decisões de implantação para o Claude Fable 5 e o Claude Mythos 5.
Lista completa de preços, incluindo descontos em lote e taxas de cache de prompt.
Como funcionam os IDs de modelo, aliases e snapshots fixados.
Status do ciclo de vida e compromissos de desativação para cada modelo Claude.