Claude Fable 5.2 — Specifications
Compilado por Mustafa Ihsan da documentação publicada pelo fornecedor · Última atualização
| Desenvolvedor | Anthropic |
|---|---|
| Tipo | Raciocínio / agente |
| Modalidade | Texto, visão |
| Parâmetros | Não divulgado |
| Janela de contexto | 1 milhão |
| Saída máxima | 128K |
| Licença | Proprietário |
| Pesos abertos | Não |
| Lançado | 2026-11 |
| Preço da entrada | $8.00 /1M |
| Preço da saída | $40.00 /1M |
| Provedores de API | Anthropic API, AWS, Google Cloud, Microsoft Azure |
Benchmarks
| Anthropic-reported | Terminal-Bench-Science 0.1 74.6%; FrontierCode 2.0 49.1% (xhigh effort); FrontierSWE v2 69.9%. Cache reads $0.20 per 1M tokens; fast mode $16 / $80. |
|---|
What is Claude Fable 5.2?
Claude Fable 5.2 is Anthropic’s most capable widely available model, released on 9 November 2026 together with Claude Mythos 5.2 (Anthropic’s announcement). Anthropic’s model documentation positions it for demanding reasoning and long-horizon agentic work, such as agent sessions that run for hours and research carried through to a finished document or spreadsheet. Mythos 5.2 shares its specifications and price but is offered only to organisations in Anthropic’s verification programmes.
API pricing is $8 per million input tokens and $40 per million output tokens, down from $10 and $50 for Claude Fable 5.1. Cache reads cost $0.20 per million, batch requests are 50% off, and an optional fast mode, which Anthropic says generates tokens up to 2.5 times faster, costs $16 / $80. Standard outputs are up to 30% faster than Fable 5.1. The model has a 1M-token context window, up to 128K output tokens and thinking that is always on, and runs on the Claude API as claude-fable-5-2 and on AWS, Google Cloud and Microsoft Azure.
Anthropic still recommends the cheaper Claude Opus 5.5 ($4 / $20) as the starting point for most coding and knowledge work, moving to Fable 5.2 for the hardest tasks. Launch details are in our Fable 5.2 launch story, and the Calculadora de custos de API de IA compares monthly costs across the banco de dados de modelos.
Claude Fable 5.2 pricing: API cost per 1M tokens
| Entrada (por 1 milhão de tokens) | $8.00 |
|---|---|
| Saída (por 1 milhão de tokens) | $40.00 |
| Razão saída/entrada | 5× |
| Misturada (4:1 entrada:saída) | $14.40 por 1 milhão de tokens |
What Claude Fable 5.2 costs per month
Gasto mensal real com uma proporção de entrada para saída de 4:1 — a razão efetivamente gerada por cargas de trabalho típicas de chat ou RAG.
| Carga de trabalho | Tokens/mês | Custo por mês |
|---|---|---|
| Projeto paralelo | 1 milhão de tokens de entrada / 0,25 milhão de tokens de saída | $18 |
| Equipe pequena | 20 milhões de tokens de entrada / 5 milhões de tokens de saída | $360 |
| Produção | 200 milhões de tokens de entrada / 50 milhões de tokens de saída | $3,600 |
Calcule seus próprios números na Calculadora de custos de API de IA.
Cheaper alternatives to Claude Fable 5.2
| Modelo | Custo médio ponderado por US$ 1 milhão | Você economiza |
|---|---|---|
| Llama 3.1 8B aberta | $0.0240 | 100% mais barato |
| Mistral NeMo 12B aberta | $0.0292 | 100% mais barato |
| Gemma 3 4B aberta | $0.0600 | 100% mais barato |
Perguntas frequentes
How much does Claude Fable 5.2 cost per 1M tokens?
Claude Fable 5.2 costs $8.00 per 1M input tokens and $40.00 per 1M output tokens. At a typical 4:1 input-to-output mix that blends to about $14.40 per 1M tokens.
How much does Claude Fable 5.2 cost per month?
A small-team workload of 20M input and 5M output tokens a month costs about $360 on Claude Fable 5.2. A side project (1M in / 0.25M out) costs roughly $18.00.
What is a cheaper alternative to Claude Fable 5.2?
Llama 3.1 8B is the strongest cheaper option in our database at $0.0240 per 1M blended — about 100% less than Claude Fable 5.2. It is also open-weight, so self-hosting is an option.
Can I run Claude Fable 5.2 locally?
No. Claude Fable 5.2 is a closed, API-only model — the weights are not released, so it cannot be self-hosted.
Why does Claude Fable 5.2 charge more for output than input?
Output tokens are generated one at a time and cannot be batched the way a prompt can, so they cost the provider more to serve. Claude Fable 5.2 charges 5× more for output, which is why prompt-heavy workloads are far cheaper to run than generation-heavy ones.
Veja todos os modelos Claude com preços comparados lado a lado: Preços da API Claude.
Os preços correspondem às tarifas listadas oficialmente para a API principal do modelo e são revisados conforme os provedores os atualizam. Descontos por volume, processamento em lote ou entradas em cache não estão incluídos. Compare todos os modelos lado a lado na Banco de dados de modelos de IA ou o Ranking de LLMs.