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Claude Fable 5

Claude Fable 5 — Especificações

Compiled by Mustafa Ihsan from the vendor’s published documentation · Last updated

Desenvolvedor Anthropic
Tipo LLM (raciocínio de ponta)
Modalidade Texto, Visão → Texto
Parâmetros Não divulgado
Janela de contexto 1 milhão
Saída máxima 128K
Licença Proprietário
Pesos abertos Não
Lançado 2026
Preço da entrada $10.00 /1M
Preço da saída $50.00 /1M
Provedores de API Anthropic, AWS

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O que é o Claude Fable 5?

Claude Fable 5 is Anthropic’s most capable widely released model, positioned above the
Opus tier and priced accordingly at $10 in / $50 out per million tokens. Thinking is always
on — there is no non-reasoning mode to fall back to — which is what makes it strong on
long-horizon agentic work and what makes it expensive on anything trivial. It pairs a
1M-token context window with a 128K maximum output, an unusually large generation budget
that matters when the task is producing a long artifact rather than answering a question.

The economics only work at the top of the difficulty curve. At $50 per million output
tokens, Fable 5 costs roughly five times Claude Opus 4.8 on the output side, so routing
ordinary requests to it burns budget for no measurable gain. The sensible pattern is a
router: Fable 5 for the small share of tasks where a wrong answer is expensive — multi-step
agents that run unattended, deep research, refactors across a large codebase — and a
Sonnet- or Haiku-tier model for everything else. If your workload is mostly retrieval and
summarisation, the price gap will dominate your bill long before capability does.

Claude Fable 5 pricing: API cost per 1M tokens

Entrada (por 1 milhão de tokens)$10.00
Saída (por 1 milhão de tokens)$50.00
Razão saída/entrada
Misturada (4:1 entrada:saída)$18.00 por 1 milhão de tokens

What Claude Fable 5 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 trabalhoTokens/mêsCusto por mês
Projeto paralelo 1 milhão de tokens de entrada / 0,25 milhão de tokens de saída $23
Equipe pequena 20 milhões de tokens de entrada / 5 milhões de tokens de saída $450
Produção 200 milhões de tokens de entrada / 50 milhões de tokens de saída $4,500

Calcule seus próprios números na Calculadora de custos de API de IA.

Cheaper alternatives to Claude Fable 5

ModeloCusto médio ponderado por US$ 1 milhãoVocê economiza
Claude Opus 5 $9.00 50% cheaper
GPT-5.6 Sol $10.00 44% mais barato
Kimi K3 aberta $5.40 70% cheaper

Perguntas frequentes

How much does Claude Fable 5 cost per 1M tokens?

Claude Fable 5 costs $10.00 per 1M input tokens and $50.00 per 1M output tokens. At a typical 4:1 input-to-output mix that blends to about $18.00 per 1M tokens.

How much does Claude Fable 5 cost per month?

A small-team workload of 20M input and 5M output tokens a month costs about $450 on Claude Fable 5. A side project (1M in / 0.25M out) costs roughly $22.50.

What is a cheaper alternative to Claude Fable 5?

Claude Opus 5 is the strongest cheaper option in our database at $9.00 per 1M blended — about 50% less than Claude Fable 5.

Can I run Claude Fable 5 locally?

No. Claude Fable 5 is a closed, API-only model — the weights are not released, so it cannot be self-hosted.

Why does Claude Fable 5 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 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.

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