Claude Fable 5.2 — Specifications
Compilado por Mustafa Ihsan de la documentación publicada por el proveedor · Última actualización
| Desarrollador | Anthropic |
|---|---|
| Tipo | Razonamiento / agente |
| Modalidad | Texto, visión |
| Parámetros | No revelado |
| Ventana de contexto | 1 millón |
| Salida máxima | 128 K |
| Licencia | Propietario |
| Pesos abiertos | No |
| Lanzado | 2026-11 |
| Precio de entrada | $8.00 /1M |
| Precio de salida | $40.00 /1M |
| Proveedores 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 costos de API de IA compares monthly costs across the Base de datos de modelos.
Claude Fable 5.2 pricing: API cost per 1M tokens
| Entrada (por cada millón de tokens) | $8.00 |
|---|---|
| Salida (por cada millón de tokens) | $40.00 |
| Relación salida/entrada | 5× |
| Combinada (4:1 entrada:salida) | $14.40 por 1 millón de tokens |
What Claude Fable 5.2 costs per month
Gasto mensual real con una mezcla entrada:salida de 4:1, es decir, la proporción que realmente genera una carga de trabajo típica de chat o RAG.
| Carga de trabajo | Tokens/mes | Coste mensual |
|---|---|---|
| Proyecto secundario | 1 millón de tokens de entrada / 0,25 millones de tokens de salida | $18 |
| Pequeño equipo | 20 millones de tokens de entrada / 5 millones de tokens de salida | $360 |
| Producción | 200 millones de tokens de entrada / 50 millones de tokens de salida | $3,600 |
Calcule sus propios números en la Calculadora de costos de API de IA.
Cheaper alternatives to Claude Fable 5.2
| Modelo | Dólares por millón combinados | Usted ahorra |
|---|---|---|
| Llama 3.1 8B abierta | $0.0240 | 100 % más barato |
| Mistral NeMo 12B abierta | $0.0292 | 100 % más barato |
| Gemma 3 4B abierta | $0.0600 | 100 % más barato |
Preguntas frecuentes
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.
Vea todos los modelos Claude comparados lado a lado: Precios de la API de Claude.
Los precios corresponden a las tarifas oficiales publicadas para la API principal del modelo y se revisan periódicamente conforme los proveedores los actualicen. No incluyen descuentos por volumen, procesamiento por lotes ni entradas en caché. Compare todos los modelos uno al lado del otro en la Base de datos de modelos de IA o el Clasificación de modelos de lenguaje grande (LLM).