Claude Sonnet 5.5 — Specifications
Compiled by Mustafa Ihsan from the vendor’s published documentation · Last updated
| Desarrollador | Anthropic |
|---|---|
| Tipo | Razonamiento / agente |
| Modalidad | Texto, visión |
| Parámetros | No revelado |
| Licencia | Propietario |
| Pesos abiertos | No |
| Lanzado | 2026-09 |
| Precio de entrada | $2.00 /1M |
| Precio de salida | $10.00 /1M |
| Proveedores de API | Anthropic API, AWS, Google Cloud, Microsoft Azure |
Benchmarks
| Anthropic-reported | Terminal-Bench 4.0 70.6%; CursorBench 4.0 55.5%; FrontierCode 1.1 (Max) 46.2%; GDPval-AA v2.1 1844 Elo; OSWorld 2.1 80.1% (partial); Humanity's Last Exam 64.5% (with tools) |
|---|
¿Qué es Claude Sonnet 5.5?
Claude Sonnet 5.5 is Anthropic’s mid-range model, released on 28 September 2026 as the second model of the Claude 5.5 family. Según Anthropic, it generates output more than 30% faster than Sonnet 5 and costs up to 30% less per task because it needs fewer tokens, while scoring close to Claude Opus 5.5 on several agentic and knowledge-work evaluations.
API pricing is unchanged from Sonnet 5: $2 per million input tokens and $10 output, with cache reads at $0.20 and cache writes at $2.50. It is available on the Claude Platform as claude-sonnet-5-5 and on AWS, Google Cloud and Microsoft Azure. A plain-language guide: Claude Sonnet 5.5: what’s new and is it free.
Claude Sonnet 5.5 pricing: API cost per 1M tokens
| Entrada (por cada millón de tokens) | $2.00 |
|---|---|
| Salida (por cada millón de tokens) | $10.00 |
| Relación salida/entrada | 5× |
| Combinada (4:1 entrada:salida) | $3.60 por 1 millón de tokens |
What Claude Sonnet 5.5 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 | $4.50 |
| Pequeño equipo | 20 millones de tokens de entrada / 5 millones de tokens de salida | $90 |
| Producción | 200 millones de tokens de entrada / 50 millones de tokens de salida | $900 |
Calcule sus propios números en la Calculadora de costos de API de IA.
Cheaper alternatives to Claude Sonnet 5.5
| Modelo | Dólares por millón combinados | Usted ahorra |
|---|---|---|
| Mistral 7B abierta | $0.0220 | 99 % más barato |
| Llama 3.1 8B abierta | $0.0220 | 99 % más barato |
| Mistral NeMo 12B abierta | $0.0240 | 99 % más barato |
Preguntas frecuentes
How much does Claude Sonnet 5.5 cost per 1M tokens?
Claude Sonnet 5.5 costs $2.00 per 1M input tokens and $10.00 per 1M output tokens. At a typical 4:1 input-to-output mix that blends to about $3.60 per 1M tokens.
How much does Claude Sonnet 5.5 cost per month?
A small-team workload of 20M input and 5M output tokens a month costs about $90 on Claude Sonnet 5.5. A side project (1M in / 0.25M out) costs roughly $4.50.
What is a cheaper alternative to Claude Sonnet 5.5?
Mistral 7B is the strongest cheaper option in our database at $0.0220 per 1M blended — about 99% less than Claude Sonnet 5.5. It is also open-weight, so self-hosting is an option.
Can I run Claude Sonnet 5.5 locally?
No. Claude Sonnet 5.5 is a closed, API-only model — the weights are not released, so it cannot be self-hosted.
Why does Claude Sonnet 5.5 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 Sonnet 5.5 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).