---
title: Claude Opus 4.8
url: https://platform.claude.com/docs/es/models/opus-4-8/overview
description: "Referencia de Claude Opus 4.8: estado del ciclo de vida, IDs de modelo en cada plataforma, ventana de contexto, límites de salida, precios y recursos de migración. Claude Opus 4.8 es un modelo heredado; Claude Opus 5.5 es el modelo Opus actual."
---
**Legacy.** Released May 28, 2026.
Although Claude Opus 4.8 is still available, you should consider migrating to Claude Opus 5.5. [See Claude Opus 5.5](https://platform.claude.com/docs/es/models/opus-5-5/overview) · [Migrate to Claude Opus 5.5](https://platform.claude.com/docs/es/models/opus-5-5/migration-guide#migrating-from-claude-opus-4-8)
Model ID: `claude-opus-4-8`
Context window: 1M tokens · Max output: 128K tokens · Input pricing: $5 / MTok · Output pricing: $25 / MTok
## Cómo se compara con la línea actual
| Model | Context | Max output | Price / MTok | Thinking | Default effort | Knowledge cutoff |
| :---------------------------------------------------------------------------------- | :------ | :--------- | :----------------- | :------------------- | :------------- | :--------------- |
| [Claude Fable 5.1](https://platform.claude.com/docs/es/models/fable-5-1/overview) | 1M | 128K | $10 / $50 | Adaptive (always on) | `high` | Jun 2026 |
| [Claude Opus 5.5](https://platform.claude.com/docs/es/models/opus-5-5/overview) | 1M | 128K | $4 / $20 | Adaptive (always on) | `medium` | Jun 2026 |
| **Claude Opus 4.8** (this model) | 1M | 128K | $5 / $25 | Adaptive | `high` | Jan 2026 |
| [Claude Sonnet 5.5](https://platform.claude.com/docs/es/models/sonnet-5-5/overview) | 1M | 128K | $2 / $10 | Adaptive | `high` | Jun 2026 |
| [Claude Haiku 5.5](https://platform.claude.com/docs/es/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.
## Especificaciones
### Model IDs
| Platform | Model ID |
| :----------------------------------------------------------------------------------------------------- | :-------------------------- |
| Claude API | `claude-opus-4-8` |
| [Amazon Bedrock](https://platform.claude.com/docs/es/build-with-claude/claude-in-amazon-bedrock) | `anthropic.claude-opus-4-8` |
| [Google Cloud](https://platform.claude.com/docs/es/build-with-claude/claude-on-vertex-ai) | `claude-opus-4-8` |
| [Microsoft Foundry](https://platform.claude.com/docs/es/build-with-claude/claude-in-microsoft-foundry) | `claude-opus-4-8` |
| [Claude Platform on AWS](https://platform.claude.com/docs/es/build-with-claude/claude-platform-on-aws) | `claude-opus-4-8` |
### Pricing
| Feature | Value |
| :------------------------------------------------------------------------------------- | :------------------------------- |
| Input | $5 / MTok |
| Output | $25 / MTok |
| [5m cache write](https://platform.claude.com/docs/es/build-with-claude/prompt-caching) | $6.25 / MTok |
| [1h cache write](https://platform.claude.com/docs/es/build-with-claude/prompt-caching) | $10 / MTok |
| [Cache read](https://platform.claude.com/docs/es/build-with-claude/prompt-caching) | $0.50 / MTok |
| [Batch API](https://platform.claude.com/docs/es/build-with-claude/batch-processing) | 50% discount on input and output |
[Full price list](https://platform.claude.com/docs/es/about-claude/pricing)
### Capabilities
| Feature | Value |
| :-------------------------------------------------------------------------------------------------------------------------- | :--------------------- |
| [Context window](https://platform.claude.com/docs/es/build-with-claude/context-windows) | 1M tokens |
| Max output | 128K tokens |
| [Max output (Batch API, beta)](https://platform.claude.com/docs/es/build-with-claude/batch-processing#extended-output-beta) | 300K tokens |
| [Thinking](https://platform.claude.com/docs/es/build-with-claude/thinking) | Adaptive |
| [Default effort](https://platform.claude.com/docs/es/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/es/about-claude/model-deprecations) | Active (legacy) |
| Released | May 28, 2026 |
| Retirement | Not sooner than May 28, 2027 |
| Platforms | Claude API, [Amazon Bedrock](https://platform.claude.com/docs/es/build-with-claude/claude-in-amazon-bedrock), [Google Cloud](https://platform.claude.com/docs/es/build-with-claude/claude-on-vertex-ai), [Microsoft Foundry](https://platform.claude.com/docs/es/build-with-claude/claude-in-microsoft-foundry), [Claude Platform on AWS](https://platform.claude.com/docs/es/build-with-claude/claude-platform-on-aws) |
## Recursos
Qué cambia al pasar de Claude Opus 4.8 a Claude Opus 5.5.
El modelo Opus actual: descripción general, especificaciones y recursos.
Orientación sobre prompts específica del modelo.
## Referencia
La indicación del sistema que Claude Opus 4.8 usa en claude.ai y las aplicaciones de Claude.
Evaluaciones de seguridad y decisiones de implementación para Claude Opus 4.8.
Lista completa de precios, incluyendo descuentos por lotes y tarifas de almacenamiento en caché de prompts.
Cómo funcionan los IDs de modelo, los alias y las instantáneas fijadas.
Estado del ciclo de vida y compromisos de retiro para cada modelo de Claude.