Claude Opus 4.8 API by Anthropic

Claude Opus 4.8

Claude Opus 4.8 is Anthropic's Opus-tier model for complex reasoning, agentic coding, high-autonomy workflows, and long-context analysis.

SchemaLLMs
INPUT
Form

Describe the result you want the model to create.

Optional system-level behavior instructions.

0.7

Higher values make the response more varied.

Maximum output length for the response.

OUTPUT
Idle
Your generated responses will appear here
Configure your settings and click Run to get started

1. Introduction

Claude Opus 4.8 is a ModelVia model.Claude Opus 4.8 is Anthropic's Opus-tier model for complex reasoning, agentic coding, high-autonomy workflows, and long-context analysis.

This page combines the model overview, interactive testing surface, request schemas, and production API workflow in one place.

2. Key Features & Innovations

  • • Reasoning
  • • Coding
  • • Agents
  • • Long Context

3. Model Architecture & Technical Details

Claude Opus 4.8 is Anthropic's Opus-tier model for complex reasoning, agentic coding, high-autonomy workflows, and long-context analysis.

Prompt

Describe the result you want the model to create.

System instructions

Optional system-level behavior instructions.

Temperature

Higher values make the response more varied.

Max tokens

Maximum output length for the response.

4. Performance Highlights

  • • Provider limits and pricing can vary by route configuration.

5. Intended Use & Applications

Reasoning
Coding
Agents
Long Context
Claude

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