Claude Opus 4.5 (latest)

Name: Claude Opus 4.5 (latest)
Author: Anthropic

Flagship Claude model for deep reasoning, coding, and long-horizon agents

Live

Open / InstallLast updated August 22, 2026

Description

Flagship Claude model for deep reasoning, coding, and long-horizon agents. Supports a context window of 200,000 tokens. Supports extended reasoning. Supports tool calling. Input priced at $5 per million tokens. Weights are not publicly released; access is via the provider API.

Author

Anthropic

Platform

api

Pricing model

paid

Capabilities

Text generation
200,000 token context
Extended reasoning
Tool calling
File attachments
Image input