Developers pinned to this version can keep using it in the API, though newer Opus models now lead in the Claude apps.

Kenning's take

What it does

Claude Opus 4.6 improved on Opus 4.5 at coding, longer agent tasks, code review and work in large codebases, and was the first Opus model with a 1 million token context window (in beta at launch). Anthropic also aimed it at financial analysis, research and documents, and released Claude in PowerPoint alongside it. It is still offered in the API at $5/$25 per million tokens.

• 1M token context window (beta at launch)
• Stronger planning and longer agentic tasks
• Better code review and debugging
• Effort controls for developers

Who it suits. Developers using this specific model version.

Key facts

Category

AI models

Part of

Claude

Made by

Anthropic

Based in

United States

Released

5 February 2026

How to get it

still available in the Claude API and on Amazon Bedrock, Google Cloud and Microsoft Foundry (listed as active on Anthropic's deprecation page); in the Claude apps it has been followed by newer models

Works on

API, Amazon Bedrock, Google Cloud Vertex AI, Microsoft Foundry

In the UK

Yes

API price

$5 per million input tokens, $25 per million output tokens

FAQ

Facts from the maker's own pages and the sources listed. Checked 2026-10-11.