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CLAUDE OPUS 4.6 LAUNCHES WITH 1M TOKEN CONTEXT WINDOW — Quick Facts

Anthropic drops Claude Opus 4.6 with 1 million token context, Agent Teams, and PowerPoint integration.

Key Data Points

Frequently Asked

What is Claude Opus 4.6 context window size?
Claude Opus 4.6 features a 1 million token context window, which is five times larger than previous Opus models and allows it to process entire codebases, legal documents, and research papers simultaneously.
How does Claude Opus 4.6 perform on needle-in-haystack tests?
Claude Opus 4.6 scored 76% on the needle-in-a-haystack benchmark MRCR v2, compared to Claude Sonnet 4.5's 18.5%, demonstrating superior fact-finding and reasoning capabilities across long and complex prompts.
When was Claude Opus 4.6 released?
Claude Opus 4.6 was announced by Anthropic on Thursday, February 5, 2025, as a direct upgrade to the previous Opus model.
What is Agent Teams feature in Claude Opus 4.6?
Agent Teams is a new feature available in research preview for API users that splits coding tasks across multiple AI agents working in parallel, improving efficiency for complex development projects.
How much does Claude Opus 4.6 cost?
Claude Opus 4.6 maintains the same pricing as its predecessor at $5 per million input tokens and $25 per million output tokens, despite offering significantly enhanced capabilities.

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