1M context is now generally available for Opus 4.6 and Sonnet 4.6
claude.com
March 13, 2026
2 min read
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77/100
Summary
Opus 4.6 and Sonnet 4.6 now support a 1M context window at standard pricing, eliminating the long-context premium. Media limits have been increased to 600 images or PDF pages.
Key Takeaways
- The Claude Opus 4.6 and Sonnet 4.6 models now support a full 1 million token context window at standard pricing, with no long-context premium.
- Opus 4.6 achieves a score of 78.3% on the MRCR v2 benchmark, the highest among frontier models at that context length.
- The 1 million context feature is available on the Claude Platform and through Amazon Bedrock, Google Cloud’s Vertex AI, and Microsoft Foundry.
- Users of Claude Code Max, Team, and Enterprise on Opus 4.6 will automatically utilize the full 1 million context window in their sessions.
Community Sentiment
Positives
- Opus 4.6 demonstrates remarkable versatility, effectively handling diverse tasks across frontend, backend, and algorithms, showcasing its robust capabilities.
- The ability to execute complex tasks in hours, guided by step-by-step plans, highlights Opus 4.6's efficiency and potential for rapid deployment in real-world applications.
- Achieving processing speeds of 1k tokens per second with multiple agents working simultaneously indicates significant advancements in AI performance and scalability.
Concerns
- Concerns about the coherence of performance beyond 200k tokens suggest that the effective context may not fully utilize the 1M window, potentially limiting usability.
- The pricing structure for Claude appears to lack incentives for larger plans, raising questions about cost-effectiveness and accessibility for users.