Latest Sonnet News

Claude Opus 4.6 and Sonnet 4.6 now offer a 1M context window at standard pricing, with no long-context premium. This includes full rate limits, 6x more media per request, and improved accuracy across the full window.

Claude Sonnet 4.6 is a major update that significantly improves its core abilities, from coding and research to complex reasoning and creative tasks.

Microsoft Foundry now offers Claude Sonnet 4.5, Haiku 4.5, and Opus 4.1 models in public preview, enabling Azure customers to develop production applications and enterprise agents.

Claude Sonnet 4.5 has outperformed OpenAI and Google in recent coding assessments.

Claude Sonnet 4.5 = stronger coding + reasoning, best at computer use, safer alignment, new checkpoints, IDE + app integrations, and the new Claude Agent SDK for devs.

Claude Sonnet 4.5 = stronger coding + reasoning, best at computer use, safer alignment, new checkpoints, IDE + app integrations, and the new Claude Agent SDK for devs.

Microsoft 365 Copilot is expanding its model choices by adding Anthropic models, specifically Claude Sonnet 4 and Claude Opus 4.1, alongside OpenAI models. This allows users to choose their preferred model for tasks in Researcher and when building agents in Copilot Studio. Anthropic models are available for opt-in through the Frontier Program and can be managed by organization admins.

Copilot Studio now lets you build agents using Anthropic's Claude Sonnet 4 and Claude Opus 4.1 models, in addition to OpenAI's offerings.

Claude Sonnet 4 can now handle up to 1 million tokens, five times more than before, on the Anthropic API.