Introducing the newest Anthropic model: Claude Opus 4.5.
Opus 4.5 is the best model in the world for coding, agents, and computer use. It’s also meaningfully better at everyday tasks, like working with slides and spreadsheets. It’s a step forward in what AI systems can do, and a preview of larger changes in how work gets done.
Alongside Opus 4.5, Anthropic is releasing several new product features:
On the Claude app, long conversations no longer hit a wall. Claude automatically summarizes earlier context as needed, so you can keep the chat going indefinitely.
On the Claude Developer Platform, they’ve added tool search, programmatic tool calling, and tool use examples. Together with effort control and context compaction, these let Claude run longer and do more—with less intervention.
Claude Code is now available in the desktop app, letting you run multiple sessions in parallel. And Plan Mode gets an upgrade with Opus 4.5: Claude asks clarifying questions upfront, then works autonomously.
Finally, they’ve expanded Claude for Chrome to all Max users—and Claude for Excel to Max, Team, and Enterprise.
Opus 4.5 is available on the API and on all three major cloud platforms: Amazon Bedrock, Google Cloud’s Vertex AI, and Microsoft Foundry.
Claude Opus 4.5 is already available on Perplexity and Notion.
Read more: https://www.anthropic.com/news/claude-opus-4-5
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