Anthropic today announced the launch of Claude Opus 4.5, which it says is the “best model in the world for coding, agents, and computer use.” It’s improved over prior models for everyday tasks like deep research, and it is a “step forward in what AI systems can do.”
According to feedback Anthropic received from early testers, Claude Opus 4.5 can complete tasks that were impossible for Sonnet 4.5, and that it is able to handle ambiguity and reason about tradeoffs without hand-holding. The Opus 4.5 model offers better vision, reasoning, mathematics skills, and coding than prior versions of Claude.
Along with the Opus update, Anthropic is updating its apps, the Claude Developer Platform, and Claude Code. There are tools for longer-running agents, and options to use Claude in Excel, Chrome, and on the desktop.
In the Claude apps, users will no longer run into limits during a long conversation. Claude is able to automatically summarize earlier context, which means the conversation can keep going endlessly. Claude for Chrome is available to all Max users, and Claude for Excel beta access is now available to all Max, Team, and Enterprise users.
Claude Code is now available in the desktop app, and with Opus 4.5, it is able to build more precise plans and execute them more thoroughly. Claude is able to ask clarifying questions upfront and then build a user-editable plan before executing.
Claude Opus 4.5 is available today across Anthropic’s apps and its API. Opus-specific caps have been removed for Claude and Claude Code users with access to Opus 4.5, and for Max and Team Premium members, overall usage limits have increased.
