Claude Release Notes

Claude Sonnet 4.6 launch

We launched our most capable Sonnet model yet, with a full upgrade of the model’s skills across coding, computer use, long-context reasoning, agent planning, knowledge work, and design. Sonnet 4.6 also features a 1M token context window in beta. Read our blog post for more information: Introducing Claude Sonnet 4.6.

Analytics API for Enterprise plans

The Enterprise Analytics API provides programmatic access to usage and engagement data for Claude and Claude Code Remote usage within your organization. Data is aggregated per organization, per day, and each endpoint returns a snapshot for a single date that you specify. For more information, see Access usage data with the Analytics API.

Self-serve Enterprise plans

Previously, Enterprise plans were only available to customers working with our Sales team. Now, any organization can purchase an Enterprise plan directly on our website with no Sales conversation required. Self-serve Enterprise plans have a single seat type that includes access to Claude, Claude Code, and Cowork. For more information, refer to our blog post or What is the Enterprise plan?

Claude Opus 4.6 launch

We’ve upgraded our smartest model and improved its coding skills. Read our blog post for more information: Introducing Claude Opus 4.6.

Introducing Claude in PowerPoint

Claude is now available as an add-in for PowerPoint. Read more here: Using Claude in PowerPoint.

Claude in Excel improvements

We’ve updated Claude in Excel so it uses Opus 4.6 and supports native Excel operations such as pivot table editing and conditional formatting. See our updated article for more information: Using Claude in Excel.

Cowork research preview expanded to Pro plans

Cowork is now available to Pro plan users on Claude Desktop (macOS only).

Claude Code access added to Team plan Standard seats

We’re now including Claude Code access with every Team plan standard seat. Refer to this article for more information: Purchasing and managing seats on Team plans.

Opus 4 and 4.1 deprecated from Claude and Claude Code

We’ve removed Claude Opus 4 and 4.1 from the Claude model selector and Claude Code. Refer to this article for further details and recommendations: Adapting to new model personas after deprecations.

Cowork research preview on Claude Desktop (macOS only) for Max plans

Cowork brings Claude Code's agentic capabilities to the Claude desktop app for knowledge work beyond coding. It runs locally on your computer in an isolated VM, enabling direct access to local files and MCP integrations.

Refer to this article to learn more: Getting started with Cowork.

Health and fitness data on Claude Mobile

Claude can now read and analyze your health and fitness data on iOS and Android. Ask Claude about your activity patterns, workout trends, sleep quality, and more—Claude will provide insights and visualizations using native charts.

Health features are available on Pro and Max plans and currently limited to users in the US. On Android, Health Connect and Android 14 or later are required.

See the following articles for more information:

• Using Claude with iOS Apps

• Using Claude with Android Apps

HIPAA-ready Enterprise plans

We now offer a HIPAA-ready version of Claude that is available for organizations with Enterprise plans that choose to process protected health information (PHI) through Claude.

See HIPAA-ready Enterprise plans for more information.

Skills for organizations, partners, and the ecosystem

In October, we introduced skills—a way to teach Claude repeatable workflows tailored to how you work. Skills are now easier to deploy, discover, and build with organization-wide management for Team and Enterprise plans, a directory of partner-built skills, and an open standard (Agent Skills) so skills work across AI platforms.

Claude Opus 4.5 launch

We released our most powerful frontier model to date. Read our blog post for more information: Introducing Claude Opus 4.5.

Claude in Excel beta release

Claude in Excel is now available in beta to all Max, Team, and Enterprise users. We’ve added some additional capabilities, such as support for pivot tables, charts and file uploads, plus a shortcut to quickly open the full Claude app from Excel (ctrl+option+c). We've also made overall improvements to performance, speed, context management, and the general user experience. See Claude in Excel.

Context window compaction

We’ve changed our context window functionality to enable infinite-length conversations (with some exceptions) and significantly reduce length limit errors by summarizing earlier messages when a chat approaches its context limit. Read more here: Understanding Usage and Length Limits.

Claude’s memory on Max and Pro plans

Max plan users can now access Claude’s memory capabilities. This feature will roll out to Pro plans gradually over the next two weeks.

Claude Haiku 4.5 launch

We released our fastest, most cost-efficient model – Claude Haiku 4.5. Our latest small model matches Sonnet 4’s performance on coding, computer use, and agent tasks.