Anthropic PBC today debuted the next upgrade to its flagship large language model Claude Opus, its largest frontier artificial intelligence model, with 4.6, a direct upgrade over 4.5, which the company says raises the bar for knowledge work and complex tasks.

In addition to the launch of Opus 4.6, Anthropic announced a bevy of other updates, including AI agents that work in teams and Claude in PowerPoint.

Support for 1 million tokens

Opus 4.6 will support 1 million tokens of context in beta on the Claude Developer Platform at launch, making it the first Opus model with long context.

That makes it a contender against models such as Google LLC’s Gemini 1.5 Pro and Flash, which also support up to 1 million tokens per prompt. This allows the model to process massive amounts of information in a single prompt, including up to 1,500 pages of text, up to 30,000 lines of code, or over an hour of video.

The current context window size of Claude Opus 4.5 is a not-too-shabby 200,000-token window, equivalent to several hundred pages of text. To handle longer conversations, which is common for users who continue to converse over long periods of time or have lengthy coding tasks, the system will compress previous conversations in order to maintain the window’s integrity.

Anthropic also expanded Sonnet 4, the high-performance and efficiency model, to a 1 million-token context window in August.

Claude for developers

With this new development, Anthropic  rolled out “Agent Teams.” With these teams, agents operate the way the software engineers work together to split work into multiple tasks. The company said that can help distribute work and shorten time.

The company added that with a team of agents, no single agent will become a bottleneck; each agent owns its own task and is capable of working independently, while still coordinating with others.

Agent teams can also work across dozens of tools in a single task and recover from errors discovered along the way. It’s available now for subscription and application programming interface users.

Claude for PowerPoint users

Claude in PowerPoint will launch in preview for Max, Team and Enterprise plan customers where it will work directly in Microsoft PowerPoint.

The LLM will be able to read layouts, fonts and slide masters. This will allow users to ask the model to stay on brand and build slides based on corporate templates, restructure storylines, convert bullets into diagrams or generate full decks from descriptions, with no need to leave the app.

Image: Anthropic