The Bottom Line: Copilot Cowork is now generally available and allows users to choose between models from Anthropic (Claude Opus 4.8, Sonnet 4.6) as well as GPT 5.5 in the Frontier program.
Microsoft has launched the general availability of Copilot Cowork, an agent-based AI tool for complex, long-running tasks across multiple applications. The system is already being used by more than half of Fortune 500 companies.
Microsoft has moved Copilot Cowork into general availability. The tool is designed as an agent-based AI system and is intended to support complex and long-running tasks across multiple applications. According to Microsoft, over 50 percent of Fortune 500 companies are already using the system.
The tool offers choice in the underlying models. Currently, Copilot Cowork runs with Claude Opus 4.8 and Sonnet 4.6 from Anthropic, as well as GPT 5.5 in the Frontier program. For the future, Microsoft announced the Cowork 1 model, specifically optimized for routine tasks, which is intended to reduce operational costs and reduce model bias.
The platform has been expanded in model selection and extensibility. New additions include the integration of partner plugins and, in the Frontier program, the ability to conduct internet research via a locally operated edge browser. A Microsoft 365 Copilot User Subscription License (USL) is required to use the service. Advanced features are billed on a consumption-based model, with costs depending on the type and scope of tasks performed.
Source: www.it-daily.net · Published June 17, 2026
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