Copilot-Cowork

GPT-6.1 Sol and Claude Sonnet 5.5 available in Copilot

Maxime Hiez
Copilot
06 Oct, 2026

Introduction Microsoft Copilot has been rolling out, since September 30, 2026, two new frontier models : GPT-6.1 Sol from OpenAI and Claude Sonnet 5.5 from Anthropic. This rollout f

GPT-6 Astra available in Copilot

Maxime Hiez
Copilot
09 Sep, 2026

Introduction GPT-6 Astra joins the frontier models available in Copilot Cowork and Copilot Studio, five days after its launch by OpenAI. The rollout began on September 4, 2026. Che

GPT-5.6 now available in Copilot

Maxime Hiez
Copilot
06 Aug, 2026

Introduction On July 9, 2026, GPT-5.6 became the preferred model of Microsoft 365 Copilot, on the very day of its general availability at OpenAI. The preview of the range, restricted