Devin Adds ChatGPT Sign-In and Support for OpenAI's GPT-6.1 Sol

Cognition rolled out two OpenAI-linked updates to Devin on September 29, 2026: a ChatGPT sign-in that lets eligible Plus/Pro users draw OpenAI model usage from their existing plan, and day-one support for GPT-6.1 Sol, which matches prior Sol models' benchmark scores at a lower price.