The best value for every token: GPT-5.6 Sol is now our default in Cosmos
Eight models in eight weeks! After testing them all on real, long-horizon software development tasks, we’re making
@OpenAI’s GPT-5.6 Sol the new default in Cosmos.
It’s the most token efficient model that clears our quality bar for the engineering loops that teams are setting up with Cosmos, our agent orchestration platform.
You still have the flexibility to pick any other models and when in doubt, just ask the Cosmos Advisor to pick the best model for the task.