Model releasesSeptember 29, 2026Impact
OpenAI's GPT-6.1 Sol becomes the writer's model
GPT-6.1 Sol, OpenAI's balanced model, shipped with major gains in creative and long-form writing and a lower price than Astra.
Why it matters
It narrowly takes the lead in our creative writing race, a category Claude had held for most of the year, and gives OpenAI a strong workhorse below Astra.
The details
- Sol leads creative writing narrowly over Opus 5.5 and sits second overall, inside the photo-finish pack.
- It is the new default model in ChatGPT for most users.
Models in this story
Provenance: Lab announcement; independent writing evaluations confirm the gain. Illustrative placeholder story.