gpt-6POST
Simon Willison compares Opus 5.5, GPT-6 Sol and Luna
Simon Willison writes up the day's three model releases and includes comparison grids of pelicans generated by different model families at different reasoning levels.
Simon Willison
@simonwArchived 2026.09.23Originally posted 2026.09.23
Simon Willison @simonwOriginally posted 2026.09.23
Big model release today - I wrote about Claude Opus 5.5, GPT-6 Sol, and GPT-6 Luna - plus comparison grids of pelicans by the different model families at different reasoning levels https://simonwillison.net/2026/Sep/22/opus-and-sol-and-luna/
x.com/simonw/status/2102546103984079131Archived 2026.09.23 10:15