GPT 5.6 Hands-on: More Autonomous and Faster
Accomplished_Whole_6 · reddit · 2026-07-10
The author claims to have gained access to GPT 5.6 Sol Ultra and conducted an initial comparison with Fable 5. Based on their experience, GPT 5.6 Sol Ultra shows significant improvements over GPT 5.5, particularly in being more autonomous and offering a faster speed mode.
When tasking both models to review code and find bugs in a new project session, GPT 5.6 Sol Ultra identified more issues and demonstrated a better overall understanding of the project. The author plans to continue testing.
Related event: GPT-5.6 Tested: Major Coding Leap and Direct Rival to Fable 5(30 posts)→
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