GPT-5.6 Beats Fable in Code Review
soumitrashukla9 · x · 2026-07-10
A comparison test was shared where GPT-5.6 Sol Ultra and Fable 5 Max were tasked with reviewing the plan of a highly complex WIP app codebase (500k tokens) to determine feasibility.
Fable approved the plan, but GPT-5.6 identified several P0/P1 issues, including security risks. When these findings were fed back to Fable, it admitted missing critical flaws and acknowledged its initial "ready for implementation" verdict was incorrect.
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