Developer Tests GPT 5.6 Sol: API Speed Boost Falls Short of Expectations

brandon_galang · x · 2026-08-01

A developer reported on X that they are not experiencing the advertised 2.5x speed boost with the GPT 5.6 Sol model via the API. According to their actual tests, they are only seeing a 40% increase in speed, which falls significantly short of official claims.

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