GPT 6.1 Sol is 2.5x slower and pricier than GPT 6 Sol in BridgeBench tests, contradicting OpenAI's efficiency claims

RexDouglass · x · 2026-10-03

BridgeBench tested GPT 6 Sol vs GPT 6.1 Sol on the same lava lamp prompt: GPT 6 Sol cost $0.08 and took 50s, while GPT 6.1 Sol cost $0.09 and took 2m 9s — 2.5x slower and more expensive, directly contradicting OpenAI's marketing that 6.1 Sol is more efficient.

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