GPT-6 Astra beats Fable 5.1 on the lava lamp test at a quarter of the cost

BridgeMind @bridgemindaiOriginally posted 2026.09.09

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GPT 6 Astra just beat Fable 5.1 on the BridgeBench lava lamp test. And it cost 4x less to do it. Fable 5.1: $2.76, 17 minutes. GPT 6 Astra: $0.63, 5 minutes. Same prompt. Look at the two lamps and tell me which one you would pay more for. Astra's is better. The lava actually moves like lava. Fable 5.1 spent four times the money and three times the time to make a worse lamp. This is the whole Fable 5.1 story in one image. Slower, more expensive, and not better.