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Back to No.003 GPT-6 Sol leaks, screenshots and release rumorsUpdated 12 days ago
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GPT-6 Sol nears Fable 5 on DeepSWE at about 80% lower cost

OpenAIDevs says GPT-6 Sol (max) nearly matches Claude Fable 5 (xhigh) on the DeepSWE v1.1 long-horizon engineering benchmark at roughly 80% lower cost per task.

OpenAI Developers
@OpenAIDevsArchived 2026.09.23Originally posted 2026.09.23
GPT-6 Sol nears Fable 5 on DeepSWE at about 80% lower cost
OpenAI Developers @OpenAIDevsOriginally posted 2026.09.23
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On DeepSWE v1.1, which tests coding agents on long-horizon engineering tasks, GPT-6 Sol (max) nearly matches Claude Fable 5 (xhigh) at ~80% lower cost per task. GPT-6 Luna (max) is comparable to Fable 5 (medium) at 96% lower cost per task. https://t.co/RN7DmjpUfJ

x.com/openaidevs/status/2102461464279912495Archived 2026.09.23 10:39
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