One signal

Epoch AI says its measurements found that OpenAI’s GPT-6.1 Sol handles long prompts faster than GPT-6 Sol. The group also says Sol’s cached-input price is half that of its predecessor.

That makes the update relevant to people paying for repeated or lengthy model calls: lower cached-input pricing and quicker long-prompt handling could both matter in real workloads. Epoch AI has not supplied measurement details in the post, so the speed claim needs its methods before it can be weighed properly.

Discuss: When comparing models, should lower prices count as a meaningful improvement if the speed advantage has not yet been explained with benchmark details?

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