
Open-Weight Models Are Driving Down the Cost of AI
The last few weeks have brought a lot of major developments in AI. Anthropic’s Claude Opus 5, released on July 24, now narrowly tops the independent Artificial Analysis Intelligence Index with a score of 61, ahead of its own Fable 5 at 60 and OpenAI’s GPT-5.6 Sol at 59. Notably, Opus 5 reaches Fable-level intelligence at roughly half the blended token price. More interesting to us is how quickly the open-weight models are closing the performance gap, and how much cheaper they are.
















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