Open Weights vs Frontier: Just a 3-Point Gap but 1/3 the Cost
MicahBerkley · x · 2026-08-23
As of August 2026, the best open-weight model, Moonshot's Kimi K3, scores 60 on the Artificial Analysis Intelligence Index, trailing Claude Opus 5 (63) and Fable 5 (62) by just three points. However, K3 costs $3 in / $15 out per million tokens, one-third of Fable 5's price ($10/$50). The article argues open weights are now the truth for value, with closed models retaining a moat only in long-horizon agentic coding tasks like DeepSWE.
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