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Kimi K3: second only to Fable 5 on AA-Briefcase
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Overview
Kimi K3, a 2.8T parameter model from Moonshot AI, scores 57 on the Artificial Analysis Intelligence Index and has an Elo of 1543 on the AA-Briefcase benchmark, making it second only to Fable 5. Kimi K3 costs more to run than Opus 4.8 and averages nearly an hour per task, showing a +727 improvement over Kimi K2.6.
Summary from artificialanalysis.ai.
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Kimi K3: second only to Fable 5 on AA-Briefcase
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Based on 5 sampled comments from this thread. Analyzed 2026-07-22.
- Praise: Once inference providers get their hands on Kimi K3, it could become incredibly affordable — a true 'bicycle for the mind' that Fable couldn't quite deliver.
- Praise: The methodology for testing models is getting more transparent, which will help improve trust in benchmark results and their implications.
- Concern: The discussion around cost efficiency is glaringly absent, leaving many to question how ELO points correlate with actual performance and value.
- Concern: With China closing the gap on US SOTA models, the lack of market sentiment change raises eyebrows about potential complacency among US firms.