Open Source Still Lags Behind: K3 Too Slow, Opus Remains Superior
bindureddy · x · 2026-08-03
The author points out that while open source is catching up, a huge difference remains compared to closed models. Specifically, they note that the open-source K3 is good for Sonnet-class workloads but is very slow, and v4 flash is a class below K3. Overall, closed models like Opus, Fable, and Sol are still much better.
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