# Kimi K3 with First Tree Beats GPT 5.6 Sol on a Real Engineering Task

> Source: <https://twitter.com/first_tree_ai/status/2082968809414254812>
> Published: 2026-07-31 20:34:23+00:00

Kimi K3 w. context tree beats GPT5.6 SOL

- awesome work
[@Kimi_Moonshot](https://x.com/Kimi_Moonshot) - Using one real issue and publishing the PRs makes this more useful than a model-only benchmark. The remaining trust boundary is the grader. Did a human independently review Claude's scoring against the frozen rubric?