Harness comparisons

2 posts from X ran Claude Code and OpenCode on the same task. 1 keep the model fixed; in the rest each side used its own model. Models: Gemini 4 Argon, Claude Opus 5.5, GPT-6 Astra, Kimi K2.5. All harness comparisons.

4 ArgonOpus 5.5GPT-6 Astra

K2.5

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