Test finds models get no consistent edge from their own native CLIs

zainhas · x · 2026-08-19

A comparison shows pairing models with their native harnesses (GPT with Codex, Opus/Sonnet with claude-code, Kimi K3 with kimi-cli) gave no consistent edge. The "official first-party toolchain" isn't inherently stronger than third-party harnesses — don't pick your agent tool based on that assumption.

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