A Codex harness user says OpenAI’s assistant is less smart-sounding but more decisive
McDonaghMatthew · x · 2026-07-21
The author says the best thing about 5.6 through the Codex harness is not raw intelligence, but composure.
They describe a difference in working style: OpenAI’s tool reportedly pushes back with suggestions like “that’s not the best move you can make” and helps find a better path forward, while Anthropic’s Claude is characterized as overly agreeable. The post frames this as a practical preference for a more opinionated coding assistant.
A reply in the thread adds that the author had just converted a colleague from Claude Cowork to ChatGPT Work, reinforcing the workflow angle rather than the model-as-product angle alone.
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