Comment by gkfasdfasdf

Having used both Anthropic and OpenAI models at $work via copilot extensively, I have to say GPT 5.5 currently is best at getting work done with minimal mistakes. However, Claude Code is way ahead of OpenAI Codex in terms of harness features and tooling. MCPs, skills, sub agents, these all were pioneered in Claude Code first. Perhaps that contributed to Anthropic's success.