Codex vs Claude Code
302 votes
Leaderboard
Community score for the headline harness matchup.
Harness + model
1
Codex + gpt-5.3-codex
174 votes · 58% vote share · score 94
2
Claude Code + claude-sonnet-4-6
128 votes · 42% vote share · score 91
Harness
1
Codex
174 votes · 58% vote share · score 94
2
Claude Code
128 votes · 42% vote share · score 91