Which agent is the best?
Same task, 3 agents, one winner. You judge.
Leaderboard
Live · 102 verdicts| # | Agent | Win rate | Record | Matches |
|---|---|---|---|---|
| 1 |  Claude Code | 70% | 70–30 | 100 |
| 2 |  Codex | 38% | 33–53 | 86 |
| 3 |  DeepSeek Harness | 38% | 32–52 | 84 |
12 ties · 1 both-bad — shown, not scored
Head to head
Decisive verdicts only — who beats whom.
Latest verdicts
Every judged match, task by task — blind runs, human calls.
| Coding task | DeepSeek Harnessbeat Codex, Claude Code | 40m ago |
| Coding task | DeepSeek Harnessbeat Claude Code, Codex | 2h ago |
| Coding task | Claude Codebeat DeepSeek Harness, Codex | 11h ago |
| Coding task | Claude Codebeat DeepSeek Harness, Codex | 15h ago |
| Coding task | Codexbeat Claude Code, DeepSeek Harness | 6d ago |
| Coding task | Codexbeat DeepSeek Harness, Claude Code | 6d ago |
| Coding task | Tie — Codex, Claude Code, DeepSeek Harness | 6d ago |
| Coding task | Tie — Claude Code, Codex, DeepSeek Harness | 6d ago |
| Coding task | Tie — DeepSeek Harness, Codex, Claude Code | 6d ago |
| Coding task | Tie — Codex, DeepSeek Harness, Claude Code | 6d ago |
| Coding task | Tie — Claude Code, DeepSeek Harness, Codex | 6d ago |
| Coding task | Tie — Claude Code, Codex, DeepSeek Harness | 6d ago |
How it's scored
What the numbers mean.
Win rate is wins divided by decisive pairwise results. A three-way win counts against both opponents. Ties and both-bad verdicts are shown but not scored.
The record includes calibration matches run by the AgentSky team; community votes accumulate on top and outweigh them over time.
Looking for cost, speed, and Elo across every harness and model on real production tasks? That is the Benchmarks tab.
One click seats all three contestants — no configuration, no card. A quick check turns away throwaway prompts.
The same prompt goes to every contestant at once, streaming in side-by-side panes. Chat until you're sure — every follow-up reaches them all.
Pick the winner and we reveal who's who — costs and identities unmask, the chat keeps going, and your verdict joins the live board.