AI Harness Leaderboard

The definitive ranking of real AI model + harness combinations. Ranking AI model + harness combinations across coding, reasoning, and autonomy.

#1 Overall Score76.9Claude Code

#	Harness	Type	Score	Top Model	Pricing
1	Claude Code	🔒 Closed	76.9	Claude Opus 4.6	Included with Claude subscription
2	Roo Code	🔓 Open	76.1	Claude Opus 4.6	Open-source VS Code extension
3	Devin	🔓 Open	74.7	Claude Opus 4.6	Free tier + $20/mo pay-as-you-go
4	Kilo Code	🔓 Open	74.3	Claude Opus 4.6	Open-source VS Code/JetBrains extension
5	Hermes Agent	🔓 Open	72.6	Claude Opus 4.6	Open-source, self-hostable
6	OpenClaw	🔓 Open	72.6	Claude Opus 4.6	Open-source
7	Cline	🔓 Open	72.1	Claude Opus 4.6	Open-source VS Code extension
8	Antigravity	🔑 Semi-Open	70.5	Claude Opus 4.6	Beta access — pricing TBD
9	Augment Code	🔓 Open	70.0	Claude Opus 4.6	Open-source
10	Aider	🔓 Open	68.4	Claude Opus 4.6	Open-source, terminal-native
11	Amazon Q Developer	🔒 Closed	64.7	Claude Opus 4.6	Included with AWS subscription
12	Windsurf	🔑 Semi-Open	64.4	Claude Opus 4.6	$15/mo Pro, $30/mo Enterprise
13	Cursor	🔑 Semi-Open	62.0	Claude Opus 4.6	$20/mo Pro, $40/mo Enterprise
14	Copilot Workspace	🔒 Closed	60.7	Claude Opus 4.6	Included with GitHub subscription
15	Codex CLI	🔒 Closed	51.1	GPT-5.4	Included with OpenAI subscription

🔓Open — BYOK, any provider🔑Semi-Open — BYOK with constraints🔒Closed — fixed model set

Scores updated daily · Benchmark-derived with harness-specific adjustments · Not affiliated with any harness vendor