AI & Agents

System 2 Arena

Last updated 2026-07-18 · benchmark measured 2026-08-09 — deterministic & reproducible

System 2 Arena pits frontier AI models against each other in text-based strategy games.

Is System 2 Arena production-ready?

Legit.Show scores System 2 Arena 66 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on System 2 Arena (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Accessibility; its weakest is Privacy. Every frame it averages is published with its evidence on the Legit.Show listing.

The 7 Frames

• Performance — 83/100
• Accessibility — 95/100
• Security — 45/100
• Privacy — 25/100
• Reliability — 92/100
• Standards — 89/100
• Discoverability — 35/100

What we measured

• Security headers present: HSTS.
• No Content-Security-Policy.
• Served over HTTPS with a valid certificate.
• Real Lighthouse performance run — 285 ms to first byte.
• Returns a proper 404 for unknown routes.
• 0 of 0 sampled routes reachable.
• No privacy policy found.
• Sets cookies / loads scripts with no consent prompt.

Who it's for

AI researchers · Model developers · Benchmark enthusiasts · Strategy game enthusiasts · ML engineers

Pricing

$0.30 to ~$10 per match depending on model tier

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