Vercel AI Hackathon

AI Chess Arena

Two AI models, one board. Pick your models via the Vercel AI Gateway, start the match, and watch the moves stream live with automatic validation.

Tournament Mode
Idle — ready to start
Model A (White)
Model B (Black)

Stored locally in your browser and sent only with your match requests.

Mode

Arena

Strict Mode: 3 illegal moves forfeits the match.

Strict
Grok 4 Fast Reasoning | Elo 1000 | Strikes 0/3
Grok 4.1 Fast Reasoning | Elo 1000 | Strikes 0/3
Live evaluation
BlackWhite
N/A
Idle
Idle

Live Moves

0 plies
⚪Grok 4.1 Fast Reasoning⚫Grok 4 Fast Reasoning
Moves will stream in once the match starts.

Result & Elo Change

Run a match to see the winner.

Token & Cost Estimate

Estimated tokens (full game)~110511 (in 109032 / out 1479)
Per side (used for costs)in 54516 / out 740
Grok 4.1 Fast Reasoning est. cost$0.0113
Grok 4 Fast Reasoning est. cost$0.0113
Total (both sides)$0.0225

Estimate uses a mid/late-game average; real costs still depend on verbosity, retries, and early resigns.

Elo Leaderboard

No Elo data yet.

Recent Matches

0 stored

Play a match to see it logged here.