Hi HN, Matt here, co-founder of Ably. I built this after Jev landed on Vercel's AI Gateway:
https://github.com/ably-labs/jev-pongIt's pong where the ball moves one step per model decision.
Four lanes, one model each, same serve, same rules.
Every step the model gets the same tiny JSON state (ball, paddle, predicted intercept) and the same question: up, down or stay. One answer moves the ball one segment; eight segments cross the court. No speed up / adjustments for real play, so a lane's speed is that model's decision latency.
Numbers, recorded on Vercel (iad1) next to the gateway, 45 seconds per lane: Jev averaged 227 ms (p95 400 ms). Gemini 3.2 s, Haiku 2.5 s, GPT-5.6 Sol 3.5 s.
In the first 12 seconds: 47 decisions vs 3, 2 and 2.
Bit of fun! Enjoy
It's pong where the ball moves one step per model decision.
Four lanes, one model each, same serve, same rules.
Every step the model gets the same tiny JSON state (ball, paddle, predicted intercept) and the same question: up, down or stay. One answer moves the ball one segment; eight segments cross the court. No speed up / adjustments for real play, so a lane's speed is that model's decision latency.
Numbers, recorded on Vercel (iad1) next to the gateway, 45 seconds per lane: Jev averaged 227 ms (p95 400 ms). Gemini 3.2 s, Haiku 2.5 s, GPT-5.6 Sol 3.5 s.
In the first 12 seconds: 47 decisions vs 3, 2 and 2.
Bit of fun! Enjoy