- Free tier: 5,000 tokens/month, monthly reset, no card. HN readers who sign up and email me from the signup address get a one-time +10,000 tokens. - Paid: $10 Basic / 10K, $29 Pro / 50K, up to $999 Enterprise XL. - Demos rate-limited to 5 runs/day/IP — playable without an account. - Single region (Hetzner Falkenstein DE). No SLA on free tier. - Engine is closed-source Rust; the math is open on Zenodo. You can reimplement from the paper in ~150 lines of Python. - The comparative_analysis.csv (ZPL vs Conway / Ising / Majority Vote CA) is included in the Zenodo dataset.
Happy to walk through the attractor model, the CA benchmarks, or any of the demos.