Find the best. Catch the worst.
A safety engine for systems where every test is slow and one mistake is expensive. It finds designs that never break a limit, and catches failures before anyone else does.
The best design that never breaks the physics.
A fusion plasma has to stay stable and inside every engineering limit, or it escapes. Each check of one design takes 81 seconds on a supercomputer, so nobody can try them all. Eppy chose which designs to test.
Official results, Proxima Fusion ConStellaration leaderboard, 23 Oct 2026. Also in quantum: 1.6× fewer logical errors than the qLDPC challenge’s own circuit.
The failure no score shows.
AI models change every few weeks: new versions, new hardware, new serving software. The scores often look fine while the answers quietly break. Eppy hunts for those breaks.
A serving bug corrupted the text IDs that 103 of 114 shopping tasks depend on. Found in the first run of our audit, from the logs. One-line fix.
A 65-year-old is losing weight and gets weak climbing stairs, but the weakness eases after a little exercise. Most likely cause?
Compressing a medical AI changed about 1 in 6 exam answers, while the score went from 47% to 50%.
Pre-registered test on 10 real model changes, 48 tests each; best published method: APT (Locatelli et al., 2016). Rare-failure result: Tail-Influence Sampling, arXiv 2609.38096. Medical result: research benchmark, not medical advice.
Every test chosen. Every result verified.
Both chapters run on the same engine. It spends each slow test where it teaches the most, learns where your limits are, and only hands back results that pass them.
run so far
Send us your hardest test.
Send us your test and your current best. We’ll tell you quickly whether Eppy can help, then run the campaign and hand back a verified result.
- Fusion, quantum and engineering
- AI models, agents and serving
- Verified on your evaluator
