---
title: Open Quantum Challenge
emoji: ⚛️
colorFrom: indigo
colorTo: blue
sdk: docker
app_port: 7860
pinned: false
license: mit
hf_oauth: true
short_description: GPU + harness only. Two quantum seasons, $1000 each.
---

# Open Quantum Challenge (OQC)

A vendor-neutral, fully reproducible quantum benchmark challenge. Enter with **just a GPU and the open
harness — no quantum hardware required.** Answers are held privately and every submission is auto-scored
against a frozen ground truth.

- **Season 1 — Quantum Simulation** (Fermi-Hubbard ground-state energy). Opens 2026-10-11, deadline 2027-02-28.
- **Season 2 — QEC Decoder** (rotated surface code d=5, p=0.005, logical error rate). Opens 2026-10-11, deadline 2027-03-31.
- Prize: $1,000 per season (🥇600 / 🥈300 / 🥉100).

Public inputs: `FINAL-Bench/oqc-data`. Harness: `github.com/final-bench/quantum-bench-harness`.
Leaderboard: `FINAL-Bench/quantum-bench-leaderboard`.

## Architecture (mirrors the Open Discovery Challenge)
Thin intake service. Submissions land in a private ledger dataset (`FINAL-Bench/oqc-ledger`); a GPU-side
worker polls it, scores each entry against the private key, and writes the rolled-up leaderboard back.
Set the Space secret `HF_TOKEN` (write access to the ledger). Optionally set `OAUTH_CLIENT_ID` /
`OAUTH_CLIENT_SECRET` (`hf_oauth: true`) to require Hugging Face sign-in.