# Jia Labs

- **Event:** [The Harness Engineering & Model Wrangling Hackathon](https://cerebralvalley.ai/e/mongodb-nyc-hackathon)
- **When:** Sat, Sep 26 at 9:00 AM – 10:00 PM (EDT)
- **Where:** New York, NY
- **Team:** [Henry Liu](https://cerebralvalley.ai/u/codicate), [Suchith Hegde](https://cerebralvalley.ai/u/suchithhegde)
- **GitHub:** https://github.com/suchithh/anchor
- **Demo video:** https://cap.so/s/bp5q34pqt9s676r
- **Gallery:** https://cerebralvalley.ai/e/mongodb-nyc-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/mongodb-nyc-hackathon/hackathon/gallery/88

Frontier models can work for hours, but one hallucination can snowball into bad plans, tool calls, and wasted spend.
Existing validation often catches this too late, while a live reviewer subagent adds major latency and cost.
We built the middle ground: a harness with a live grounding score that triggers deeper RAC-style verification against ground truth data such as documentation only when needed. In our first benchmark, Jev was ~22× faster and ~20× cheaper than the control while maintaining same level of accuracy compared to ground truth.

## More from The Harness Engineering & Model Wrangling Hackathon

- [satyam](https://cerebralvalley.ai/e/mongodb-nyc-hackathon/hackathon/gallery/85)
- [Flake](https://cerebralvalley.ai/e/mongodb-nyc-hackathon/hackathon/gallery/86)
- [rekurse](https://cerebralvalley.ai/e/mongodb-nyc-hackathon/hackathon/gallery/87)
- [Wrasse](https://cerebralvalley.ai/e/mongodb-nyc-hackathon/hackathon/gallery/89)
- [Reconcile](https://cerebralvalley.ai/e/mongodb-nyc-hackathon/hackathon/gallery/90)
- [Pheonix](https://cerebralvalley.ai/e/mongodb-nyc-hackathon/hackathon/gallery/91)

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Markdown version of https://cerebralvalley.ai/e/mongodb-nyc-hackathon/hackathon/gallery/88. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt