# HB Innovators

- **Event:** [Meta Global AI Developer Hackathon](https://cerebralvalley.ai/e/meta-ai-developer-hackathon)
- **When:** Oct 26, 12:00 PM – Nov 4, 9:00 PM (EST)
- **Where:** Online
- **Team:** [HIMANSHU SUTHAR](https://cerebralvalley.ai/u/himanshu12)
- **GitHub:** https://github.com/Himanshu90909/truthsearch-production
- **Demo video:** https://youtu.be/ITE3QFuJn9s
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/35

TruthSearch is a Perplexity-style AI research engine built for Bharat. Indian students and self-learners ask questions in Hindi and Hinglish, but existing AI search tools answer only in formal English, bury sources behind paywalls, and rarely verify what they cite. TruthSearch fixes this with an agentic research loop: it plans queries, runs live web searches (DuckDuckGo, arXiv, Wikidata, World Bank), browses and extracts passages, ranks them with BM25 + local semantic embeddings, verifies every citation against the actual retrieved page, and only then synthesizes the answer. Each answer includes mandatory sections: Direct answer, Why it happens (causal analysis), Evidence and sources, Conflicting evidence, Limitations, and Suggested follow-ups, with [n] citations and "model knowledge" provenance labels so readers always know what is sourced versus what the model filled in. It answers naturally in Hindi/Hinglish or English, matching the question's language. A single-backend architecture with no model picker keeps the UX clean, and a multi-provider chain with automatic failover keeps it always live. The result: a research engine that feels like it was built for an Indian student, not translated for one.

## More from Meta Global AI Developer Hackathon

- [WaravutVisual](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/32)
- [Toin](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/33)
- [Guitarwiter](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/34)
- [paper-bro](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/36)
- [Ali Baba](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/37)
- [Muze AI Labs](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/38)

---

Markdown version of https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/35. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt