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# How we built an AI-powered code reviewer in 80 hours


- **Date:** Friday, Jul 11, 2025
- **Time:** 16:20–16:50 (30 min)
- **Room:** Stage 2
- **Event:** World Congress 2025
- **Tags:** ai, aws, llms, node.js, serverless

## Recording

[Watch recording](https://www.wearedevelopers.com/videos/1511-how-we-built-an-ai-powered-code-reviewer-in-80-hours)

## Description

How hard can it be to build an AI-powered code reviewer using modern LLMs? Easier than you think—until it isn’t.

In late 2024, I helped a client launch an AI-powered code reviewer. We built the initial prototype in the first few hours. But we soon encountered many unexpected challenges as we tried to productionize the idea into a coherent user experience.

In this session, let me tell you the surprises, challenges, and lessons learned from building an AI-powered code reviewer and what it tells us about the current state of LLM technologies.

## Speaker

### [Yan Cui](https://www.wearedevelopers.com/@yan-cui)

Developer Advocate at Lumigo


## Related talks at this congress

- [Three years of putting LLMs into Software - Lessons learned](https://www.wearedevelopers.com/events/world-congress-2025/sessions/561-three-years-of) — Simon A.T. Jiménez
- [ Evaluating AI models for code comprehension](https://www.wearedevelopers.com/events/world-congress-2025/sessions/723-evaluating-ai-models) — Merrill Lutsky
- [AI-Powered Code Documentation: Simplify the Complex](https://www.wearedevelopers.com/events/world-congress-2025/sessions/719-ai-powered-code) — Patrick Schnell
- [ The Limits of Prompting: ArchitectingTrustworthy Coding Agents](https://www.wearedevelopers.com/events/world-congress-2025/sessions/637-the-limits-of) — Nimrod Kor