The goal: an AI code review agent, for every developer
Bito’s Code Review Agent is built to understand structure and logic across real-world code. It analyzes diffs, reads abstract syntax trees, traces variable and method relationships, and surfaces suggestions that actually help. It comments on code quality, security risks, maintainability, and missing validations.
To make that available in a free plan, the reviews had to remain fast and accurate while running on a model that could scale with predictability.
“Our goal is to make high-quality code review accessible to every developer. Nova Lite made it possible to keep the experience fast and accurate, even for users on the free plan.”
— Amar Goel, CEO at Bito
What Bito needed from a model
Our Code Review Agent does not just summarize or suggest edits. It performs a structured analysis across the pull request, evaluates different parts of the codebase, and generates multi-part output in real time. That includes:
- Pull request summaries
- In-line review comments across multiple files
- Identifying issues like tech debt, validation gaps, duplicated logic, memory leaks, and missed security checks
- Incremental reviews across multiple commits
To support this in a high-volume free tier, we needed:
- Fast, consistent inference latency
- High-quality output for structured reasoning
- Predictable cost profiles as usage scales
- A reliable endpoint integrated directly with our backend infrastructure
Why Bito chose Amazon Nova Lite
When Nova Lite became available through Amazon Bedrock, we tested it head-to-head with other models. It performed well across key tasks: reviewing diffs, generating comment suggestions, summarizing PRs, and doing so with speed.
Nova Lite allows Bito to serve real code reviews for free-tier users, with latency low enough to deliver comments in under 30 seconds per PR, and with consistency across different code types and sizes.
“Nova Lite enabled us to offer high-quality reviews to our free-tier customers, without needing to cut corners on quality or speed.”
— Amar Goel, CEO at Bito
We integrated Nova Lite using Amazon Bedrock and used it to power free-tier requests directly inside GitHub, GitLab, and Bitbucket.
How it works behind the scenes
Every time a developer submits a pull request, Bito triggers a multi-step review pipeline:
- We parse the diff and convert the code into a structured AST
- Our agents analyze syntax, logic, flow, and context
- Review suggestions are generated by a combination of internal orchestration and LLMs, now including Nova Lite
- We post review comments directly to the PR, along with a summary and file-by-file breakdown
This process happens in real time and adapts based on the complexity and size of the PR. We run different model types for different types of suggestions, and Nova Lite is now a core part of that inference engine, especially for high-volume free users.
Why this matters
With Nova Lite powering inference in production, we were able to expand access to individual developers through a fully functional free tier.
This free plan runs the same review engine used by engineering teams at companies like PubMatic and Gainsight. It delivers fast, actionable feedback with the same core logic, model orchestration, and quality as our enterprise version.
“With Amazon Bedrock and Amazon Titan, we’ve seen amazing latency performance, which has allowed us to improve the user experience and reduce costs.”
— Amar Goel, CEO at Bito
Developers do not get a trial or a stripped-down version. They get full access to in-PR reviews that help improve code.
Developer-first by design
Bito’s mission is to help developers write better code with less friction. That means fast suggestions, useful feedback, and tools that fit the way engineers work. Not just chatbots or boilerplate completion, but real logic review, built into the workflow.
Amazon Nova Lite helped us expand that mission without sacrificing quality or speed. It powers a free tier that brings serious code review to more developers.
