---
title: "Bugbot is now over 3x faster, 22% cheaper, and finds 10% more bugs"
description: "Bugbot has been updated to run over three times faster, cost 22% less, and find 10% more bugs per review; 90% of runs now finish in under three minutes. The /review command lets users run Bugbot or Security Review before pushing code, while /review-bugbot and /review-security invoke those agents directly. Reviews run through /review sync with Bugbot on GitHub and GitLab, allowing a matching pull-request diff to skip a duplicate review, and Bugbot can now be configured to inspect only changes since its last review. The gains come from harness improvements and training Composer 2.5, which powers Bugbot; organizations opting out of that model use the next best available model, with speed and performance varying by configuration."
---

# Bugbot is now over 3x faster, 22% cheaper, and finds 10% more bugs

[Cursor](https://yomu.fyi/company/cursor) · Jason Smale, Yuri Volkov & Michael Zhao · Jun 10, 2026

**Type:** Announcement

## Summary

Bugbot has been updated to run over three times faster, cost 22% less, and find 10% more bugs per review; 90% of runs now finish in under three minutes. The /review command lets users run Bugbot or Security Review before pushing code, while /review-bugbot and /review-security invoke those agents directly. Reviews run through /review sync with Bugbot on GitHub and GitLab, allowing a matching pull-request diff to skip a duplicate review, and Bugbot can now be configured to inspect only changes since its last review. The gains come from harness improvements and training Composer 2.5, which powers Bugbot; organizations opting out of that model use the next best available model, with speed and performance varying by configuration.

## Context

The update aims to make Bugbot faster, less expensive, and more thorough so issues can be found sooner and code merged faster. Re-reviewing an entire pull request after every pushed change could also produce new flags on code that Bugbot had already reviewed and approved.

## Approach / What changed

The release improves Bugbot's harnesses and training for Composer 2.5, adds pre-push review commands, synchronizes those reviews with Bugbot on GitHub and GitLab, and supports reviewing only changes since the previous review. Organizations that opt out of Composer 2.5 automatically fall back to the next best available model.

## Takeaways

- Bugbot runs are over three times faster, cost 22% less, and find 10% more bugs per review; 90% finish in under three minutes.
- The /review command can run Bugbot or Security Review before code is pushed, and matching diffs later opened as pull requests can skip a duplicate Bugbot review.
- Bugbot can be configured to review only changes since its last review instead of the entire pull request; Composer 2.5 powers the improvements, with automatic fallback for organizations that opt out.

**Tags:** [Code Review](https://yomu.fyi/topic/code-review), [Cursor](https://yomu.fyi/topic/cursor), [Performance](https://yomu.fyi/topic/performance), [Pricing](https://yomu.fyi/topic/pricing)

- Source: [Cursor](https://cursor.com/blog/bugbot-updates-june-2026)
- Source URL: https://cursor.com/blog/bugbot-updates-june-2026
- Ingested by Yomu: 2026-09-02T11:42:29.508Z

[Read original post](https://cursor.com/blog/bugbot-updates-june-2026)