# Bugbot Gets Major Speed and Cost Upgrades
_Cursor's Bugbot sees major speed, cost, and detection upgrades, making AI code review faster and more efficient._
**Published:** 2026-06-10
**Source:** https://www.startuphub.ai/ai-news/technology/2026/bugbot-gets-major-speed-and-cost-upgrades
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Cursor's AI code assistant, Bugbot, has received its most significant update yet, promising substantial improvements in speed, cost, and bug detection. According to the [Cursor Blog](https://cursor.com/blog/bugbot-updates-june-2026), the tool is now more than three times faster, 22% cheaper, and identifies 10% more bugs during code reviews. This translates to faster development cycles and potentially fewer post-merge issues.

Bugbot Speed/Cost UpgradesDriver

AI code review now over 3x faster and 22% cheaperFrom the articleCursor's AI code assistant, Bugbot, has received its most significant update yet, promising substantial improvements in speed, cost, and bug detection.Improved Bug DetectionEffectIdentifies 10% more bugs during code reviewsFrom the articleCursor's AI code assistant, Bugbot, has received its most significant update yet, promising substantial improvements in speed, cost, and bug detection.Composer 2.5CoreUnder the hood technology driving performance enhancementsFrom the article 2 mentionsThese performance gains are attributed to underlying harness improvements and advancements in training Composer 2.5, the AI model now powering Bugbot.90% Under 3 MinutesOutcomeFrom the articleNinety percent of Bugbot runs now complete in under three minutes, a critical metric for developers seeking immediate feedback.enablesFaster Development CyclesEffectEnables quicker integration of code changesFrom the articleThis translates to faster development cycles and potentially fewer post-merge issues.facilitated byRun Bugbot Before PushContextNew /review command for preemptive code scanningFrom the article 3 mentionsA new command, /review, allows developers to initiate Bugbot and Security Review checks before committing code.results inReduced Post-Merge IssuesOutcomeCatching errors earlier minimizes production problemsFrom the articleThis translates to faster development cycles and potentially fewer post-merge issues.
Ninety percent of Bugbot runs now complete in under three minutes, a critical metric for developers seeking immediate feedback. The enhanced [Bugbot performance improvements](/ai-news/technology/2026/bugbot-learns-from-live-code-reviews) aim to accelerate code integration by finding issues earlier.

## Run Bugbot Before You Push

A new command, `/review`, allows developers to initiate Bugbot and Security Review checks before committing code. Users can select specific agents or run Bugbot and Security Review individually via `/review-bugbot` and `/review-security` respectively. This preemptive scanning helps catch errors prior to code submission.

The `/review` command also integrates with GitHub and GitLab. If a pull request contains the same code diff as a prior `/review` run, Bugbot will recognize it, skip the redundant analysis, and note the existing review. This functionality is available in Cursor 3.7+ and on cursor.com/agents, with CLI support expected soon.

## Focus Reviews on New Code

Bugbot previously re-analyzed entire pull requests with each update, which could lead to flagged issues in previously approved code. The updated system can now be configured to analyze only new changes since the last review, ensuring feedback remains focused on recent modifications.

This targeted approach streamlines the [Bugbot code review](/ai-news/technology/2026/bugbot-ditches-per-seat-fees-for-usage-billing) process.

## Under the Hood: Composer 2.5

These performance gains are attributed to underlying harness improvements and advancements in training Composer 2.5, the AI model now powering Bugbot. This continuous model training is central to Bugbot's ongoing development.

Organizations can manage model usage via blocklists; opting out of Composer 2.5 will cause Bugbot to default to the next best available model. Actual performance may vary based on individual configurations, similar to how other platforms like [PlanetScale Taps AI for Code Review](/ai-news/technology/2026/planetscale-taps-ai-for-code-review) leverage AI.

The update also builds on previous enhancements, such as the introduction of [Cursor Automations Go Live](/ai-news/technology/2026/cursor-automations-go-live).
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Original analysis from [startuphub.ai](https://www.startuphub.ai), the #1 AI startup directory.