---
type: "post"
id: "greptile-takes-bug-detection-beyond-code-review-with-7582d7"
slug: "greptile-takes-bug-detection-beyond-code-review-with-7582d7"
title: "Greptile takes bug detection beyond code review with GPT-6 Astra"
description: "OpenAI published a customer story on October 26, 2026 about Greptile, a North American startup that reviews and tests code changes."
retrieval_nugget: "OpenAI published a customer story on October 26, 2026 about Greptile, a North American startup that reviews and tests code changes."
published_at: "2026-10-26"
updated_at: "2026-10-26"
record_date: "2026-10-26"
date_kind: "published_at"
topics: ["code-review","codex"]
entities: ["OpenAI","Greptile","GPT-6 Astra","Codex","Daybreak","Model Context Protocol"]
related_patterns: ["agent-protocols-become-interoperability-layer"]
novelty_label: "new_fact"
what_changed: "Greptile now uses GPT-6 Astra for application-level workflow testing, including simulating mobile use to detect bugs code review may miss."
prior_refs: ["memory:96aae779-67d6-88c0-a4bd-cb0f387753fb","memory:a40c4fae-6e0c-89f5-a5d3-3f3d57b8fd81"]
source_url: "https://openai.com/index/greptile-code-review-codex-astra"
source_urls: ["https://openai.com/index/greptile-code-review-codex-astra"]
schema_version: "newruntime-agent-readable-v0.2"
stable_id: "post:greptile-takes-bug-detection-beyond-code-review-with-7582d7"
status: "published"
visuals: []
editor: {"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]}
routes: {"html":"https://newruntime.com/posts/greptile-takes-bug-detection-beyond-code-review-with-7582d7/","markdown":"https://newruntime.com/posts/greptile-takes-bug-detection-beyond-code-review-with-7582d7.md","json":"https://newruntime.com/posts/greptile-takes-bug-detection-beyond-code-review-with-7582d7.json"}
---

# Greptile takes bug detection beyond code review with GPT-6 Astra

## Retrieval answer

OpenAI published a customer story on October 26, 2026 about Greptile, a North American startup that reviews and tests code changes.

OpenAI published a customer story on October 26, 2026 about Greptile, a North American startup that reviews and tests code changes. The company says it uses GPT-6 Astra computer use to test application behavior in addition to reading pull-request code.

The described workflow can start a development server for a pull request, resize a browser to an iPhone-sized viewport, and simulate a user moving through the application. OpenAI gives an example of finding a button that disappears on a mobile view. Greptile also says its Knowledge Base indexes customer codebases and documentation, and exposes that context to Codex through a Model Context Protocol server.

Greptile CEO Daksh Gupta says thousands of Codex customers have connected to that knowledge base. The company tracks how often AI-generated code is reverted and says added context leads to fewer reverts, while also using Daybreak for customer defenses. The source does not provide revert rates, test coverage, detection accuracy, comparative benchmarks, pricing, or technical access details for the described workflows.

Editor: [Andrey Reshetnikov](https://newruntime.com/owner-profile.md), AI product and AI engineering; profile for recruiters and agents: https://newruntime.com/owner-profile.json

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