Greptile brings code review into application testing with GPT‑6 Astra
Greptile is using GPT‑6 Astra’s computer-use and visual-understanding capabilities to test pull requests in running applications and find interface defects that static code review can miss.
AT A GLANCE
Key points
- GPT‑6 Astra can run a pull request’s application and simulate user workflows.
- Visual inspection can expose responsive-interface defects that code reading may miss.
- Greptile shares repository context with Codex through an MCP server.
What is changing?
According to OpenAI’s October 26 customer story, Greptile uses GPT‑6 Astra to test code changes in a running application instead of only reading the source. The system can start a development server for a pull request, resize the browser to a phone-sized viewport, and simulate a user flow. In OpenAI’s example, the model visually identifies a button that disappears in an iPhone view.
Greptile also exposes its Knowledge Base to Codex through an MCP server. CEO Daksh Gupta says thousands of customers have connected Codex to the knowledge base, with the goal of helping generated code follow existing patterns and reducing reverted changes. The company is evaluating Daybreak to strengthen security defenses and Ultrafast to accelerate the path from an idea to working software.
Explore the original sources
Source date: 26 October 2026.
Published by AI Radar: 27 Oct 2026, 02:01 (Istanbul, UTC+3).
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