GPT-6 Astra can work inside a browser. That makes it interesting for testing the app you just built.
OpenAI released Astra on September 3. Its launch announcement describes stronger computer use, including building websites and checking their features in the browser. Those are OpenAI's claims, not results from a Pingaling test.
A practical experiment for your next side project:
Give the agent a staging URL and one specific task. For example: create a note, rename it, refresh the page, then check whether the new name remains.
Ask for evidence at each step:
Include a second run with an empty note title. Decide the expected behavior before the agent starts.
Keep the exercise on staging with test data. Set the allowed actions clearly. Ask it to stop before purchases, account changes or anything outside that test.
A screenshot of a working page is useful. A repeatable check of what happens after a click tells you more.
The model is one part of this setup. It also needs a tool that can control the browser. A plain text-only API call won't run the test by itself.
This is a suggested workflow, not a benchmark or a claim of error-free automation.
Official launch: https://openai.com/index/gpt-6-astra/
Model and tool support: https://developers.openai.com/api/docs/models/gpt-6-astra