Replit + Codex - Beta Release

Barron Webster

Update: To stay up to date on Replit and AI, check out our Ghostwriter Beta & AI mode announcement. In it we discuss how we infused state-of-the-art intelligence into nearly all IDE features as well as the future of AI on Replit.

codex example gif
codex example gif

At Replit, one of our fundamental goals is to make programming easier.

When we got a first glimpse at OpenAI's new Codex model, our instinct was to think of how it could help people understand programs better—especially beginners.

We've tested ideas before that used OpenAI's more general model, GPT-3, to ask questions about code. Amjad wrote about some of these explorations on our blog last year.

So we're very excited to partner with OpenAI to start beta testing Codex-powered features across Replit.

Code explanation

If you're on our hacker plan, or you use Teams for Education for higher ed, you'll soon see Codex-powered features available to you.

The first feature you'll see is called Explain Code. It lets you select any code in JavaScript and Python files and ask Codex to explain it for you. Ever forked a project, or been looking through a library, and been unsure what the code you're looking at actually does? This is for you.

Here's how it works.

Explain Code feature
Explain Code feature
  • Highlight some code (full blocks work best, like a whole function or declaration)
  • Click "Explain Code"
  • See if the explanation is good! Because these features rely on an ML model, the results won't always be perfect. So we also ask if the explanations the model generates are good, which helps us understand where the model performs best.

Coming soon

There are a few other features we're testing, that we might release into beta soon. For example, asking Codex to explain why parts of code aren't working the way you might expect. Or using Codex to explain confusing compiler errors. Or formatting code by talking to it.

Where we're going

There are lots of ways we could use Codex features across Replit — this is just the start. We hope that releasing these beta features helps us understand where and how AI can be useful for people on their programming journey.

Want to try some of these beta features? Sign up for our hacker plan. Have an idea for a Codex-powered feature you'd love to see? Feel free to tweet at us @Replit.

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