# How Replit uses Braintrust

**5–10 mins → instant**: “5–10 mins → instant to see traces of user issues”

As published on [braintrust.dev](https://www.braintrust.dev/customers/replit). Captured by usedby on 2026-11-05.

- Company: [Replit](https://www.usedby.ai/companies/replit.md)
- Tool: [Braintrust](https://www.usedby.ai/tools/braintrust.md)
- Industry: [DevTools & Infrastructure](https://www.usedby.ai/companies/industry/devtools-infrastructure.md)
- Teams: Engineering, Support

## The use case: how Replit deploys Braintrust

Replit uses Braintrust as a unified observability layer for its AI agent, streaming traces in real time and aggregating them to find patterns across many user sessions. Engineers and support staff use it to investigate issues, run custom evals to catch regressions, and fix groups of related problems.

Summary written by usedby from the source page, in English. The figures are those of Braintrust and Replit, not ours.

> One of the things that really worked for us is that the Braintrust team helped us optimize the feedback loop so that instead of having to wait five or 10 minutes to see the traces, the moment the user is experiencing pain, we can see the trace immediately.

- **100s**: “100s of production examples surfaced per issue”

> What happens if there are multiple people experiencing the same pain but not expressing it? Having this ability to go beyond a single session and see patterns across the board really helps us fix a whole family of problems.
>
> Luis Héctor Chávez, CTO

Source: [braintrust.dev](https://www.braintrust.dev/customers/replit), captured 2026-11-05.

## Other AI tools used by Replit

- [Campfire](https://www.usedby.ai/tools/campfire.md) — Confirmed
- [Claude](https://www.usedby.ai/tools/claude.md) — Confirmed
- [Common Room](https://www.usedby.ai/tools/common-room.md) — Confirmed
- [Metaview](https://www.usedby.ai/tools/metaview.md) — Confirmed
- [Baseten](https://www.usedby.ai/tools/baseten.md) — Declared by the company
- [Enterpret](https://www.usedby.ai/tools/enterpret.md) — Declared by the company

## Braintrust users in DevTools & Infrastructure

- [Box](https://www.usedby.ai/companies/box.md) — Confirmed
- [Browserbase](https://www.usedby.ai/companies/browserbase.md) — Confirmed
- [Bubble](https://www.usedby.ai/companies/bubble.md) — Confirmed
- [Dropbox](https://www.usedby.ai/companies/dropbox.md) — Confirmed
- [Graphite](https://www.usedby.ai/companies/graphite.md) — Confirmed
- [Retool](https://www.usedby.ai/companies/retool.md) — Confirmed

## What usedby checked

We compared the story with its live page on 2026-11-05.

- Checked: the figure 5–10 mins → instant is printed word for word on the page, near the name of Replit.
- Checked: the passage quoted above is copied word for word from the page, near the name of Replit.
- Checked: Replit uses Braintrust. Confirmed line. Latest check across sources: 2026-11-05.
- Not checked: the result itself. We quote it; we did not measure it.

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Source: https://www.usedby.ai/case-studies/replit-braintrust · How we check: https://www.usedby.ai/methodology