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How Bubble uses Braintrust

ConfirmedVendor case study · Checked Oct 25, 2026
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The use case: how Bubble deploys Braintrust

Bubble's AI team uses Braintrust to run evals on its app-building Agent, scoring quality, latency and cost against datasets and comparing experiments when changing code or swapping models. They also use the Braintrust CLI with coding agents to triage production traces and open fixes and tickets automatically.

In the customer’s words

In the couple of weeks leading up to this launch, we were plugging in new models very regularly. Braintrust has given us the ability to make those decisions with confidence, about which model to move forward with.
Zach Tessler, Senior Engineering Manager, Bubble — Source

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Based on Braintrust’s published case study. We check the public evidence; the results are reported by the vendor.

braintrust.dev
Last checked
Oct 25, 2026
braintrust.devCaptured Braintrust case study about BubbleOpen source capture
What the story claims, and what we checked

What we compared with the page.

  • The figure: 1.5xChecked

    The figure is on the page; its label is our wording.

  • The passage quoted aboveChecked

    Copied word for word from the page, near the name of Bubble.

  • Bubble uses BraintrustChecked

    Confirmed line.

  • The result itselfNot checked

    We quote it; we did not measure it.

Bubble recently launched Agent 2, a completely new version of its core app-building Agent. It's 1.5 times more accurate than its predecessor at visually representing user prompts, while also performing faster and more cost efficiently.
From the page. braintrust.dev