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AI Web Apps·Freemium

Braintrust

Evaluation, prompt playground, and observability for LLM apps in production.

What is Braintrust, in two sentences

Braintrust is an evaluation, prompt playground, and observability for LLM apps in production. Provides evaluation, prompt playground, and observability tools for LLM applications in a single platform.

About Braintrust

Braintrust is a platform providing evaluation, a prompt playground, and observability for LLM applications in production.

It combines evaluation, a prompt playground, and observability in one platform. It supports bring-your-own-key integration with multiple LLM providers, ships an open-source SDK for instrumenting LLM apps, and runs entirely in the browser without local installation.

It fits teams building and running LLM apps who need to test prompts, measure quality, and trace behavior in production. The free tier is subject to usage limits on evaluations and traces, and it is web-only with no dedicated IDE or desktop extension.

Sources: this listing

Braintrust pros and cons

Pros

  • Provides evaluation, prompt playground, and observability tools for LLM applications in a single platform.
  • Supports bring-your-own-key integration with multiple LLM providers.
  • Offers an open-source SDK for instrumenting LLM applications.
  • Runs entirely in the browser without requiring local installation.

Cons

  • Free tier is subject to usage limits on evaluations and traces.

Tagged

  • Bring Your Own Key
  • Web-based
  • Enterprise Plan
  • Free
  • Freemium
  • Open Source

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Frequently asked questions

What is Braintrust?
Braintrust is an evaluation, prompt playground, and observability for LLM apps in production.
Is Braintrust free?
Braintrust offers a free tier and paid plans with higher limits or premium features.
What platforms does Braintrust support?
Braintrust runs on web.
What are the alternatives to Braintrust?
Similar tools in AI Web Apps on vibedonalds: Crustdata Recruiter, V2Fun, Babel Nexus, Agentcard for companies.
What are the downsides of Braintrust?
Free tier is subject to usage limits on evaluations and traces.