What is the primary purpose of Braintrust?

Braintrust is an evaluation and observability platform that helps AI teams move from 'vibe-based' development to data-driven engineering by providing tools to measure, trace, and improve LLM outputs.

How does Braintrust differ from traditional monitoring tools?

Unlike traditional tools that focus on uptime or latency, Braintrust focuses on 'quality' through automated scoring, prompt versioning, and a tight feedback loop between production data and offline testing.

Is there a free tier available?

Yes, the Starter plan has a $0 platform fee and includes generous usage limits for individual developers and small teams, with on-demand pricing if you exceed the included volume.

Does Braintrust support self-hosting?

Braintrust is primarily a SaaS platform but offers enterprise options for custom data planes and specialized deployment needs to meet strict security requirements.

Can I use Braintrust with any LLM?

Yes, Braintrust is model-agnostic and works with various providers like OpenAI, Anthropic, and Google Gemini, as well as self-hosted models.

What languages are supported by the SDKs?

Braintrust provides official SDKs for TypeScript, Python, Go, Ruby, Java, Kotlin, and C#.

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AI Observability

Freemium

Braintrust

Enterprise AI observability and evaluation platform to trace production, run automated evals, and manage prompts to build high-quality AI products.

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Rating

Reviews

Upvotes

3 months ago

Listed

AI Observability

LLM Evaluation

Prompt Management

AI Development

Regression Testing

Dataset Management

Machine Learning Operations

Software Development

AI Tools

Tool information

Provider

Braintrust Data

Platforms

Web

CLI

Languages

TypeScript

Python

Ruby

Java

Kotlin

API Available

Yes

Added to directory

3 months ago

Last updated

about 1 month ago

Rating

Not available

Pricing

Freemium

About Braintrust

What the tool does and who it's for

Braintrust is an enterprise-grade AI observability and evaluation platform designed to help teams build high-quality AI products. It provides a unified workflow for tracing production traffic, running automated evaluations (evals), managing prompts, and curating datasets. By closing the loop between production logs and offline testing, Braintrust enables developers to catch regressions, compare model performance, and iterate on prompts with data-driven confidence. The platform supports a wide range of LLMs and integrates deeply into the development lifecycle, allowing product managers and engineers to collaborate on scoring functions and quality metrics.

Key capabilities

End-to-end tracing: Capture and visualize complex AI workflows with span-level granularity in production.

Automated Evaluations (Evals): Run regression tests and performance benchmarks using custom or built-in scorers.

Prompt Playground & Management: Version, test, and deploy prompts without hardcoding them into your application.

Dataset Curation: Turn production logs into high-quality datasets for fine-tuning and testing.

Human-in-the-loop: Configurable human review scores and annotation workflows for manual quality assessment.

Cross-functional Collaboration: Shared workspace for PMs and engineers to define rubrics and monitor AI quality.

Real-time Alerting: Quality-aware alerts that fire when evaluation scores drop or drift is detected.

Native SDKs & API: Robust support for popular programming languages and a full REST API for custom integrations.

Pricing

Freemium — plans below

Starter

$0 / month

1 GB processed data included ($4/GB after)
10k scores included ($2.50/1k after)
14 days data retention
Unlimited users and projects
Unlimited datasets and experiments

Pro

Enterprise

Contact sales

Custom usage limits and data retention
SSO and advanced security
Compliance (SOC2, HIPAA, custom DPA)
Dedicated support and shared Slack channel
Annual invoicing

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