What is Braintrust?
Building applications with Large Language Models (LLMs) presents unique challenges, from unpredictable outputs to a lack of structured testing. Braintrust is the end-to-end evaluation platform designed for AI teams to overcome this complexity. We provide the tools you need to develop, test, and monitor your LLM-powered products with engineering discipline, ensuring you ship applications that work reliably in the real world.
Key Features
Braintrust provides an integrated suite of tools designed to bring clarity and control to your AI development lifecycle.
📊 Comprehensive Model & Prompt Evaluation Stop guessing and start measuring. You can systematically compare different prompts and models (from providers like OpenAI, Anthropic, and Google) against your datasets. Use industry-standard or custom-built scorers to generate objective, quantifiable metrics on quality, cost, and latency, allowing you to make data-driven decisions.
🧪 Interactive Development Playground Accelerate your iteration cycle in a powerful, collaborative workspace. The playground allows you to rapidly prototype and test different prompts, models, and data combinations side-by-side. This helps you quickly build hypotheses and find what works without a complex, time-consuming setup.
🗂️ Centralized & Versioned Datasets Establish a single source of truth for all your evaluation data. You can capture, manage, and version your "golden" test cases and rated production examples in one secure, scalable location. This ensures your team can run consistent and reproducible evaluations every time.
📈 Production Logging & Monitoring Gain critical visibility into how your application performs after deployment. Braintrust allows you to log and analyze real-world interactions, providing actionable insights to debug issues, identify new edge cases, and continuously improve your product's quality based on actual user behavior.
How Braintrust Solves Your Problems:
Braintrust is built to address the practical, day-to-day challenges of building with AI. Here’s how you can put it to work:
Improving an Underperforming AI Feature: When users report issues with an AI-powered feature, you can use Braintrust to log the problematic interactions. Curate these examples into a new evaluation dataset, then use the Playground to experiment with improved prompts or different models. Finally, run a full evaluation to compare the new version against the old, ensuring your fix is a measurable improvement before you ship it.
Comparing LLM Providers for a New Task: Choosing the right model is critical for performance and cost. With Braintrust, you can set up a single experiment to run the same prompts and dataset against models from multiple providers. The evaluation results give you a clear, side-by-side comparison of accuracy, speed, and cost, enabling you to make an informed, evidence-based decision for your specific use case.
Ensuring Quality in Your CI/CD Pipeline: Integrate Braintrust evaluations directly into your development workflow using the SDK. Just as you run unit tests for traditional software, you can run AI evaluations automatically with every code change. This helps you catch regressions early and ensures that every update maintains or improves the quality of your AI application.
Unique Advantages
A Truly End-to-End Workflow: Braintrust’s power comes from the seamless integration of its tools. The platform creates a continuous feedback loop, allowing you to move from logging a production issue to creating a test case, iterating in the playground, and deploying a validated improvement with confidence.
Built for the Modern Engineering Stack: We understand that AI development is a team sport that must fit into existing processes. With a powerful SDK (TypeScript/Python), robust APIs, and self-hosting options for maximum data control, Braintrust is designed to augment your engineering stack, not disrupt it.
Conclusion:
Braintrust replaces the guesswork of AI development with a structured, iterative, and data-driven process. It empowers your entire team—from developers to product managers—to collaborate effectively and ship higher-quality AI products with confidence.
Explore how Braintrust can bring reliability and precision to your AI development lifecycle!
More information on Braintrust
Launched
2023-03
Pricing Model
Freemium
Starting Price
$249 / month
Global Rank
196333
Follow
Month Visit
174.6K
Tech used
Next.js,Vercel,Webpack,HSTS
Top 5 Countries
60.41%
7.54%
2.36%
2.26%
1.63%
United States
India
United Kingdom
France
Belgium
Traffic Sources
3.99%
0.53%
0.13%
10.59%
31.36%
53.36%
social
paidReferrals
mail
referrals
search
direct
Source: Similarweb (Sep 24, 2025)
Braintrust was manually vetted by our editorial team and was first featured on 2023-09-30.
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