AI software engineering platform Braintrust has completed a $36 million Series A funding round.

The AI software engineering platform Braintrust has completed a $36 million Series A funding round, led by Martin Casado of Andreessen Horowitz, with participation from existing investors Elad Gil, Greylock, Basecase, Datadog, Databricks Ventures, Guillermo Rauch (Vercel), Simon Last (Notion), Bryan Helmig (Zapier), and others. This funding round brings Braintrust's total funding to $45 million. Braintrust is dedicated to addressing challenges in the development of large language models (LLMs), such as non-deterministic models and the unpredictability of natural language input. The platform collaborates with top teams from Notion, Stripe, Airtable, and others to help users improve the quality of AI products through continuous experimentation. Braintrust user teams conduct over 10 experiments daily on average. Additionally, Braintrust has launched a new feature called "Functions," which allows users to create tools, prompts, and scorers directly in their codebase and upload them to the platform through simple commands, optimizing the experimentation and deployment process while reducing infrastructure management time. It is important to note that, despite sharing the same name as the Web3 talent network Braintrust, they are two separate companies.