Compare 3 reviewed substitutes for Braintrust
View Braintrust profile →Start with the strongest matches, then expand or search the complete category.
LLM tracing and evaluation built on OpenTelemetry — run it in a notebook, a container or the free Phoenix Cloud tier, and keep the same spans when you move to Arize's commercial platform. Source-available under the Elastic Licence 2.0, not OSI open source.
Open-source LLM observability that starts as a one-line proxy change — request logging, caching, rate limiting and cost tracking, with an async SDK for teams that will not route traffic through a gateway.
Open-source LLM engineering platform — tracing, prompt management, evaluation and cost analytics for AI applications, self-hosted from one container or run as Langfuse Cloud.
The top alternatives to Braintrust include Arize Phoenix, Helicone, Langfuse. These observability & monitoring tools offer similar functionality with different pricing, features, and architectural approaches.
Braintrust offers a free tier with limited features. Paid plans are available for additional functionality.
Consider your team size, budget, technical requirements, and existing stack. Compare features like scalability, integrations, pricing model, and community support. Our side-by-side comparison pages can help you evaluate specific pairs.
Braintrust is a observability & monitoring tool. It competes with Arize Phoenix, Helicone, Langfuse in the observability & monitoring space.