Alternatives to Braintrust

AFIT verdict

Langfuse is a production-proven, MIT-licensed LLM engineering platform that scales to billions of monthly events using a ClickHouse OLAP backend. It is ideal for teams building agentic workflows and LLM applications who want full data control via self-hosting, though it requires hosting infrastructure (Docker, Kubernetes) to run at scale.

AFIT verdict

Suitable for developers and teams building RAG pipelines and agentic workflows who want to transition from qualitative evaluations to objective metrics using OpenTelemetry traces or a Python SDK. The main catch is that the source text does not mention any limitations, performance overheads, or resource requirements.

AFIT verdict

Suitable for enterprise development teams building and scaling complex LLM applications, RAG systems, and autonomous agents that require real-time observability, hallucination detection, and safety guardrails. The catch is that it is a commercial platform (SaaS/VPC/On-Premise) without a fully open-source tier, though it reduces LLM-as-judge costs by distilling evaluations into smaller Luna models.

AFIT verdict

Practitioners looking for LLM observability, routing, and prompt management tools should try Helicone. The catch is that it has recently joined Mintlify and requires a paid plan after a 7-day free trial.