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  1. Home
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  3. Alternatives to Braintrust
Braintrust

Best Alternatives to Braintrust

Observability · 8 alternatives ranked of 36 in the category

Looking for alternatives to Braintrust? These are the observability tools that score highest on adoption, reviews, benchmarks, and public code, with what separates each one from Braintrust.

Langfuse logo
Langfuse

Observability· langfuse.com

Freemium

Open-source LLM engineering platform for tracing, evals, prompt management, and metrics so teams can debug and improve production AI applications.

34,826

How each alternative differs from Braintrust

Ranked by adoption, review, benchmark, and repository signals. Each note below is drawn from the two products’ own catalog records, so a product with nothing to separate it from Braintrust carries no note.

  1. 1

    Langfuse

    Langfuse is listed as open source, while Braintrust is not and carries 35k GitHub stars to Braintrust's 27.

  2. 2

    Helicone

    Helicone is listed as open source, while Braintrust is not and carries 6.2k GitHub stars to Braintrust's 27.

  3. 3

    DeepEval

    DeepEval is listed as open source, while Braintrust is not, is open source against Braintrust's freemium model, and carries 18k GitHub stars to Braintrust's 27.

  4. 4

    MLflow

    MLflow is listed as open source, while Braintrust is not, is open source against Braintrust's freemium model, and carries 28k GitHub stars to Braintrust's 27.

  5. 5

    OpenPipe ART

    OpenPipe ART is listed as open source, while Braintrust is not, is open source against Braintrust's freemium model, and carries 11k GitHub stars to Braintrust's 27.

Frequently asked questions

What is the closest alternative to Braintrust?

Langfuse ranks highest among the alternatives to Braintrust we track. Langfuse is listed as open source, while Braintrust is not and carries 35k GitHub stars to Braintrust's 27. Open-source LLM engineering platform for tracing, evals, prompt management, and metrics so teams can debug and improve production AI applications.

Is there an open-source alternative to Braintrust?

Yes. Langfuse, Helicone, DeepEval, MLflow, OpenPipe ART, Opik, Phoenix, and Portkey are listed as open source in our catalog. Braintrust is not listed as open source. Langfuse is the highest ranked of them: Open-source LLM engineering platform for tracing, evals, prompt management, and metrics so teams can debug and improve production AI applications.

Open source
Helicone logo
Helicone

Observability· helicone.ai

Freemium

Open-source AI gateway and LLM observability platform for logging, tracing, routing, evaluation, caching, and cost monitoring across model providers and agent stacks.

6,165
Open source
DeepEval logo
DeepEval

Observability· deepeval.com

Open source

Open-source evaluation framework for testing LLM apps, agents, RAG systems, and prompts with repeatable metrics, regression checks, and CI-friendly workflows.

18,251
Open source
MLflow logo
MLflow

Observability· mlflow.org

Open source

MLflow is an open-source AI engineering platform with GenAI evaluation, tracing, monitoring, and optimization workflows for agents, LLM apps, and models.

27,974
Open source
OpenPipe ART logo
OpenPipe ART

Observability· art.openpipe.ai

Open source

Agent Reinforcement Trainer for improving LLM agent reliability with GRPO-based reinforcement learning workflows.

10,727
Open source
Opik logo
Opik

Observability· comet.com

Open source

Open-source LLM observability and evaluation platform from Comet for tracing, prompt management, testing, and agent optimization.

22,001
Open source
Phoenix logo
Phoenix

Observability· arize.com

Open source

Open source AI observability and evaluation platform for tracing LLM applications, running evals, and debugging agent behavior with OpenTelemetry.

11,446
Open source
Portkey logo
Portkey

Observability· portkey.ai

Freemium

AI gateway and observability layer for routing, guardrails, caching, logging, and spend control across LLM providers behind one API.

13,037
Open source
  • 6

    Opik

    Opik is listed as open source, while Braintrust is not, is open source against Braintrust's freemium model, and carries 22k GitHub stars to Braintrust's 27.

  • 7

    Phoenix

    Phoenix is listed as open source, while Braintrust is not, is open source against Braintrust's freemium model, and carries 11k GitHub stars to Braintrust's 27.

  • 8

    Portkey

    Portkey is listed as open source, while Braintrust is not and carries 13k GitHub stars to Braintrust's 27.