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  1. Home
  2. Alternatives
  3. Alternatives to DeepEval
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Best Alternatives to DeepEval

Observability · 8 alternatives ranked of 36 in the category

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

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.

35,164

How each alternative differs from DeepEval

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 DeepEval carries no note.

  1. 1

    Langfuse

    Langfuse is freemium against DeepEval's open source model, exposes a public API you can build against, and carries 35k GitHub stars to DeepEval's 19k.

  2. 2

    Helicone

    Helicone is freemium against DeepEval's open source model and exposes a public API you can build against.

  3. 3

    MLflow

    MLflow exposes a public API you can build against and carries 28k GitHub stars to DeepEval's 19k.

  4. 4

    OpenPipe ART

    OpenPipe ART exposes a public API you can build against.

  5. 5

    Opik

    Opik exposes a public API you can build against.

  6. 6

Frequently asked questions

What is the closest alternative to DeepEval?

Langfuse ranks highest among the alternatives to DeepEval we track. Langfuse is freemium against DeepEval's open source model, exposes a public API you can build against, and carries 35k GitHub stars to DeepEval's 19k. Open-source LLM engineering platform for tracing, evals, prompt management, and metrics so teams can debug and improve production AI applications.

Which DeepEval alternatives offer an API?

Langfuse, Helicone, MLflow, OpenPipe ART, Opik, Phoenix, Portkey, and Promptfoo expose a public API. DeepEval does not publish one in our catalog, so these are the options if you need to build against the product programmatically.

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.

6,186
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.

28,106
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.

10,770
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.

22,295
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.

11,656
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.

13,102
Open source
Promptfoo logo
Promptfoo

Observability· promptfoo.dev

Open source

Open-source testing, red-teaming, and evaluation framework for prompts, RAG, and agents.

25,602
Open source

Phoenix

Phoenix exposes a public API you can build against.

  • 7

    Portkey

    Portkey is freemium against DeepEval's open source model and exposes a public API you can build against.

  • 8

    Promptfoo

    Promptfoo exposes a public API you can build against.