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  1. Home
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  3. Alternatives to Portkey
Portkey

Best Alternatives to Portkey

Observability · 8 alternatives ranked of 36 in the category

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

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 Portkey

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 Portkey carries no note.

  1. 1

    Langfuse

    Langfuse carries 35k GitHub stars to Portkey's 13k.

  2. 3

    DeepEval

    DeepEval is open source against Portkey's freemium model.

  3. 4

    MLflow

    MLflow is open source against Portkey's freemium model and carries 28k GitHub stars to Portkey's 13k.

  4. 5

    OpenPipe ART

    OpenPipe ART is open source against Portkey's freemium model.

  5. 6

    Opik

    Opik is open source against Portkey's freemium model and carries 22k GitHub stars to Portkey's 13k.

  6. 7
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
Promptfoo logo
Promptfoo

Observability· promptfoo.dev

Open source

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

25,102
Open source

Phoenix

Phoenix is open source against Portkey's freemium model.

  • 8

    Promptfoo

    Promptfoo is open source against Portkey's freemium model and carries 25k GitHub stars to Portkey's 13k.