tokens&
For enterprises
Submit
Sign in
tokens&

Build better AI stacks, claim useful opportunities, and give AI infrastructure companies a source-labeled adoption readout they can trust.

For buildersFor enterprises

Product

  • Startup credits and perks
  • Agent Skills
  • Submit project, tool, product, or perk

Enterprise

  • Start free company workspace

Community

  • Community
  • Newsletter
  • Events
Xin

© 2026 tokensand, LLC. All rights reserved.

  • Terms
  • Privacy
  • Security
  • Data Processing
  • Status
  1. Home
  2. Alternatives
  3. Alternatives to Helicone
Helicone

Best Alternatives to Helicone

Observability · 8 alternatives ranked of 36 in the category

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

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.

34,515

How each alternative differs from Helicone

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 Helicone carries no note.

  1. 1

    Langfuse

    Langfuse carries 35k GitHub stars to Helicone's 6.2k.

  2. 2

    DeepEval

    DeepEval is open source against Helicone's freemium model and carries 18k GitHub stars to Helicone's 6.2k.

  3. 3

    MLflow

    MLflow is open source against Helicone's freemium model and carries 28k GitHub stars to Helicone's 6.2k.

  4. 4

    OpenPipe ART

    OpenPipe ART is open source against Helicone's freemium model and carries 10k GitHub stars to Helicone's 6.2k.

  5. 5

    Opik

    Opik is open source against Helicone's freemium model and carries 22k GitHub stars to Helicone's 6.2k.

  6. 6
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.

10,353
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.

12,975
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 Helicone's freemium model and carries 11k GitHub stars to Helicone's 6.2k.

  • 7

    Portkey

    Portkey carries 13k GitHub stars to Helicone's 6.2k.

  • 8

    Promptfoo

    Promptfoo is open source against Helicone's freemium model and carries 25k GitHub stars to Helicone's 6.2k.