Helicone alternatives in 2026: 24 tools like Helicone

Closest: LLM Observability

Langfuse

Open-source LLM engineering platform for tracing and evals

Curated

1 use thisCompare with Helicone
AgentOps

Observability and debugging platform purpose-built for AI agents

Curated

0 use thisCompare with Helicone
Laminar

Open-source platform to trace, evaluate, and debug AI agents

CuratedWeb

0 use thisCompare with Helicone
Opik

Open-source LLM evaluation and tracing by Comet

Curated

0 use thisCompare with Helicone
Phoenix (Arize)

Open-source AI observability and evaluation platform

Curated

0 use thisCompare with Helicone
Traceloop

OpenTelemetry-based LLM observability

Curated

0 use thisCompare with Helicone

More in Observability & Evals

Arize AI

ML observability and monitoring platform

CuratedWeb

0 use thisCompare with Helicone
Evidently

ML model monitoring and data quality checks

Curated

0 use thisCompare with Helicone
Fiddler AI

ML model performance management

Curated

0 use thisCompare with Helicone
WhyLabs

Discontinued AI observability platform; platform and whylogs open sourced

Curated

0 use thisCompare with Helicone
Braintrust

LLM evaluation and prompt management platform

CuratedWeb

0 use thisCompare with Helicone
DeepEval

Open-source LLM evaluation framework

Curated

0 use thisCompare with Helicone
EleutherAI LM Evaluation Harness

Framework for few-shot language model evaluation

Curated

0 use thisCompare with Helicone
HELM

Holistic evaluation of language models

Curated

0 use thisCompare with Helicone
HumanEval

OpenAI's benchmark for evaluating code generation

Curated

0 use thisCompare with Helicone
LangSmith

Platform for debugging and evaluating LLM apps

Curated

0 use thisCompare with Helicone
Persimmon

Research-preview model that simulates how people behave in chats

CuratedWeb

0 use thisCompare with Helicone
Ragas

Evaluation framework for RAG pipelines

Curated

0 use thisCompare with Helicone
Captum

Model interpretability library for PyTorch

Curated

0 use thisCompare with Helicone
ELI5

Debug and explain ML classifiers and regressors

Curated

0 use thisCompare with Helicone
InterpretML

Microsoft's toolkit for model interpretability

Curated

0 use thisCompare with Helicone
SHAP

Game theoretic approach to explain ML model outputs

Curated

0 use thisCompare with Helicone
Guidance

Constrained generation and prompt control by Microsoft

Curated

0 use thisCompare with Helicone
PromptFlow

Suite of development tools for LLM apps

Curated

0 use thisCompare with Helicone

Questions

What are the closest alternatives to Helicone?

Langfuse, AgentOps and Laminar sit on the same sub-line as Helicone (LLM Observability) on AI Landscape, with 3 more.

How are these alternatives chosen?

They are the other products on the Observability & Evals stop of the map: curated products first, the ones on Helicone's sub-line before the rest, then by name until members have marked enough of them.