Helicone vs Langfuse

Helicone — Infrastructure · Acquired · 1 of 1 figure sourced  |  Langfuse — Infrastructure · Acquired · 1 of 1 figure sourced

Relationship

Helicone's own official comparison blog post against Langfuse.

1 of 2 capabilitiesShared product typeSourced competitorBuild and run AI agents

1 of 2 capabilities — Shares evaluation and observability.

Ludbee capability tags · from the product records

Shared product type — Both ship platform.

Ludbee product records

Sourced competitor — “Helicone and Langfuse are top open-source tools that help developers monitor, analyze, and optimize their LLM-powered applications.”

helicone.ai · checked 2026-09-19

Build and run AI agents — Rivals on this job — Create agents that plan multi-step work across tools and data, then deploy, govern and watch them in production.

Ludbee needs vocabulary · the scope on the sourced edge

Aligned comparison

FieldHeliconeLangfuse
Sizenot disclosednot disclosed
Employees——
Founded20232022 1 yrs earlier
StatusAcquiredAcquired match
CategoryInfrastructureInfrastructure match
Stack layerAPI service, PlatformApplication, Platform
HeadquartersSan Francisco, USABerlin, Germany

Capability overlap

Shared · 1

Evaluation and observability

Not verified for Langfuse · 1

Model hosting

Recorded for Helicone. Langfuse’s product records say nothing either way — a missing record is not a missing capability.

Langfuse has no capability Helicone lacks, among the 1 recorded here.

Products, side by side

Hand-checked pairing

Helicone

Platform

HeliconePlatform

Open-source LLM observability platform for logging, monitoring and debugging LLM API calls -- now in maintenance mode after Helicone's acquisition by Mintlify; new customers are directed to migrate rather than adopt it.

Langfuse

Platform

LangfusePlatform

Open-source LLM observability platform for tracing, evaluating, prompt management and debugging language-model applications.

No counterpart

Helicone sells these in a stack layer with no product recorded for Langfuse yet — nothing on the other side to compare them against.

API service

Helicone AI GatewayAPI service

OpenAI-compatible unified API routing to 100+ models (OpenAI, Anthropic, Vertex, Groq and more) through Helicone's platform.

Langfuse sells these in a stack layer with no product recorded for Helicone yet — nothing on the other side to compare them against.

Application

Langfuse AssistantApplication

In-product AI assistant for exploring Langfuse project data (traces, observations, metrics) and taking approved actions inside Langfuse.

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