Langfuse vs Helicone

Compare Langfuse and Helicone on deployment, pricing, model support, and more.

Langfuse

Tagline: Open-source LLM observability — tracing, evaluation, and prompt management
Description: Langfuse is an open-source LLM engineering platform for tracing, evaluation, and prompt management. Self-host it for complete data control or use Langfuse Cloud. Works with LangChain, LlamaIndex, OpenAI SDK, and any custom LLM stack via a simple Python/JavaScript SDK.
Category: LLM Frameworks
Pricing: Free
Metric: 34,469 GitHub stars (source)
Link: Visit

Tagline: One-line LLM observability proxy — log, monitor, and debug LLM API calls
Description: Helicone is an open-source LLM observability platform that works as a proxy between your app and LLM APIs. Add one line to change your base URL and every API call is automatically logged with latency, cost, tokens, and full request/response. Supports OpenAI, Anthropic, Azure OpenAI, Groq, and more.
Category: LLM Frameworks
Pricing: Freemium
Metric: 6,145 GitHub stars (source)
Link: Visit

Attribute	Langfuse	Helicone
Tagline	Open-source LLM observability — tracing, evaluation, and prompt management	One-line LLM observability proxy — log, monitor, and debug LLM API calls
Category	LLM Frameworks	LLM Frameworks
Pricing	Free	Freemium
Description	Langfuse is an open-source LLM engineering platform for tracing, evaluation, and prompt management. Self-host it for complete data control or use Langfuse Cloud. Works with LangChain, LlamaIndex, OpenAI SDK, and any custom LLM stack via a simple Python/JavaScript SDK.	Helicone is an open-source LLM observability platform that works as a proxy between your app and LLM APIs. Add one line to change your base URL and every API call is automatically logged with latency, cost, tokens, and full request/response. Supports OpenAI, Anthropic, Azure OpenAI, Groq, and more.
Metric	34,469 GitHub stars (source)	6,145 GitHub stars (source)
Link	Visit	Visit