Langfuse
Open source LLM observability platform for traces, evaluations, and prompt management
5 Best Alternatives to Langfuse
Similar LLM observability, fully hosted with less setup
LLM observability proxy for logging, caching, and analyzing every AI call
Evals-first platform with tracing included
AI evaluation and testing platform for measuring and improving LLM output quality
LLM gateway with built-in observability
Full-stack LLM gateway with routing, fallbacks, semantic caching, and guardrails
LangSmith (part of LangChain) offers similar tracing for LangChain-based apps
The most widely used framework for building LLM-powered applications and agents
LLM proxy with logging callbacks that feed observability dashboards
Open source Python library to call 100+ LLMs with one unified OpenAI-compatible interface
Quick Comparison
| Tool | Rating | Pricing | Category | Why Consider It |
|---|---|---|---|---|
| Helicone | ★★★★☆ | Freemium | Code Assistants | Similar LLM observability, fully hosted with less setup |
| Braintrust | ★★★★☆ | Freemium | Code Assistants | Evals-first platform with tracing included |
| Portkey | ★★★★☆ | Freemium | Code Assistants | LLM gateway with built-in observability |
| LangChain | ★★★★★ | Open Source | Code Assistants | LangSmith (part of LangChain) offers similar tracing for LangChain-based apps |
| LiteLLM | ★★★★☆ | Open Source | Code Assistants | LLM proxy with logging callbacks that feed observability dashboards |