Best Alternatives to Langfuse

Framework-agnostic LLM tracing — generous free tier, European privacy. Compare 10 similar free AI tools.

1. LangChain — LLM orchestration — 700+ integrations (Free: MIT)
2. Arize Phoenix — Open-source LLM observability — traces, evaluations, experiments, prompt tracking in a single dashboard (Free: Fully open source; self-hosted)
3. Ollama — Run 100+ LLMs locally from the terminal — completely free (Free: Free; 100+ models locally)
4. Le Chat — Mistral's free chatbot — fastest response times, European privacy (Free: Unlimited chat with Mistral Large; web + code interpreter)
5. LiteLLM — Unified OpenAI-format interface for 100+ providers — proxy server (Free: Fully free; proxy server)
6. Flowise — Drag-and-drop LangChain builder (Free: Free self-host (Apache 2.0))
7. Helicone — One-line proxy — cost tracking, 95% cache savings, 100+ model providers (Free: Free self-host; 100K free cloud requests)
8. DeepSeek API — GPT-4 class at $0.27/M tokens (Free: Unlimited (rate-limited); $0.27/M tokens)
9. Unify.ai — Quality/cost/latency sliders — live benchmarks updated every 10 minutes (Free: $100 free credits)
10. BentoML / OpenLLM — Deploy AI apps at scale (Free: Free OSS + cloud credits)

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