Compare Helicone alternatives
Helicone is itself an open-source (Apache-2.0) LLM observability platform that can be self-hosted, with a free tier capped at 10,000 requests a month and paid plans starting at $20 per seat. Teams comparing observability tools for LLM applications weigh it against other options depending on whether they want tracing alone or a fuller prompt-management and evaluation workflow.
Langfuse covers similar ground — tracing, prompt management, and cost tracking — and is a common side-by-side comparison. OpenLIT is built specifically around OpenTelemetry-native instrumentation if you already have an OTel pipeline, while Laminar leans more toward agent-specific evaluation and trace debugging.
FAQ
Is there a free, open-source alternative to Helicone?
Helicone itself is already free and open source. If you want to compare, Langfuse, OpenLIT, and Laminar are also open source and free to self-host.
What's the best open-source alternative to Helicone?
Langfuse is the closest match for tracing, prompt management, and cost tracking together. OpenLIT is the better pick if you want OpenTelemetry-native instrumentation.
What are the top open-source alternatives to Helicone?
Browse all open-source alternatives to Helicone above, or explore the full Developer Tools category for more options.