TensorZero builds open-source tools for production-grade LLM applications: LLM gateway, observability, optimization, evaluations, and experimentation.
Helicone vs Langfuse
How do Helicone and Langfuse compare? Here are the facts side by side: pricing, platforms, open-source status and what each one is for.
| Directory detail | Helicone | Langfuse |
|---|---|---|
| What it is | Helicone provides an AI gateway for routing and monitoring AI applications. | Langfuse provides open-source evaluation and observability tools for tracing and improving AI agents. |
| Website | ||
| Type | Website | Website |
| Topic | ||
| Pricing | Free trial | Not confirmed |
| Platforms | Web | Web |
| Open source | Not stated | Not stated |
| Language | English | English |
| Alternatives |
Other options to consider
Sites similar to both Helicone and Langfuse.
Deepchecks evaluates and monitors AI agents using testing, tracing, dataset scoring, and production observability tools.
Bifrost by Maxim AI is an open-source AI gateway for LLMs, MCP and agents with routing, governance, guardrails and observability, supporting 8+ providers and 1000+ models via a drop-in SDK replacement.
Comet's Opik platform provides AI observability, agent testing, evaluation, and monitoring for developers.
Confident AI provides evaluation, observability, red-teaming, and governance tools for testing and monitoring AI systems.
PromptLayer supports prompt versioning, LLM evaluations, and production monitoring with traces, logs, and regression sets.





