Helicone vs Langfuse
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Helicone compared with Langfuse
| Detail | Helicone | Langfuse |
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| What it does | AI Gateway & LLM Observability
| Open Source Agent Evals & Observability
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| Stage | Not given
| Established
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| Founded | Not given
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| Based in | Not given
| DE
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| Pricing model | freemium
| freemium
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| Pricing | Not given
| Not given
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| Key features | - Request routing across multiple LLM providers
- Real-time monitoring and analytics dashboard
- Prompt management and playground
- Rate limiting and alerts
- Automatic fallbacks for LLM requests
- Response caching
- User tracking and sessions
- HQL query language
- Webhooks integration
- Data export capabilities
| - Hierarchical traces capture every LLM call, tool invocation, and retrieval step
- LLM-as-a-judge, heuristic functions, or human review evaluations
- Prompt management with one-click deployments and rollbacks
- Playground to test prompts on real production inputs and compare models
- Experiments with test cases and side-by-side comparison
- Human annotation and collaborative human-in-the-loop workflows
- Cost and latency monitoring with dashboards and alerts
- REST APIs and Query SDK for data access
- Langfuse Assistant to automate the AI engineering loop
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| What makes it different | - Works with multiple LLM providers unlike competitors focused on single ecosystems
- Open-source platform
- More cost-effective scaling than competitors
- Simple integration with single line of code
| - MIT licensed open source platform with no data lock-in
- Enterprise scale architecture handling billions of monthly events
- Works with any language and framework with no framework lock-in
- Async by default so tracing never blocks your application
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| Free plan | Not given
| Not given
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| Open source | Not given
| Not given
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| Platforms | Not given
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| Public API | Not given
| Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 73 ● no change since last check | 79 ● no change since last check |
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| Trust Flow (Majestic) | 26 | 35 |
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| Citation Flow (Majestic) | 46 | 54 |
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| Referring domains (Majestic) | 2986 | 6114 |
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4 details filled in for both companies.
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