Humanloop vs Langfuse: Observability, Prompts & Evals Comparison
Compare Humanloop and Langfuse side by side. Both are tools in the Observability, Prompts & Evals category.
Updated March 10, 2026
The short answer
Choose Humanloop if collaborative platform for team development.
Choose Langfuse if fully open-source with MIT license and free for commercial use with no usage limits.
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Quick Comparison
| Category | Observability, Prompts & Evals | Observability, Prompts & Evals |
| Pricing | — | Open Source |
| Best For | — | Teams who want open-source LLM observability they can self-host and customize |
| Website | humanloop.com | langfuse.com |
| Key Features | — |
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| Use Cases | — |
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Pros & Cons: Humanloop vs Langfuse
- +Collaborative platform for team development
- +Version control for prompts
- +A/B testing and evaluation tools
- +Free tier for individuals
- −Pro tier at USD 99/mo may be steep for small teams
- −Learning curve for full feature utilization
- −Requires commitment to platform workflow
- +Fully open-source with MIT license and free for commercial use with no usage limits
- +Acquired by ClickHouse in January 2026, providing strong backing and future investment
- +Active development with strong community support and comprehensive documentation
- +Transparent pricing model based on units rather than complex metric calculations
- +Deep integrations with major frameworks like LangChain, OpenAI, and LlamaIndex
- −Recent acquisition by ClickHouse may lead to platform changes and strategic shifts
- −Smaller team of 7 employees may impact support capacity
- −Enterprise pricing at $3,450-$5,700/month can be expensive for mid-sized teams
Pricing: Humanloop vs Langfuse
- · Limited projects
- · Basic features
- · Community support
- · Individual use
- · Unlimited projects
- · Team collaboration
- · Advanced evaluation
- · Priority support
- · Custom limits
- · Dedicated support
- · SOC 2 compliance
- · Private deployment
When to Choose Humanloop vs Langfuse
- Self-hosted LLM monitoring
- Open-source tracing for AI applications
- Prompt versioning and management
About Humanloop
Humanloop is a collaborative platform for developing, testing, and monitoring LLM applications. The platform provides tools for prompt engineering, evaluation, and production monitoring with team collaboration features. Humanloop enables systematic prompt development with version control, A/B testing, and human feedback collection. The platform serves teams building production LLM applications requiring robust development workflows and observability. Humanloop offers tiered pricing from free for individuals to enterprise plans for large organizations.
About Langfuse
Langfuse is an open-source LLM engineering platform that provides comprehensive tools for traces, evaluations, prompt management, and metrics to debug and improve LLM applications. Founded in Berlin, Germany in 2022, Langfuse quickly became a leading platform in the LLM observability space. The platform features MIT-licensed open-source core with no usage limits for commercial use, making it highly accessible to teams of all sizes. Langfuse offers deep integration with popular frameworks including LangChain, OpenAI, LlamaIndex, and LiteLLM. The platform provides detailed tracing capabilities, evaluation tools, comprehensive prompt management, and rich metrics tracking. In January 2026, Langfuse was acquired by ClickHouse, Inc., marking a significant transatlantic venture exit and validating the platform's technology and market position. The acquisition demonstrates the value of Langfuse's approach to LLM observability, evaluations, and prompt management.
What is Observability, Prompts & Evals?
Tools for monitoring LLM applications in production, managing and versioning prompts, and evaluating model outputs. Includes tracing, logging, cost tracking, prompt engineering platforms, automated evaluation frameworks, and human annotation workflows.
Browse all Observability, Prompts & Evalstools →Other Observability, Prompts & Evals Tools
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