langfuse vs promptfoo

Common questions

What is the difference between langfuse and promptfoo?

langfuse: Open source AI engineering platform: LLM evals, observability, metrics, prompt management, playground, datasets. promptfoo: Tool for evaluating prompts and AI agents by comparing performance across various models and red teaming.. See the comparison table for live GitHub stats and shared categories.

When should I choose langfuse over promptfoo?

Choose langfuse over promptfoo when License: langfuse is Other, promptfoo is MIT; Pricing: Langfuse offers an open-source version under MIT license except for some 'ee' folders, indicating a possible enterprise edition. Specific pricing details are not provided within the repository content; Requirements: Requires Docker; Self-hosting options include Docker Compose and Kubernetes for deployment.; Both Promptfoo and Langfuse offer evaluation and observability for LLMs, but they do so through different methodologies and toolsets; Tags unique to langfuse: analytics, evaluation, observability, open-source; Use Langfuse if you need advanced prompt management tools, as it offers comprehensive features specifically tailored for managing prompts efficiently.

When should I choose promptfoo over langfuse?

Choose promptfoo over langfuse when License: promptfoo is MIT, langfuse is Other; Both Promptfoo and Langfuse offer evaluation and observability for LLMs, but they do so through different methodologies and toolsets; Tags unique to promptfoo: ci-cd, evaluation-framework, llm-evaluation, pentesting; Also covers LLM Frameworks; For comparing performance across GPT, Claude, Gemini, DeepSeek.

When should I avoid langfuse?

Avoid using Langfuse if you prefer a vendor-managed service as it requires self-hosting. This can be less desirable for teams looking to minimize infrastructure management. If your development environment is not compatible with Kubernetes, Docker Compose configurations, or major cloud providers (AWS, Azure, GCP) that Langfuse supports via specific templates and Helm, it may not be the optimal choice.

When should I avoid promptfoo?

If you do not require comparative analysis among multiple LLM models If your project does not benefit from the specific red teaming capabilities offered by promptfoo

Is langfuse or promptfoo more popular on GitHub?

langfuse has more GitHub stars (32,271 vs 23,838). Stars measure visibility, not whether either tool fits your constraints.

Are langfuse and promptfoo open source?

Yes - both are open-source projects on GitHub (langfuse: Other, promptfoo: MIT).

Where can I find alternatives to langfuse or promptfoo?

GraphCanon lists graph-backed alternatives at langfuse alternatives and promptfoo alternatives (langfuse markdown twin, promptfoo markdown twin), ranked by typed relationship edges rather than popularity votes.

Is there a machine-readable version of this comparison?

Yes. The markdown twin at this comparison mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers.

Which is better maintained, langfuse or promptfoo?

langfuse: Very active. promptfoo: Very active. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance.

Where are the full trust reports for langfuse and promptfoo?

GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: langfuse trust report; promptfoo trust report.