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Langfuse is an open-source LLM engineering platform that helps teams collaboratively debug, analyze, and iterate on their LLM applications.

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Which is more popular?
Based on our record, Langfuse seems to be more popular. It has been mentioned 32 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | langfuse.com | devone.space |
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| Company | Startup from the United States | 2025 |
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In their own words, as submitted to SaaSHub.


Langfuse is an open-source LLM engineering platform designed to empower developers by providing insights into user interactions with their LLM applications. We offer tools that help developers understand usage patterns, diagnose issues, and improve application performance based on real user data....
devone.space is a modern, web-based utility platform offering 80+ essential tools for developers, designers — all in one unified, clean, and categorized interface. Designed for speed, simplicity, and productivity, it eliminates the need to switch between dozens of tool websites. There are no ads,...
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Langfuse in two minutes
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As answered by people managing Langfuse and devone.space.
devone.space's answer:
devone.space: Fast, Privacy-Focused, Minimalist Design with Useful Tools. Explore growing collection of free online tools designed for speed and privacy. Enjoy a clean, minimal user experience on Devone.space.
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Ten free AI prompt tools in 2026 across four categories: prompt generators (SurePrompts, Anthropic Console, OpenAI Playground), libraries (AIPRM, PromptHero, FlowGPT, Awesome ChatGPT Prompts), open-source workflow...
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Recommendations tracked on public social media and blogs since March 2021.


Langfuse is the other serious option in this category if you also want observability, evals and traces bundled with prompt management. Different scope, more setup, worth comparing honestly. - Source: dev.to / 21 days ago
Langfuse with Microsoft.Extensions.AI has an appealing story: update prompts without redeploying. A prompt fetches its config blob—model, tokens, temperature—which the code passes straight to the LLM. - Source: dev.to / 24 days ago
Langfuse is not a replacement for OpenTelemetry; it is a specialization layer built on top of it. Langfuse was engineered specifically for the unique telemetry needs of LLM applications. It acts as the semantic layer that OTel lacks. - Source: dev.to / 29 days ago
Tracking devone.space since Jul 2025.
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