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

CodeMap4AI
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your personal junior developer

Which is more popular?
Based on our record, Langfuse should be more popular than smol developer. It has been mentioned 34 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | langfuse.com | github.com |
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| Company | Startup from the United States | — |
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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....
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What each product offers, as listed by its team.


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Langfuse in two minutes
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Langfuse and smol developer. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


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 an open-source observability and analytics platform for LLM applications. Its open-source nature is a significant draw for companies that prefer to self-host or want to avoid vendor lock-in. - Source: dev.to / 6 days ago
We have researched and experimented with several AI evaluation platforms, including Arize Phoenix, Microsoft Foundry, and Langfuse. After evaluating them against our requirements and roadmap, we shortlisted Microsoft Foundry and Langfuse... - Source: dev.to / 15 days ago
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 / about 1 month ago
Smol Developer builds full features based on natural language prompts — using an LLM agent approach. It handles file structure, function breakdown, and dependencies. - Source: dev.to / over 1 year ago
Check out smol-developer (https://github.com/smol-ai/developer). Source: almost 3 years ago
4. https://github.com/smol-ai/developer How can ChatGPT be effectively utilized for reading library source code, resolving coding issues, and serving as a dedicated coding assistant tailored for a specific programming language? - Source: Hacker News / almost 3 years ago
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