
Helicone AI
LangSmith
LangChain
Braintrust.dev
Portkey
PromptLayer
Humanloop
Langfuse is an open-source LLM engineering platform that helps teams collaboratively debug, analyze, and iterate on their LLM applications.

Codacy
CodeClimate
SonarQube
codebeat
CodeAnt AI
CodeMeter
CodeRabbit
Automated code reviews with static analysis.

Which is more popular?
Based on our record, Langfuse should be more popular than DeepSource. It has been mentioned 35 times since March 2021.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | langfuse.com | deepsource.com |
| Pricing | ||
| Company | Startup from the United States | 2018 |
| Listed in |
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....
DeepSource helps you automatically find and fix issues in your code during code reviews, such as bug risks, anti-patterns, performance issues, and security flaws. It takes less than 5 minutes to set up with your Bitbucket, GitHub, or GitLab account. It works for Python, Go, Ruby, Java, and...
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of Langfuse yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Langfuse in two minutes
How DeepSource works
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Langfuse and DeepSource. 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...
DeepSource, a comprehensive code review tool, offers detailed insights into code quality, security vulnerabilities, and productivity metrics. It empowers developers to identify and address potential issues early in...
DeepSource’s focus on reducing false positives and providing actionable insights could make it an attractive option for teams looking to improve their code review process and overall code health. But while DeepSource...
Recommendations tracked on public social media and blogs since March 2021.


Langfuse is an open-source LLM engineering platform specialized for AI applications. It provides:. - Source: dev.to / 10 days ago
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 / 16 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 / 25 days ago
Navigate to deepsource.com in your browser. - Source: dev.to / 7 months ago
On the OpenSSF CVE Benchmark[1], Semgrep CE hits 56.97% accuracy vs our 81.21%, and nearly 3x higher recall (75.61% vs 26.83%). On when to run it, fair point. Autofix Bot is currently meant for local use (TUI, Claude Code plugin, MCP).... - Source: Hacker News / 10 months ago
Recently, there was a Java meetup held at work (Deepsource) where I gave my first ever talk, "How GraalVM improves Ruby". - Source: dev.to / almost 4 years ago
When comparing Langfuse and DeepSource, you can also consider the following products.

Open-source LLM Observability for Developers
Compare Helicone AI to Langfuse or DeepSource:

Automatically reviews code style, security, duplication, complexity, and coverage on every change while tracking code quality throughout your sprints.
Compare Codacy to Langfuse or DeepSource:

Build and deploy LLM applications with confidence
Compare LangSmith to Langfuse or DeepSource:

Code Climate provides automated code review for your apps, letting you fix quality and security issues before they hit production. We check every commit, branch and pull request for changes in quality and potential vulnerabilities.
Compare CodeClimate to Langfuse or DeepSource:

Framework for building applications with LLMs through composability
Compare LangChain to Langfuse or DeepSource:

SonarQube, a core component of the Sonar solution, is an open source, self-managed tool that systematically helps developers and organizations deliver Clean Code.
Compare SonarQube to Langfuse or DeepSource: