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

Claude Code
GitHub Copilot
Cursor
OpenClaw
VS Code
Claude for Desktop
opencode
Codex is a VS Code extension that allows any engineer to attach comments, questions or any kind of content to specific lines of code.

Which is more popular?
Based on our record, Langfuse seems to be a lot more popular than Codex. While we know about 32 links to Langfuse, we've tracked only 1 mention of Codex.
Website, pricing, platforms and company facts side by side.
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| Website | langfuse.com | usecodex.com |
| Pricing | — | |
| Company | Startup from the United States | — |
| 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....
No description of Codex yet.
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
Walkthroughs and reviews on video.
Langfuse in two minutes
No Codex videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Langfuse and Codex. 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...
We have no reviews of Codex yet. Be the first one to post
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 / 16 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 / 19 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 / 24 days ago
Our company, Codex, is live on Product Hunt now and we'd love your support via an upvote! - Source: dev.to / about 4 years ago
When comparing Langfuse and Codex, you can also consider the following products.

Open-source LLM Observability for Developers
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Transform hours of debugging into seconds with a single command. Experience coding at thought-speed with Claude's AI that understands your entire codebase—no more context switching, just breakthrough results.
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Build and deploy LLM applications with confidence
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Your AI pair programmer. With GitHub Copilot, get suggestions for whole lines or entire functions right inside your editor.
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Framework for building applications with LLMs through composability
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The AI-first Code Editor. Build software faster in an editor designed for pair-programming with AI.
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