
Langfuse
Portkey
LangSmith
liteLLM
Eden AI
OpenRouter
LangChain
Open-source LLM Observability for Developers

Extism
OpenCL
Add design patterns to C# and VB without boilerplate code with PostSharp. Choose from ready-made design patterns for C# and VB or create your own.

Which is more popular?
Based on our record, Helicone AI seems to be more popular. It has been mentioned 5 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | helicone.ai | postsharp.net |
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Why this product is good
Recommended for
Overall verdict
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Helicone AI and PostSharp. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Helicone takes the simplest possible approach to LLM monitoring: it's a proxy. Change your OpenAI base URL from api.openai.com to oai.helicone.ai, add your Helicone API key as a header, and every LLM request is logged — latency, tokens,... - Source: dev.to / 3 months ago
You're monitoring production traffic. You need Langfuse / Phoenix / Helicone / Braintrust for that. Online eval is a different problem class: implicit feedback, drift detection, hallucination rates on your data, not on HellaSwag. - Source: dev.to / 4 months ago
For many teams, especially those starting out or with simpler needs, commercial solutions like Portkey, Helicone, OpenPipe, or LiteLLM Proxy offer off-the-shelf capabilities that cover many common proxy use cases (caching, logging, cost... - Source: dev.to / 5 months ago
Tracking PostSharp since Mar 2021.
When comparing Helicone AI and PostSharp, you can also consider the following products.

Langfuse is an open-source LLM engineering platform that helps teams collaboratively debug, analyze, and iterate on their LLM applications.
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Extism is the open source, universal plug-in system. Extend all the software everywhere! Powered by WebAssembly.
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Build production-grade & reliable AI apps with Portkey
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Application and Data, Languages & Frameworks, and Language Extensions
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Build and deploy LLM applications with confidence
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