
Langfuse
LangSmith
Helicone AI
OpenAI
Hugging Face
LangChain
LastMile AI
Train state-of-the-art language AI in the browser

Langfuse
Arize Phoenix
LangSmith
OpenTelemetry-native observability for AI agents and LLM applications. Trace model calls, investigate failures, and monitor token usage, estimated cost, and latency.

Which is more popular?
Based on our record, Humanloop 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 | humanloop.com | telemetry.dev |
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What each product offers, as listed by its team.


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


Overall verdict
Why this product is good
Recommended for
No analysis of Telemetry.dev yet.
Walkthroughs and reviews on video.
Train and deploy NLP — Humanloop
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How often each product is chosen within a category, 0–100% relative to the other.


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


Humanloop | London and San Francisco | Full time in person | https://humanloop.com Humanloop is building infrastructure for AI application development. We're the LLM Evals Platform for Enterprises.... - Source: Hacker News / almost 2 years ago
- https://humanloop.com/) for teaching me the philosophy of implementing a copilot textarea. I wish I could have used the project directly, but integrating just one React component into Rails while keeping importmap and StimulusJS was... - Source: Hacker News / about 2 years ago
- Conversational simulation is an emerging idea building on top of model-graded eval” - AI Startup Founder Things to consider when comparing options: “Types of metrics supported (only NLP metrics, model-graded evals, or both), level of... - Source: Hacker News / about 3 years ago
Tracking Telemetry.dev since Oct 2026.
When comparing Humanloop and Telemetry.dev, you can also consider the following products.

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Build and deploy LLM applications with confidence
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Arize Phoenix: Open Source AI Development Platform
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Open-source LLM Observability for Developers
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The AI community building the future. The platform where the machine learning community collaborates on models, datasets, and applications.
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