Langfuse
LangSmith
Helicone AI
Galileo AI
PromptLayer
Arize
Future AGI
Rapidly ship AI without guesswork

YieldStack
CBRE Group
Jones Lang LaSalle
Online platform for commercial real estate loans

Which is more popular?
Based on our record, Braintrust.dev seems to be more popular. It has been mentioned 3 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | braintrust.dev | stacksource.com |
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Recommendations tracked on public social media and blogs since March 2021.

Braintrust focuses on evaluation-driven development: the idea that monitoring LLM applications means continuously scoring outputs against quality criteria, not just tracking latency and error rates. It's an eval platform first, with... - Source: dev.to / 5 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 / 5 months ago
Same approach works with Langfuse, Phoenix, Braintrust, or your existing OTel pipeline — the metadata.userId pattern is the universal part. - Source: dev.to / 5 months ago
Tracking StackSource since May 2023.
When comparing Braintrust.dev and StackSource, 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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AI-native commercial mortgage brokerage. One submission, lender matching, and human support through closing. No upfront fees.
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Build and deploy LLM applications with confidence
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CBRE Group, Inc. is a holding company that conducts all of its operations through its indirect subsidiaries
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Open-source LLM Observability for Developers
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Jones Lang LaSalle, a financial and professional services firm, specializes in commercial real estate services and investment management.
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