Langfuse
An open source LLM engineering platform covering tracing, evaluation, prompt management and datasets, available as managed cloud or self-hosted.
Free managed tier plus paid cloud tiers metered in consumption units (traces, observations and scores) with included allowances and graduated overage; self-hosting the open source build is free.
Open source
Appears in 1 guide
Where it ranks
Guides that include Langfuse.
Security headers
What Langfuse's website sends to your browser.
Scanned 2026-08-25. Grade headers A, scoring 85 out of 100.
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Content-Security-Policy is set
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Strict-Transport-Security is set
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X-Content-Type-Options: nosniff is set
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Permissions-Policy is set
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No Cross-Origin-Opener-Policy
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No Cross-Origin-Resource-Policy
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Server version or framework disclosed via Server/X-Powered-By
This is one narrow, automated check of the HTTP response headers on the vendor's own website. It says nothing about how the product itself is built, how it stores your data, or whether it has ever been audited. A good grade here is a small signal that somebody was paying attention.