Helicone
An open source LLM observability layer that logs requests through a gateway or asynchronously and reports usage, cost and latency analytics.
Free tier with capped monthly requests and a single seat; paid tiers charge a fixed monthly fee plus usage-based overage on requests and storage; enterprise is custom quoted; self-hosting the open source build is free.
Open source
Appears in 1 guide
Where it ranks
Guides that include Helicone.
Security headers
What Helicone's website sends to your browser.
Scanned 2026-08-25. Grade headers F, scoring 25 out of 100.
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No Content-Security-Policy, so no defence in depth against cross-site scripting
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Strict-Transport-Security is set
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No X-Content-Type-Options, so MIME sniffing is not disabled
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No X-Frame-Options and no CSP frame-ancestors, so clickjacking is possible
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No Referrer-Policy, so full URLs may leak to third parties
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No Permissions-Policy, so powerful browser features are not restricted
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No Cross-Origin-Opener-Policy
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No Cross-Origin-Resource-Policy
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No server-version or X-Powered-By disclosure
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.