Helicone is a mature, well-loved LLM observability layer — proxy-based logging, cost dashboards, and prompt analytics, now under Mintlify (acquired March 2026). It answers "what happened?" very well. It does not sit in a position to answer "should this have happened?" — there is no budget hard-stop, no policy allowlist, and no in-path block. Wardin is built the other way around: enforcement first, evidence as the byproduct.
Helicone's observability surface is more mature than ours: broader SDK/language coverage, session replay, and a longer track record of prompt-level analytics at scale. If your only need is "log and analyze what already happened," Helicone does that well and Wardin's tracing (opt-in, PII-redacted) is younger. We also don't yet have Helicone's long-retention export — that's on our roadmap, not shipped today.
Choose Helicone if you only need visibility into traffic you already trust, want the deepest prompt-search/session-replay tooling, or you're already inside the Mintlify ecosystem. Choose Wardin if a request needs to be stopped before it reaches the provider — budget hard-stops, policy allowlists, and rate limits that actually enforce, not just alert.