What Helicone does
Helicone is (was) an open-source LLM observability platform and AI gateway designed to help AI developers and teams debug, evaluate, and operate language-model applications in production. Its core product approach is “one integration” for model usage and tracing: teams can send LLM traffic through Helicone (cloud or self-hosted) to gain request/session traces, cost and latency analytics, and workflow-level debugging, while also using Helicone’s gateway/routing layer to manage multi-provider usage and reliability concerns.
On March 3, 2026, Mintlify announced it acquired Helicone. Helicone subsequently moved into maintenance mode, continuing security updates, bug/performance fixes, and support for existing customers, while new signups were disabled. Mintlify positions the combined direction as a knowledge infrastructure layer for the agentic future, incorporating Helicone’s routing/observability with Mintlify’s AI knowledge products.