Sublingual

Sublingual is an open-source LLM observability and evals platform that requires zero code changes to integrate. Instantly plug into a full suite of analysis tools with just one pip install—nothing else.

Sublingual offers an open-source LLM observability and evals platform that requires no code changes to integrate. It captures logs and insights across environments, installs via pip, and provides local hosting with emphasis on out-of-the-box observability for evaluating LLM performance.

Step through Sublingual’s homepage year by year — the pitch, the product and the design, as the web remembers them.

Each year opens the Wayback Machine capture closest to that date.