Build with Liquid d1

d1 is developed and owned by Liquid AI and implements the System One API contract. System One compatibility describes its interface, not its ownership. Send it a state (text or JSON) and a map of questions, and it returns one typed answer per question: a Choice among named options, a Score against ordered levels, or a Noul (probability of yes). Answers are read straight from the model's probabilities. Nothing is generated, so there is nothing to parse and no output-token cost.

Code owns the workflow. d1 supplies the judgment where plain code would need semantic understanding: which team a ticket belongs to, how severe a log line is, whether a claim is supported by its evidence.

d1 can be called directly from Liquid or as liquid/d1 through Vercel AI Gateway and OpenRouter. Preserve the user's chosen provider; keys, endpoints, SDK calls, limits, billing, and response metadata can differ by access path.