VerdictApi

Decision APIs, Compared Without the Sales Pitch

VerdictApi independently compares APIs that return decisions instead of prose — a chosen option, a score, or a yes/no probability your code can branch on directly.

APIs and models covered

OpenAI Decisions APIOpenAI's endpoint that returns a decision from a fixed set of answers instead of prose. Launched in limited preview at DevDay 2026.TypeSafe JevA purpose-built System One model that answers typed questions — choice, score, or yes/no — with calibrated probabilities.LayaAn open-source, Apache 2.0 decision model you can self-host, built as an answer to closed decision APIs.Claude Haiku 5.5Anthropic's cheapest small model, positioned for classification, extraction, and subagent work. Full pricing, benchmarks, and upgrade calls.

Latest verdicts

OpenAI Decisions API vs Jev vs Laya

One folds decision-making into a general model platform; the others ship decision-specific models. Here's what each returns, how they differ, and where each fits.

How we compare

Every API on this site is evaluated through the same framework: what it returns, how you call it, what it costs, how available it is, and what it is — and is not — good for. Facts carry a numbered source; anything we could not confirm is labeled as unknown rather than guessed.

Read the full comparison methodology for our source priorities, treatment of unconfirmed information, and policy on affiliate payouts.

Last updated: September 30, 2026