Using System One models in Swift: fast, deterministic decisions via Apple Foundation Models
rxwei · x · 2026-10-03
Peter Friese shows how to call System One models like TypeSafe's Jev from Swift using Apple's Foundation Models framework.
- What they are: models built for fast, structured decisions that skip token-by-token generation — pass context plus questions, get deterministic answers in a few hundred milliseconds.
- Why it matters: LLMs are slow and expensive for high-volume micro-decisions like support triage, email sentiment, or refund calls.
- An 11-minute tutorial with Swift code showing how to integrate these into your own apps.
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