One engine. One price per clinician. Every feature included.

A standard primary-care differential runs ~6,500 tokens. A complex case with imaging and multi-system reasoning is ~20,000. A full Council of Agents cross-critique is ~45,000. The Starter plan (10M tokens) comfortably covers ~500 complex or ~1,500 standard cases per clinician per month. The Pro plan (25M) covers 2.5× that.

Nothing breaks. Overage is billed at our standard rates ($0.70–$3.20/1M depending on region and model class), itemised by day, and capped at 2× your plan allocation. Above that cap we pause billing and email you to upgrade — never a surprise invoice. Most clinics who hit overage twice in a row move to the next tier.

Yes. Scribe consumes tokens like any other operation (about 4K per consult), so heavy Scribe users may want the Pro allocation. But Scribe itself is not a separate SKU or feature flag — every Differential seat gets it, with every template.

Voice intake is valuable but not universal — some clinics never use it, others run it as their primary reception workflow. Pricing it separately means you only pay for it when it fits. Socrates can be enabled from day one or switched on later without any Differential changes.

Yes — a 14-day trial on Differential Starter or Pro, no credit card required. You get the full engine, full Scribe, and a capped token allocation to run real cases. We'll match you with an onboarding engineer even in the trial.

Yes. Annual contracts come with a 12% discount and priced in your region's currency, GST/VAT handled transparently. Most clinics move to annual after their first two months. Enterprise is annual by default.

Up at any time (immediate, prorated). Down at the end of the billing month. We'll remind you if your usage suggests a lower plan would fit.

Yes. We price in local currency with GST/VAT handled per jurisdiction, and we discount against regional reference costs for clinical software. A practice in Manchester and a practice in Melbourne will pay different absolute prices — the value-to-price ratio is the same.

Your per-seat price is locked for the duration of your billing term (month-to-month or annual). We publish price changes 90 days in advance and never raise an existing customer's rate during a contract.