STATE + QUESTIONS
Typed request
Represent the task in a structured request with stable names and criteria.
System One Models
Open models for small, repeated decisions
System1 Models provides one API for typed decisions from open-weight models, with Global and optional EU processing tiers.
Instead of generating a paragraph, a decision request provides context and exactly one named question per launch request. A response can identify a choice, a yes/no probability or a score distribution.
ANSWER + DISTRIBUTION
Inspectable result
Return the selected answer and probability information supported by the model.
GLOBAL OR EU
Tier-aware route
Set an allowed processing tier per API key or request.
Text API for customer accounts
Sign in with Google, create an API key and send text decisions right away; new accounts get 100M free input tokens. Top-ups: Germany today; EU businesses and more countries soon. Image input is coming soon. See the API documentation for the current model and route contract.
System1 Models does not resell TypeSafe’s Jev. Jev is a trademark of TypeSafe AI; System1 Models is not affiliated with TypeSafe.