TypeSafe AI
Jev
First public System One model — typed decisions with calibrated probabilities for software, not chat.
- Latency
- 70–500ms
- Pricing
- $0.042/M in · out free
- Types
- choice · score · boolean
Model catalog
System One / Decision Models with specs, pricing, and status.
Waitlist
vinnylarouge (independent)
jevlike
Research starter — train a small one-pass option scorer (Jev-like I/O shape); not TypeSafe and not a full System One suite.
- Latency
- 20–200ms
- Pricing
- self-host · $0
- Types
- choice
Jared Palmer (independent)
Kev-0.5B
LoRA adapter
Open LoRA + readout on Qwen2.5-0.5B — Jev-compatible System One API, not a frontier base model.
- Latency
- 100–300ms
- Pricing
- self-host · $0
- Types
- choice · score · boolean
ConvAI Innovations
Laya
Open ModernBERT-large System One–style decision model (~421M) with typed answers and probabilities.
- Latency
- 30–80ms
- Pricing
- self-host · $0
- Types
- choice · score · boolean
TianyuCodings (independent)
NanoJev
Open 0.6B parallel decision model (Qwen3-0.6B + decision heads) — independent Jev-style replica, not TypeSafe.
- Latency
- 50–500ms
- Pricing
- self-host · $0
- Types
- choice · score · boolean
Bespoke Labs
Bespoke-Nimble-9B
LoRA adapter
Open LoRA on Qwen3.5-9B — typed decisions + probs; open Jev recipe, not a frontier base model.
- Latency
- 100–500ms
- Pricing
- self-host · $0
- Types
- choice · score · boolean