Nace.AI Drex v1.5
Nace.AI's 9B decision model, which reads a text or JSON state and returns a calibrated probability for each answer to yes/no, multiple-choice and ordinal questions.
From Nace.AI, Drex v1.5 is a cloud decision model. It reads a piece of text and answers typed questions about it, such as a choice between labels, a yes or no, or a score on a scale, with a probability for every option instead of written text. It reads up to 131K input tokens per request. It runs through OpenRouter using your own API key, from $0.04 per million input tokens.
- Released
- Sep 2026
- Pricing
- $0.04 / 1M in · $0.00 / 1M out
- Answers
- Choice, yes/no, score
- Context window
- 131K in
Samples
Answered by Drex v1.5 via OpenRouter. A decision model returns probabilities, not prose, so each card shows how sure it was about every option. The same four questions run against every Decision model in the catalog.
Hi, I was charged twice for my March subscription. Can you refund the duplicate payment before the end of the week?
Which team should handle this support ticket?
- Payments, invoices and refunds99%
- Errors or broken features in the product0%
- Login, passwords and account settings0%
- Plans, pricing questions and upgrades0%
海辺のカフェの写実的な写真、夕暮れ、35mmフィルム風
What kind of image does this prompt ask for? It can be in any language.
- A logo or brand mark0%
- A photorealistic shot100%
- Drawn, painted or stylised art0%
- Anything else0%
What is a vector database, and when would a small team need one? I'm not asking you to build anything yet.
Does this message ask the assistant to create or generate something?
- Yes: it asks for something to be made0%
- No: it asks a question or wants an explanation100%
Checkout has returned an error for every customer since 9am and we are losing orders. Please look now.
How urgent is this message?
- Can wait for the next release0%
- Should be handled this week0%
- Should be handled today9%
- Needs attention right now90%
Nace.AI
Nace.AI builds the Drex decision models, which return a calibrated probability for each answer to a typed question about a text or JSON state.
www.nace.ai ↗Nace.AI's largest decision model, the successor to Drex v2.0, with a 262K-token context. Its host takes 16 questions per request, so the app sends a larger set in batches.
Nace.AI's 35B mixture-of-experts decision model with 3B active parameters, the larger successor to Drex v1.5. Its host takes 16 questions per request, so the app sends a larger set in batches.