Nace.AI Drex
Jev-compatible decision models with open weights: a probability for every option from one pass, 128K context
Drex is Nace.AI's family of decision models. You send the facts and the options; one forward pass returns a probability for every option, for choice, yes/no and scale questions. Drex is wire-compatible with TypeSafe's Jev: the TypeSafe SDK works against the Nace endpoint unchanged.
Drex v2.0 and v1.5 read up to 131K tokens of state. Weights are on Hugging Face under the Nace.AI Open RAIL-M licence and run on llama.cpp and Ollama, or inside your own AWS or Azure account.
The hosted API costs $0.04 to $0.06 per 1M input tokens depending on version, with output not billed and $25 of signup credit.
Pricing: Per token usage
Nace.AI Drex prices by model
Per 1M tokens, read off Nace.AI Drex's own pricing page on the date shown.
| Model | Input / 1M | Cached / 1M | Output / 1M | Checked | Notes |
|---|---|---|---|---|---|
| Drex v1.5 | $0.05 | โ | $0.00 | 15 Oct 2026 | Output not billed. $25 signup credit. |
| Drex v2.0 | $0.06 | โ | $0.00 | 15 Oct 2026 | Output not billed. $25 signup credit. |
Nace.AI Drex Alternatives
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