Model tracker / Decision models / Nace.AI
Drex 1.5
Open-weight 9B decision model for high-volume text routing, triage and classification
Drex 1.5 is an open-weight decision model from Nace.AI (Nace.AI Open RAIL-M: organisations above $1M in revenue or funding need a separate commercial licence (personal and research use excepted), as do competitors of Nace; bars fully automated decisions with significant effects on people without human review, 9B (8.95B), on MiMo-V2.6-Distill-Qwen-9B parameters): it answers typed questions, such as yes or no, pick one or pick several, with probabilities instead of writing text. It costs $0.05 per million input tokens (Nace Console API, OpenRouter), and output is free. JevBench, the main independent benchmark, doesn't list it yet.
- Made by
- Nace.AI
- Weights
- Open, Nace.AI Open RAIL-M: organisations above $1M in revenue or funding need a separate commercial licence (personal and research use excepted), as do competitors of Nace; bars fully automated decisions with significant effects on people without human review
- Size
- 9B (8.95B), on MiMo-V2.6-Distill-Qwen-9B
- Where
- Nace Console API, OpenRouter (served by DeepInfra)
- Images
- No, text only
- Context
- 131,072 state tokens hosted (139,264 with the longest question); self-hosted default 16,384, raisable to 131,072
- Fine-tuning
- Tuning on your labelled decisions on request from Nace, with the weights shipped to you; open weights
Drex 1.5 price
US dollars per million input tokens. Decision models don't write text, so none of the hosted ones charge for output.
| Where | Input | Output | Notes | Checked |
|---|---|---|---|---|
| Nace Console API, OpenRouter (served by DeepInfra) | $0.05 | Free | Output is free. $0.04 on OpenRouter. Released 28 September 2026; requests for the retired Drex 1.1 go to it. JevBench lists a 2 October result on its older v1.5 scale that it doesn't rank or compare with current scores. | 2026-11-07 |
Drex 1.5 speed
| Measure | Result | Reported by |
|---|---|---|
| Reported speed | 145 ms median API time per decision, network included | Nace.AI |
Measured by the maker on its own hardware; JevBench doesn't list this model yet.
Decision models like Drex 1.5
Every other decision model we track, by independent JevBench score.
| Model | Input / M | JevBench | Weights |
|---|---|---|---|
| Drex 1.5 | $0.05 | – | Open |
| Mammoth-1 Baseten (Base Labs) | $0.10 | 85.2 | Open |
| Drex Max v1.1 Nace.AI | $0.03 | 84.2 | Closed |
| Perplexity Decider V1.2 Perplexity | $0.02 | 80.8 | Open |
| d1-ultra Liquid AI | $0.042 | 80.5 | Closed |
| Kev-27B Jared Palmer | Self-host | 78.9 | Open |
| Clef Cloudflare | $0.24 | 75.3 | Open |
| Jev 1.14 TypeSafe AI | $0.042 | 75.0 | Closed |
| d1 Liquid AI | $0.02 | 74.4 | Closed |
| Mercury Decide Inception | $0.02 | 73.6 | Closed |
| OpenAI Decisions (GPT-6 Luna) OpenAI | $0.10 | 73.5 | Closed |
| Microsoft-Decision-1 Microsoft | $0.042 | 70.8 | Closed |
| Elephant-1 Baseten (Base Labs) | $0.035 | 70.2 | Open |
| Strands Decider 26B-A4B AWS Strands Labs | Self-host | 66.7 | Open |
| Clef-flash Cloudflare | $0.038 | 63.8 | Open |
| Perplexity Decider Flash V1.2 Perplexity | $0.01 | 61.7 | Open |
| Kev-9B Jared Palmer | Self-host | 61.5 | Open |
| Clef-omni Cloudflare | $0.15 | 58.3 | Open |
| Joey-1 Baseten (Base Labs) | $0.01 | 57.8 | Open |
| d1-3B Liquid AI | Self-host | 49.5 | Open |
| d1-omni-600M (experimental) Liquid AI | Self-host | 32.8 | Open |
| Laya Convai Innovations | $0.011 | 32.5 | Open |
| CLM-8B Stanford and NVIDIA | Self-host | 20.1 | Open |
| Clairic Cloudflare | $0.10 | – | Closed |
| d1-2B Liquid AI | Self-host | – | Open |
| d1-omni-2B Liquid AI | Self-host | – | Open |
| Drex 2.0 Nace.AI | $0.06 | – | Open |
| Kev-0.8B Jared Palmer | Self-host | – | Open |
| Kev-4B Jared Palmer | Self-host | – | Open |
| Koa Decisions Salesforce | Self-host | – | Closed |
| Strands Decider 12B AWS Strands Labs | Self-host | – | Open |
| Strands Decider 2B AWS Strands Labs | Self-host | – | Open |
| Strands Decider E2B AWS Strands Labs | Self-host | – | Open |
| Strands Decider E4B AWS Strands Labs | Self-host | – | Open |
Compare them all in the decision models table →
Drex 1.5 on dbggr
- Stop asking your LLM multiple-choice questions: a guide to decision models Article, 2026-10-02
Drex 1.5 FAQ
How much does Drex 1.5 cost?
Drex 1.5 costs $0.05 per million input tokens at Nace Console API, OpenRouter (served by DeepInfra). Output is free. $0.04 on OpenRouter. Released 28 September 2026; requests for the retired Drex 1.1 go to it. JevBench lists a 2 October result on its older v1.5 scale that it doesn't rank or compare with current scores. Checked 7 November 2026.
Is Drex 1.5 open weight?
Yes. Nace.AI publishes the weights under Nace.AI Open RAIL-M: organisations above $1M in revenue or funding need a separate commercial licence (personal and research use excepted), as do competitors of Nace; bars fully automated decisions with significant effects on people without human review, so you can run and fine-tune it yourself.
How fast is Drex 1.5?
Nace.AI reports 145 ms median API time per decision, network included, measured on its own hardware.
How does Drex 1.5 compare with Jev?
JevBench doesn't list Drex 1.5 yet, so there's no independent comparison. Jev costs $0.042 per million input tokens; Drex 1.5 costs $0.05.