Model tracker / Decision models / Liquid AI
d1-ultra
d1-ultra is a closed decision model from Liquid AI: it answers typed questions, such as yes or no, pick one or pick several, with probabilities instead of writing text. It costs $0.04 per million input tokens (OpenRouter, Vercel AI Gateway), and output is free. JevBench, the main independent benchmark, doesn't list it yet.
- Made by
- Liquid AI
- Weights
- Closed
- Size
- Undisclosed
- Where
- OpenRouter, Vercel AI Gateway
- Images
- Yes
- Context
- 32,768
d1-ultra 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 |
|---|---|---|---|---|
| OpenRouter, Vercel AI Gateway | $0.04 | Free | Via Vercel's AI Gateway, listed there from 15 October 2026; OpenRouter lists it at $0.042. No output price is listed: it returns probabilities without generating output tokens. | 2026-10-16 |
Decision models like d1-ultra
Every other decision model we track, by independent JevBench score.
| Model | Input / M | JevBench | Weights |
|---|---|---|---|
| d1-ultra | $0.04 | – | Closed |
| Jev 1.13 TypeSafe AI | $0.042 | 77.1 | Closed |
| Clef Cloudflare | $0.24 | 75.3 | Open |
| d1 Liquid AI | $0.02 | 74.4 | Closed |
| OpenAI Decisions (GPT-6 Luna) OpenAI | $0.10 | 73.5 | Closed |
| Microsoft-Decision-1 Microsoft | $0.042 | 70.8 | Closed |
| Clef-flash Cloudflare | $0.038 | 63.8 | Open |
| Clef-omni Cloudflare | $0.15 | 58.3 | Open |
| d1-3B Liquid AI | Self-host | 49.5 | Open |
| d1-omni-600M (experimental) Liquid AI | Self-host | 32.8 | Open |
| Laya Convai Innovations | Free | 32.5 | Open |
| CLM-8B Stanford and NVIDIA | Self-host | 20.1 | Open |
| Strands Decider 2B AWS Strands Labs | Self-host | – | Open |
Compare them all in the decision models table →
d1-ultra FAQ
How much does d1-ultra cost?
d1-ultra costs $0.04 per million input tokens at OpenRouter, Vercel AI Gateway. Via Vercel's AI Gateway, listed there from 15 October 2026; OpenRouter lists it at $0.042. No output price is listed: it returns probabilities without generating output tokens. Checked 16 October 2026.
Is d1-ultra open weight?
No. d1-ultra is only available through OpenRouter, Vercel AI Gateway.
How fast is d1-ultra?
Liquid AI doesn't publish a latency figure.
How does d1-ultra compare with Jev?
JevBench doesn't list d1-ultra yet, so there's no independent comparison. Jev costs $0.042 per million input tokens; d1-ultra costs $0.04.