# d1-ultra

Decision models · checked 2026-10-16 · https://dbggr.dev/models/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](https://vercel.com/ai-gateway/models/d1-ultra) |

## Decision models like d1-ultra

| Model | Input / M | JevBench | Weights |
|---|---|---|---|
| d1-ultra | $0.04 | – | Closed |
| [Jev 1.13](https://dbggr.dev/models/jev/) | $0.042 | 77.1 | Closed |
| [Clef](https://dbggr.dev/models/clef/) | $0.24 | 75.3 | Open |
| [d1](https://dbggr.dev/models/d1/) | $0.02 | 74.4 | Closed |
| [OpenAI Decisions (GPT-6 Luna)](https://dbggr.dev/models/openai-decisions/) | $0.10 | 73.5 | Closed |
| [Microsoft-Decision-1](https://dbggr.dev/models/microsoft-decision-1/) | $0.042 | 70.8 | Closed |
| [Clef-flash](https://dbggr.dev/models/clef-flash/) | $0.038 | 63.8 | Open |
| [Clef-omni](https://dbggr.dev/models/clef-omni/) | $0.15 | 58.3 | Open |
| [d1-3B](https://dbggr.dev/models/d1-3b/) | Self-host | 49.5 | Open |
| [d1-omni-600M (experimental)](https://dbggr.dev/models/d1-omni-600m/) | Self-host | 32.8 | Open |
| [Laya](https://dbggr.dev/models/laya/) | Free | 32.5 | Open |
| [CLM-8B](https://dbggr.dev/models/clm-8b/) | Self-host | 20.1 | Open |
| [Strands Decider 2B](https://dbggr.dev/models/strands-decider-2b/) | Self-host | – | Open |

## 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.