D1 Ultra

Oct 2026
D1 Ultra
Compare in
on
—per task?
$0.042 / —per 1M in / out?
—output speed?
33Kcontext

FAQ

How much does D1 Ultra cost?›

$0.042 per 1M input tokens and — per 1M output tokens.

Is D1 Ultra free to use?›

There is no free API; the cheapest paid price is $0.042 per 1M input tokens.

How good is D1 Ultra, and what is it best at?›

#1 of 15 in Decision models.

Is D1 Ultra better than Decider v1.2?›

On AA Decision · When2Call accuracy, D1 Ultra scores 92.6 vs 87.7 — higher.

How can I use D1 Ultra?›

Through the API of OpenRouter.

What is the context window of D1 Ultra?›

33K tokens.

When was D1 Ultra released? Is there a newer version?›

Released 2026-10-15. It is the current version in its line.

Is D1 Ultra open source?›

No, D1 Ultra is a closed model available through an API. The closest open-weights option here is Decider v1.2.

Can D1 Ultra read images?›

It accepts text and images as input.

What is D1 Ultra?›

D1 Ultra is a closed language model from Liquid AI, released Oct 2026.

What are the best alternatives to D1 Ultra?›

Decider v1.2 (open weights).