# d1 (Liquid AI) — API pricing and providers

> Structured decisions. Model id `liquid/d1`. Text model by Liquid AI.

- Page: https://infro.io/models/liquid/d1
- Vendor: Liquid AI (https://infro.io/models/liquid)
- Modality: Text
- Endpoint through INFRO: `POST /v1/decisions` at https://api.infro.io/v1
- List rate: $0.04 per 1M input tokens and output tokens free
- Rates checked: 2026-10-05

Rates are Liquid AI's published list price: what the customer's own provider account bills, not an INFRO charge. INFRO is a BYOK control plane; it charges a software subscription and adds 0% to model spend.

## Providers that serve it

| Provider | Model id sent |
| --- | --- |
| OpenRouter | `liquid/d1` |
| Liquid AI | `d1` |

## Questions

### How much does the d1 API cost?

Liquid AI's published list rate for d1 is $0.04 per 1M input tokens and output tokens free (checked 2026-10-05). The provider account you connect bills you at the rate on that account, so a negotiated rate replaces the list rate. INFRO adds 0% to model spend.

### Which providers serve d1?

In INFRO's provider registry, d1 can be served by OpenRouter and Liquid AI. You connect your own account with any of them, and INFRO routes and fails over between the ones you connect.

### What is the d1 model ID?

Request it from INFRO as "liquid/d1". INFRO sends each provider its own id: OpenRouter "liquid/d1", Liquid AI "d1".

### Does INFRO mark up d1 usage?

No. Liquid AI or the provider you connect bills model usage to your own account. INFRO charges a software subscription for routing, failover, observability, budgets and policy, and takes 0% of model spend.