Last refreshed 2026-10-05. Next refresh: weekly.
Why use d1 on OpenRouter?
OpenRouter offers d1 with pay-as-you-go pricing at $0.04/1M input tokens. OpenRouter is a multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.
Compare d1 across 3 providers to find the best fit for your use caseSetup recipe
Docs fallbackUse the provider REST API or SDKCreate a provider API keymodel: liquid/d1liquid/d1Request example
liquid/d1.Gotchas
- Use provider model ID "liquid/d1", not the LLMReference slug "d1".
Compare d1 Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Liquid AI | $0.04 | Free |
| Vercel AI Gateway | $0.04 | Free |
| OpenRouter | $0.04 | Free |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $0.04 |
| Output tokens | Free |
Capabilities
About d1
d1 is Liquid AI's first decision model. It reads unstructured input (text, images or both) plus one or more typed questions (Noul yes/no, Choice, Score) in a single forward pass and returns calibrated probabilities, generating no output tokens, via POST https://api.liquid.ai/decisions/v1/systemone (TypeSafe SDK-compatible). Liquid gives text decisions as 200–300 ms. Released 2026-09-22 (text). Image input was added 2026-10-05 on the Liquid API under the paid id d1: JPEG/PNG/WebP/GIF, up to 8 images and 10,000 32×32 patches per request, billed as input tokens at 1.5 tokens per patch.