Laya

September 18, 2026512 context

Laya is an open-weight, non-autoregressive System 1 decision model. Its 421M-parameter English checkpoint pairs a ModernBERT-large encoder with a decision head that evaluates a shared text or JSON state against typed choice, score, and boolean questions in a single forward pass. It returns probabilities and confidence instead of prose, which suits ticket routing, moderation, guardrails, relevance scoring, and other low-latency automation.

Laya is served through Runware's compatible endpoints, which take another provider's request format. Point the SDK you already use at Runware by changing the base URL and the API key, and set model to runware:laya@1.

Requests and responses keep the provider's format, so its reference documents every parameter.

Endpoint	Format
`/v1/decisions`	TypeSafe decisions

Decisions

cURL

curl -X POST https://api.runware.ai/v1/decisions \
  -H "Authorization: Bearer $RUNWARE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "runware:laya@1",
    "state": "I was charged twice. Please fix this ASAP.",
    "questions": {
      "category": {
        "type": "choice",
        "instructions": "What is this ticket about?",
        "criteria": {"billing": null, "technical": null, "other": null}
      }
    }
  }'

Python

from typesafe_sdk import Choice, TypeSafeClient

client = TypeSafeClient(
    api_key="your_runware_api_key",
    base_url="https://api.runware.ai",
)

response = client.system_one(
    model="runware:laya@1",
    state={"document": "I was charged twice. Please fix this ASAP."},
    questions={
        "category": Choice(
            instructions="What is this ticket about?",
            criteria={"billing": None, "technical": None, "other": None},
        ),
    },
)

print(response.answers["category"].choice)

TypeScript

import { choice, TypeSafeClient } from '@typesafe-ai/sdk';

const client = new TypeSafeClient({
  apiKey: 'your_runware_api_key',
  baseURL: 'https://api.runware.ai',
});

const response = await client.systemOne({
  model: 'runware:laya@1',
  state: { document: 'I was charged twice. Please fix this ASAP.' },
  questions: {
    category: choice('What is this ticket about?', {
      billing: null,
      technical: null,
      other: null,
    }),
  },
});

console.log(response.answers.category.choice);

Compatible APIs covers the question types and the TypeSafe SDK setup, and the TypeSafe docs lists every parameter.