---
title: "Generate image"
method: POST
path: "/images/generations"
---

# Generate image

`POST /images/generations`

Generate a new image from a text prompt. Unsupported fields are rejected.

## Request body

- ImageGenerationRequest
  - `model` string, required — Image model ID.
  - `prompt` string, required — Text instruction for the image.
  - `size` string — Requested output size. Support depends on the selected model.
  - `n` 1 — Number of images to generate. Only 1 is supported.

## Response `200`

Generated image response

- ImageResponse
  - `data` ImageData[], required
    - `b64_json` string, required — Generated or edited image bytes encoded as base64.
  - `usage` ImageUsage
    - `cost_usd` string — Decimal USD string for the billed request when cost is available.

## Other responses

- `400` — Invalid gateway request or upstream rejected the request.
- `401` — Missing or invalid LLM7 token.
- `402` — No available balance or allowance.
- `413` — Request body or reference image is too large.
- `429` — Gateway or upstream rate limit.
- `502` — Upstream success response did not match the endpoint contract.
- `503` — Upstream provider is temporarily unavailable.

---

[API](https://skmtc.dev/llm7/apis/llm7-api.md) · [All operations](https://skmtc.dev/llm7/apis/llm7-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/llm7/llm7-api/revisions/2933587838e9/schema)