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Image

SD 3.5 Medium

Credit-based pricing. Supports batch up to 4.

SD 3.5 Medium preview
Output
image
Aspect ratio
1:1, 16:9, 9:16, 4:3, 3:4, Custom
Resolution
512, 1024, 2048
Max batch
4

Inputs

  • Batch up to 4 per request

Example prompt

A cinematic portrait of a violinist performing alone in an abandoned train station during sunset. Warm golden light enters through broken glass ceilings while music sheets fly through the air around the musician.
Try this prompt →
LLM-ready

API & LLM schema

Exact request contract for this model. Agents can fetch it from /api/v1/models?id=fal-ai/stable-diffusion-v35-medium.

POST/api/v1/generate17 fields · 2 required
FieldTypeRequirementContract
model_idconstantRequiredArtEmotion model identifier.
extraobjectOptionalModel-specific settings may also be nested here.
max_creditsnumberOptionalReject before submission if the estimated list price exceeds this cap. · Range: 1–…
webhook_urlstringOptionalFormat: uri
webhook_secretstringOptionalOptional model input.
folder_idstringOptionalOptional model input.
promptstringRequiredOptional model input.
output_formatstringOptionalThe format of the generated image. · Allowed: jpeg, png · Default: jpeg
guidance_scalenumberOptionalThe CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt when looking for a related image to show · Default: 4.5 · Range: 0–20
num_inference_stepsnumberOptionalThe number of inference steps to perform. · Default: 40 · Range: 1–50
seedintegerOptionalThe same seed and the same prompt given to the same version of the model will output the same image every time.
negative_promptstringOptionalThe negative prompt to use. Use it to address details that you don't want in the image. This could be colors, objects, scenery and even the small deta · Default:
enable_safety_checkerbooleanOptionalIf set to true, the safety checker will be enabled. · Default: true
auto_fixbooleanOptionalSilently rounds the requested image size to the nearest value the model supports. Disable to get an error instead of a rounded size. · Default: true
aspect_ratiostringOptionalAllowed: 1:1, 16:9, 9:16, 4:3, 3:4, Custom
resolutionstringOptionalAllowed: 512, 1024, 2048
num_imagesintegerOptionalRange: 1–4
Minimal request example
{
  "model_id": "fal-ai/stable-diffusion-v35-medium",
  "prompt": "A cinematic portrait of a violinist performing alone in an abandoned train station during sunset. Warm golden light enters through broken glass ceilings while music sheets fly through the air around the musician."
}
Raw JSON Schema
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://www.artemotion.ai/api/v1/models?id=fal-ai%2Fstable-diffusion-v35-medium",
  "title": "SD 3.5 Medium generation request",
  "description": "Request body accepted by POST /api/v1/generate for fal-ai/stable-diffusion-v35-medium.",
  "type": "object",
  "properties": {
    "model_id": {
      "type": "string",
      "const": "fal-ai/stable-diffusion-v35-medium",
      "description": "ArtEmotion model identifier."
    },
    "extra": {
      "type": "object",
      "additionalProperties": true,
      "description": "Model-specific settings may also be nested here."
    },
    "max_credits": {
      "type": "number",
      "minimum": 1,
      "description": "Reject before submission if the estimated list price exceeds this cap."
    },
    "webhook_url": {
      "type": "string",
      "format": "uri",
      "maxLength": 2048
    },
    "webhook_secret": {
      "type": "string",
      "maxLength": 512
    },
    "folder_id": {
      "type": "string"
    },
    "prompt": {
      "type": "string"
    },
    "output_format": {
      "title": "Output Format",
      "description": "The format of the generated image.",
      "default": "jpeg",
      "type": "string",
      "enum": [
        "jpeg",
        "png"
      ]
    },
    "guidance_scale": {
      "title": "Guidance Scale",
      "description": "The CFG (Classifier Free Guidance) scale is a measure of how close you want the model to stick to your prompt when looking for a related image to show",
      "default": 4.5,
      "type": "number",
      "minimum": 0,
      "maximum": 20
    },
    "num_inference_steps": {
      "title": "Num Inference Steps",
      "description": "The number of inference steps to perform.",
      "default": 40,
      "type": "number",
      "minimum": 1,
      "maximum": 50,
      "multipleOf": 1
    },
    "seed": {
      "title": "Seed",
      "description": "The same seed and the same prompt given to the same version of the model will output the same image every time.",
      "type": "integer"
    },
    "negative_prompt": {
      "title": "Negative Prompt",
      "description": "The negative prompt to use. Use it to address details that you don't want in the image. This could be colors, objects, scenery and even the small deta",
      "default": "",
      "type": "string"
    },
    "enable_safety_checker": {
      "title": "Enable Safety Checker",
      "description": "If set to true, the safety checker will be enabled.",
      "default": true,
      "type": "boolean"
    },
    "auto_fix": {
      "title": "Auto Fix Size",
      "description": "Silently rounds the requested image size to the nearest value the model supports. Disable to get an error instead of a rounded size.",
      "default": true,
      "type": "boolean"
    },
    "aspect_ratio": {
      "type": "string",
      "enum": [
        "1:1",
        "16:9",
        "9:16",
        "4:3",
        "3:4",
        "Custom"
      ]
    },
    "resolution": {
      "type": "string",
      "enum": [
        "512",
        "1024",
        "2048"
      ]
    },
    "num_images": {
      "type": "integer",
      "minimum": 1,
      "maximum": 4
    }
  },
  "required": [
    "model_id",
    "prompt"
  ],
  "additionalProperties": false
}

FAQ

How much does SD 3.5 Medium cost on ArtEmotion?

Credit-based pricing. You pay in ArtEmotion credits — every plan and top-up converts USD to credits at a fixed rate.

Do I get my credits back if SD 3.5 Medium fails?

Yes — failed generations are never charged. The credits are released back to your balance automatically.

Can I call SD 3.5 Medium from the API?

Yes. Use POST /api/v1/generate with model_id: "fal-ai/stable-diffusion-v35-medium". See the API reference for the full schema.

Where are my generations stored?

Every output is saved to your personal Library. You can export or delete everything any time from Privacy & deletion.

Ready to generate with SD 3.5 Medium?

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