Image

Flux 2 Flex

Credit-based pricing.

Try Flux 2 Flex →Compare models

Output

image

Aspect ratio

1:1, 16:9, 9:16, 4:3, 3:4, 21:9, 9:21, Custom

Resolution

512, 1024, 2048

Example prompt

An adorable tiny dragon chef cooking ramen inside a cozy Japanese street food stand at night, warm lantern light, steam rising dramatically, Pixar-quality 3D character design, ultra detailed textures, cinematic lighting

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/flux-2-flex.

POST/api/v1/generate15 fields · 2 required

Field	Type	Requirement	Contract
`model_id`	constant	Required	ArtEmotion model identifier.
`extra`	object	Optional	Model-specific settings may also be nested here.
`max_credits`	number	Optional	Reject before submission if the estimated list price exceeds this cap. · Range: 1–…
`webhook_url`	string	Optional	Format: uri
`webhook_secret`	string	Optional	Optional model input.
`folder_id`	string	Optional	Optional model input.
`prompt`	string	Required	Optional model input.
`safety_tolerance`	number	Optional	Safety tolerance level — 1 = most strict, 5 = most permissive. · Allowed: 1, 2, 3, 4, 5 · Default: 2
`num_inference_steps`	number	Optional	The number of inference steps to perform. · Default: 28 · Range: 2–50
`guidance_scale`	number	Optional	Guidance Scale — how closely the model follows the prompt. · Default: 3.5 · Range: 1.5–10
`seed`	integer	Optional	The seed to use for the generation.
`enable_safety_checker`	boolean	Optional	Whether to enable the safety checker. · Default: true
`output_format`	string	Optional	The format of the generated image. · Allowed: jpeg, png · Default: jpeg
`aspect_ratio`	string	Optional	Allowed: 1:1, 16:9, 9:16, 4:3, 3:4, 21:9, 9:21, Custom
`resolution`	string	Optional	Allowed: 512, 1024, 2048

Minimal request example

{
  "model_id": "fal-ai/flux-2-flex",
  "prompt": "An adorable tiny dragon chef cooking ramen inside a cozy Japanese street food stand at night, warm lantern light, steam rising dramatically, Pixar-quality 3D character design, ultra detailed textures, cinematic lighting"
}

Raw JSON Schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://www.artemotion.ai/api/v1/models?id=fal-ai%2Fflux-2-flex",
  "title": "Flux 2 Flex generation request",
  "description": "Request body accepted by POST /api/v1/generate for fal-ai/flux-2-flex.",
  "type": "object",
  "properties": {
    "model_id": {
      "type": "string",
      "const": "fal-ai/flux-2-flex",
      "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"
    },
    "safety_tolerance": {
      "title": "Safety Tolerance",
      "description": "Safety tolerance level — 1 = most strict, 5 = most permissive.",
      "default": "2",
      "type": "number",
      "enum": [
        1,
        2,
        3,
        4,
        5
      ]
    },
    "num_inference_steps": {
      "title": "Steps",
      "description": "The number of inference steps to perform.",
      "default": 28,
      "type": "number",
      "minimum": 2,
      "maximum": 50,
      "multipleOf": 1
    },
    "guidance_scale": {
      "title": "Guidance Scale",
      "description": "Guidance Scale — how closely the model follows the prompt.",
      "default": 3.5,
      "type": "number",
      "minimum": 1.5,
      "maximum": 10,
      "multipleOf": 0.1
    },
    "seed": {
      "title": "Seed",
      "description": "The seed to use for the generation.",
      "type": "integer"
    },
    "enable_safety_checker": {
      "title": "Enable Safety Checker",
      "description": "Whether to enable the safety checker.",
      "default": true,
      "type": "boolean"
    },
    "output_format": {
      "title": "Output Format",
      "description": "The format of the generated image.",
      "default": "jpeg",
      "type": "string",
      "enum": [
        "jpeg",
        "png"
      ]
    },
    "aspect_ratio": {
      "type": "string",
      "enum": [
        "1:1",
        "16:9",
        "9:16",
        "4:3",
        "3:4",
        "21:9",
        "9:21",
        "Custom"
      ]
    },
    "resolution": {
      "type": "string",
      "enum": [
        "512",
        "1024",
        "2048"
      ]
    }
  },
  "required": [
    "model_id",
    "prompt"
  ],
  "additionalProperties": false
}

Browse schemas for every ArtEmotion model →

FAQ

How much does Flux 2 Flex 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 Flux 2 Flex fails?

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

Can I call Flux 2 Flex from the API?

Yes. Use POST /api/v1/generate with model_id: "fal-ai/flux-2-flex". 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 Flux 2 Flex?

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