Stable Diffusion 3

curl --request POST \
  --url https://api.maxapi.ai/sd/v2beta/stable-image/generate/sd3 \
  --header 'accept: <accept>' \
  --header 'authorization: <authorization>' \
  --header 'content-type: multipart/form-data' \
  --form prompt= \
  --form image='@example-file'

import requests

url = "https://api.maxapi.ai/sd/v2beta/stable-image/generate/sd3"

files = { "image": ("example-file", open("example-file", "rb")) }
payload = { "prompt": "" }
headers = {
    "authorization": "<authorization>",
    "accept": "<accept>"
}

response = requests.post(url, data=payload, files=files, headers=headers)

print(response.text)

const form = new FormData();
form.append('prompt', '');
form.append('image', '{
  "fileName": "example-file"
}');

const options = {
  method: 'POST',
  headers: {authorization: '<authorization>', accept: '<accept>'}
};

options.body = form;

fetch('https://api.maxapi.ai/sd/v2beta/stable-image/generate/sd3', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.maxapi.ai/sd/v2beta/stable-image/generate/sd3"

	payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"prompt\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"image\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n{\r\n  \"fileName\": \"example-file\"\r\n}\r\n-----011000010111000001101001--")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("authorization", "<authorization>")
	req.Header.Add("accept", "<accept>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.maxapi.ai/sd/v2beta/stable-image/generate/sd3")
  .header("authorization", "<authorization>")
  .header("accept", "<accept>")
  .body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"prompt\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"image\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n{\r\n  \"fileName\": \"example-file\"\r\n}\r\n-----011000010111000001101001--")
  .asString();

"<string>"

{
  "id": "a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4",
  "name": "bad_request",
  "errors": [
    "some-field: is required"
  ]
}

{
  "id": "ed14db44362126aab3cbd25cca51ffe3",
  "name": "content_moderation",
  "errors": [
    "Your request was flagged by our content moderation system, as a result your request was denied and you were not charged."
  ]
}

{
  "id": "4212a4b66fbe1cedca4bf2133d35dca5",
  "name": "payload_too_large",
  "errors": [
    "body: payloads cannot be larger than 10MiB in size"
  ]
}

{
  "id": "ff54b236a3acdde1522cb1ba641c43ed",
  "name": "invalid_language",
  "errors": [
    "English is the only supported language for this service."
  ]
}

{
  "id": "rate_limit_exceeded",
  "name": "rate_limit_exceeded",
  "errors": [
    "You have exceeded the rate limit of 150 requests within a 10 second period, and have been timed out for 60 seconds."
  ]
}

{
  "id": "2a1b2d4eafe2bc6ab4cd4d5c6133f513",
  "name": "internal_error",
  "errors": [
    "An unexpected server error has occurred, please try again later."
  ]
}

Stable Diffusion 3

Generate an image using a Stable Diffusion 3 model:

SD3 Medium - the 2 billion parameter model
SD3 Large - the 8 billion parameter model
SD3 Large Turbo - the 8 billion parameter model with a faster inference time

This API is powered by Fireworks AI. API status can be reviewed here.

Try it out

Grab your API key and head over to one of the following sites:

How to use

Please invoke this endpoint with a POST request.

The headers of the request must include an API key in the authorization field. The body of the request must be multipart/form-data. The accept header should be set to one of the following:

image/* to receive the image in the format specified by the output_format parameter.
application/json to receive the image encoded as base64 in a JSON response.

Generating with a prompt

Commonly referred to as text-to-image, this mode generates an image from text alone. While the only required
parameter is the prompt, it also supports an aspect_ratio parameter which can be used to control the aspect ratio of the generated image.

**Generating with a prompt and an image**

Commonly referred to as image-to-image, this mode also generates an image from text but uses an existing image as the starting point. The required parameters are:

prompt - text to generate the image from
image - the image to use as the starting point for the generation
strength - controls how much influence the image parameter has on the output image
mode - must be set to image-to-image

Note: maximum request size is 10MiB.

Optional Parameters:

Both modes support the following optional parameters:

model - the model to use (SD3 Medium, SD3 Large, or SD3 Large Turbo)
output_format - the the format of the output image
seed - the randomness seed to use for the generation
negative_prompt - keywords of what you do not wish to see in the output image

Note: for more details about these parameters please see the request schema below.

Output

The resolution of the generated image will be 1MP. The default resolution is 1024x1024.

Credits

SD3 Medium: Flat rate of 3.5 credits per successful generation.
SD3 Large: Flat rate of 6.5 credits per successful generation.
SD3 Large Turbo: Flat rate of 4 credits per successful generation.

As always, you will not be charged for failed generations.

POST

https://api.maxapi.ai

v2beta

stable-image

generate

sd3

Stable Diffusion 3

curl --request POST \
  --url https://api.maxapi.ai/sd/v2beta/stable-image/generate/sd3 \
  --header 'accept: <accept>' \
  --header 'authorization: <authorization>' \
  --header 'content-type: multipart/form-data' \
  --form prompt= \
  --form image='@example-file'

import requests

url = "https://api.maxapi.ai/sd/v2beta/stable-image/generate/sd3"

files = { "image": ("example-file", open("example-file", "rb")) }
payload = { "prompt": "" }
headers = {
    "authorization": "<authorization>",
    "accept": "<accept>"
}

response = requests.post(url, data=payload, files=files, headers=headers)

print(response.text)

const form = new FormData();
form.append('prompt', '');
form.append('image', '{
  "fileName": "example-file"
}');

const options = {
  method: 'POST',
  headers: {authorization: '<authorization>', accept: '<accept>'}
};

options.body = form;

fetch('https://api.maxapi.ai/sd/v2beta/stable-image/generate/sd3', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.maxapi.ai/sd/v2beta/stable-image/generate/sd3"

	payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"prompt\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"image\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n{\r\n  \"fileName\": \"example-file\"\r\n}\r\n-----011000010111000001101001--")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("authorization", "<authorization>")
	req.Header.Add("accept", "<accept>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.maxapi.ai/sd/v2beta/stable-image/generate/sd3")
  .header("authorization", "<authorization>")
  .header("accept", "<accept>")
  .body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"prompt\"\r\n\r\n\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"image\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\n{\r\n  \"fileName\": \"example-file\"\r\n}\r\n-----011000010111000001101001--")
  .asString();

"<string>"

{
  "id": "a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4",
  "name": "bad_request",
  "errors": [
    "some-field: is required"
  ]
}

{
  "id": "ed14db44362126aab3cbd25cca51ffe3",
  "name": "content_moderation",
  "errors": [
    "Your request was flagged by our content moderation system, as a result your request was denied and you were not charged."
  ]
}

{
  "id": "4212a4b66fbe1cedca4bf2133d35dca5",
  "name": "payload_too_large",
  "errors": [
    "body: payloads cannot be larger than 10MiB in size"
  ]
}

{
  "id": "ff54b236a3acdde1522cb1ba641c43ed",
  "name": "invalid_language",
  "errors": [
    "English is the only supported language for this service."
  ]
}

{
  "id": "rate_limit_exceeded",
  "name": "rate_limit_exceeded",
  "errors": [
    "You have exceeded the rate limit of 150 requests within a 10 second period, and have been timed out for 60 seconds."
  ]
}

{
  "id": "2a1b2d4eafe2bc6ab4cd4d5c6133f513",
  "name": "internal_error",
  "errors": [
    "An unexpected server error has occurred, please try again later."
  ]
}

Headers

authorization

string

required

Your Stability API key, used to authenticate your requests. Although you may have multiple keys in your account, you should use the same key for all requests to this API.

Minimum string length: 1

content-type

string

required

The content type of the request body. Do not manually specify this header; your HTTP client library will automatically include the appropriate boundary parameter.

Minimum string length: 1

Example:

"multipart/form-data"

enum<string>

default:image/*

required

Specify image/* to get the image bytes directly. Otherwise specify application/json to receive the image as base64 encoded JSON.

Available options:

application/json,

image/*

Body

multipart/form-data

prompt

string

required

What you wish to see in the output image. A strong, descriptive prompt that clearly defines elements, colors, and subjects will lead to better results.

Required string length: 1 - 10000

Example:

""

mode

enum<string>

default:text-to-image

Controls whether this is a text-to-image or image-to-image generation, which affects which parameters are required:

text-to-image requires only the prompt parameter
image-to-image requires the prompt, image, and strength parameters

Available options:

image-to-image,

text-to-image

Example:

"text-to-image"

image

file

The image to use as the starting point for the generation.

Supported formats:

jpeg
png
webp

Supported dimensions:

Every side must be at least 64 pixels

Important: This parameter is only valid for image-to-image requests.

strength

number

Sometimes referred to as denoising, this parameter controls how much influence the image parameter has on the generated image. A value of 0 would yield an image that is identical to the input. A value of 1 would be as if you passed in no image at all.

Important: This parameter is only valid for image-to-image requests.

Required range: 0 <= x <= 1

Example:

""

aspect_ratio

enum<string>

default:1:1

Controls the aspect ratio of the generated image. Defaults to 1:1.

Important: This parameter is only valid for text-to-image requests.

Available options:

16:9,

1:1,

21:9,

2:3,

3:2,

4:5,

5:4,

9:16,

9:21

Example:

"1:1"

model

enum<string>

default:sd3-large

The model to use for generation.

sd3-medium requires 3.5 credits per generation
sd3-large requires 6.5 credits per generation
sd3-large-turbo requires 4 credits per generation

Available options:

sd3-large,

sd3-large-turbo,

sd3-medium

Example:

"sd3-large"

seed

number

default:0

A specific value that is used to guide the 'randomness' of the generation. (Omit this parameter or pass 0 to use a random seed.)

Required range: 0 <= x <= 4294967294

Example:

""

output_format

enum<string>

default:png

Dictates the content-type of the generated image.

Available options:

jpeg,

png

Example:

"png"

negative_prompt

string

Keywords of what you do not wish to see in the output image. This is an advanced feature.

Important: This parameter does not work with sd3-large-turbo.

Maximum string length: 10000

Example:

""

Response

Request succeeded.

The response is of type file.

API overview

Model APIs

Stable Diffusion 3

Try it out

How to use

Generating with a prompt

**Generating with a prompt and an image**

Optional Parameters:

Output

Credits

Headers

Body

Response