POST /fal-ai/flux-pro/kontext/text-to-image

Method: POSTEndpoint: /fal-ai/flux-pro/kontext/text-to-image

This section contains endpoint-specific behavior, parameters, or usage notes for this API.

Request Parameters

Header Parameters

Content-Type
string
Optional
Example:
application/json
Authorization
string
Optional
Default Value:
Bearer {{YOUR_API_KEY}}

Body Parameters application/json

prompt
string
  // provider-specific example normalized for English documentation
Required
Example:
  // provider-specific example normalized for English documentation
seed
integer
Optional
  // provider-specific example normalized for English documentation
guidance_scale
number
Optional
  // provider-specific example normalized for English documentation
sync_mode
boolean
Optional
  // provider-specific example normalized for English documentation
Default Value:
false
num_images
integer
Optional
  // provider-specific example normalized for English documentation
>= 1
<= 4
safety_tolerance
enum<string>
Optional
  // provider-specific example normalized for English documentation
Enum Values:
1
2
3
4
5
6
Default Value:
2
output_format
enum<string>
Optional
  // provider-specific example normalized for English documentation
Enum Values:
jpeg
png
Default Value:
jpeg
aspect_ratio
enum<string>
Optional
  // provider-specific example normalized for English documentation
Enum Values:
21:9
16:9
4:3
3:2
1:1
2:3
3:4
9:16
9:21
Default Value:
1:1
Example
{
"prompt"
:
  // provider-specific example normalized for English documentation
,
"guidance_scale"
:
3.5
,
"num_images"
:
1
,
"safety_tolerance"
:
"2"
,
"output_format"
:
"jpeg"
,
"aspect_ratio"
:
"1:1"
}

Example Request

Shell

curl --location --request POST '/fal-ai/flux-pro/kontext/text-to-image' \
--header 'Authorization: Bearer {{YOUR_API_KEY}}' \
--header 'Content-Type: application/json' \
--data-raw '{
  "prompt": "Example prompt from provider documentation.",
  "guidance_scale": 3.5,
  "num_images": 1,
  "safety_tolerance": "2",
  "output_format": "jpeg",
  "aspect_ratio": "1:1"
}'

Response

🟢 200 Success

Content Type: application/json

Response Schema

status
string
Required
request_id
string
Required
response_url
string
Required
status_url
string
Required
cancel_url
string
Required
queue_position
integer
Required

Example

{
    "status": "IN_QUEUE",
    "request_id": "551a32da-52b2-4be8-bf2f-bfb7cce2b324",
    "response_url": "https://queue.fal.run/fal-ai/flux-1/requests/551a32da-52b2-4be8-bf2f-bfb7cce2b324",
    "status_url": "https://queue.fal.run/fal-ai/flux-1/requests/551a32da-52b2-4be8-bf2f-bfb7cce2b324/status",
    "cancel_url": "https://queue.fal.run/fal-ai/flux-1/requests/551a32da-52b2-4be8-bf2f-bfb7cce2b324/cancel",
    "queue_position": 0
}