Flux Kontext Pro Serverless API
FLUX.1 Kontext Pro transforms text prompts into high-quality, customized images with remarkable efficiency and precision.
POST /v2/flux-kontext-pro · submit + poll 1# pip install "segmind>=1.1.0"
2# export SEGMIND_API_KEY="YOUR_API_KEY"
3import segmind
4
5# Async (v2): submit to the queue and block until COMPLETED.
6# run() returns the final result dict (600s deadline, 1.0s poll by default).
7result = segmind.run(
8 "flux-kontext-pro",
9 prompt="make this a real photograph",
10 input_image="https://segmind-resources.s3.amazonaws.com/input/e9150752-b054-445c-a988-c13c6038dfa9-kontext-pro-ip.webp",
11 aspect_ratio="match_input_image",
12 output_format="png",
13 safety_tolerance=6,
14)
15print(result["status"]) # COMPLETED
16print(result.get("output")) # model output (e.g. media URL)
17print(result["metrics"]["inference_time"]) # server compute seconds
18
19# --- Or submit + poll manually (track request_id, control the cadence) ---
20from segmind import SegmindClient, InferenceFailed, InferenceTimeout
21
22client = SegmindClient() # reads SEGMIND_API_KEY
23payload = {
24 "prompt": "make this a real photograph",
25 "input_image": "https://segmind-resources.s3.amazonaws.com/input/e9150752-b054-445c-a988-c13c6038dfa9-kontext-pro-ip.webp",
26 "aspect_ratio": "match_input_image",
27 "output_format": "png",
28 "safety_tolerance": 6,
29}
30job = client.submit_async("flux-kontext-pro", **payload)
31print(job.request_id) # available immediately
32try:
33 result = job.wait(timeout=600, interval=1.0)
34except InferenceTimeout as e:
35 print("still running:", e.request_id)
36except InferenceFailed as e:
37 print("failed:", e.detail) 1# pip install "segmind>=1.1.0"
2# export SEGMIND_API_KEY="YOUR_API_KEY"
3import segmind
4
5# Async (v2): submit to the queue and block until COMPLETED.
6# run() returns the final result dict (600s deadline, 1.0s poll by default).
7result = segmind.run(
8 "flux-kontext-pro",
9 prompt="make this a real photograph",
10 input_image="https://segmind-resources.s3.amazonaws.com/input/e9150752-b054-445c-a988-c13c6038dfa9-kontext-pro-ip.webp",
11 aspect_ratio="match_input_image",
12 output_format="png",
13 safety_tolerance=6,
14)
15print(result["status"]) # COMPLETED
16print(result.get("output")) # model output (e.g. media URL)
17print(result["metrics"]["inference_time"]) # server compute seconds
18
19# --- Or submit + poll manually (track request_id, control the cadence) ---
20from segmind import SegmindClient, InferenceFailed, InferenceTimeout
21
22client = SegmindClient() # reads SEGMIND_API_KEY
23payload = {
24 "prompt": "make this a real photograph",
25 "input_image": "https://segmind-resources.s3.amazonaws.com/input/e9150752-b054-445c-a988-c13c6038dfa9-kontext-pro-ip.webp",
26 "aspect_ratio": "match_input_image",
27 "output_format": "png",
28 "safety_tolerance": 6,
29}
30job = client.submit_async("flux-kontext-pro", **payload)
31print(job.request_id) # available immediately
32try:
33 result = job.wait(timeout=600, interval=1.0)
34except InferenceTimeout as e:
35 print("still running:", e.request_id)
36except InferenceFailed as e:
37 print("failed:", e.detail)API Endpoint
https://api.segmind.com/v1/flux-kontext-proParameters
promptrequiredstringDescribes the desired output or edit. To create lively imagery, try instructions like 'Turn this into a cyberpunk cityscape.'
aspect_ratiooptionalstringDefines the image's width-to-height ratio. Choose '16:9' for widescreen or '1:1' for square images.
"match_input_image""match_input_image""1:1""16:9""9:16""4:3""3:4""3:2""2:3""4:5""5:4"+4 moreinput_imageoptionalstring (uri)Image to edit or guide the generation. Use high-resolution images for the best quality results.
"https://segmind-resources.s3.amazonaws.com/input/e9150752-b054-445c-a988-c13c6038dfa9-kontext-pro-ip.webp"output_formatoptionalstringOutput format for the generated image.
"png""jpg""png"safety_toleranceoptionalintegerSafety tolerance, 1 is most strict and 6 is most permissive. 2 is currently the maximum allowed when input images are used.
2seedoptionalintegerSets the random seed for generation consistency. Use specific numbers for repeatable results.
nullResponse Type
Returns: Image
Asynchronous requests (v2)
Use Async for video, long-running (>~60s), or high-concurrency workloads; Sync is simplest for fast image & LLM calls. Async submits a request and you poll it to completion.
- 1
POST /v2/flux-kontext-proSubmit — returns request_id, status_url, response_url
- 2
GET /v2/requests/{id}/statusPoll — until COMPLETED or FAILED
- 3
GET /v2/requests/{id}Result — final response body
Status states
- A FAILED request is served as HTTP 422 — the body still carries the error detail.
- An unknown or expired request_id returns HTTP 404.
- Results are retained for 1 hour, then expire.
- Content / RAI blocks surface as FAILED, not a separate state.
- Track completion by polling the status endpoint.
Common Error Codes
The API returns standard HTTP status codes. Detailed error messages are provided in the response body.
Bad Request
Invalid parameters or request format
Unauthorized
Missing or invalid API key
Forbidden
Insufficient permissions
Not Found
Model or endpoint not found
Insufficient Credits
Not enough credits to process request
Rate Limited
Too many requests
Server Error
Internal server error
Bad Gateway
Service temporarily unavailable
Timeout
Request timed out