Flux Kontext Max Serverless API
FLUX.1 Kontext [max] transforms textual descriptions into stunning, high-fidelity images with seamless typography integration.
POST /v2/flux-kontext-max · 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-max",
9 seed=30699,
10 prompt="Make her take a selfie in the streets of Freiburg, it's a lovely day out",
11 input_image="https://segmind-resources.s3.amazonaws.com/input/a1adf47e-bfba-45c4-a11f-ae2b732102ad-kontext-max-ip.webp",
12 aspect_ratio="16:9",
13 output_format="png",
14 safety_tolerance=6,
15)
16print(result["status"]) # COMPLETED
17print(result.get("output")) # model output (e.g. media URL)
18print(result["metrics"]["inference_time"]) # server compute seconds
19
20# --- Or submit + poll manually (track request_id, control the cadence) ---
21from segmind import SegmindClient, InferenceFailed, InferenceTimeout
22
23client = SegmindClient() # reads SEGMIND_API_KEY
24payload = {
25 "seed": 30699,
26 "prompt": "Make her take a selfie in the streets of Freiburg, it's a lovely day out",
27 "input_image": "https://segmind-resources.s3.amazonaws.com/input/a1adf47e-bfba-45c4-a11f-ae2b732102ad-kontext-max-ip.webp",
28 "aspect_ratio": "16:9",
29 "output_format": "png",
30 "safety_tolerance": 6,
31}
32job = client.submit_async("flux-kontext-max", **payload)
33print(job.request_id) # available immediately
34try:
35 result = job.wait(timeout=600, interval=1.0)
36except InferenceTimeout as e:
37 print("still running:", e.request_id)
38except InferenceFailed as e:
39 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-max",
9 seed=30699,
10 prompt="Make her take a selfie in the streets of Freiburg, it's a lovely day out",
11 input_image="https://segmind-resources.s3.amazonaws.com/input/a1adf47e-bfba-45c4-a11f-ae2b732102ad-kontext-max-ip.webp",
12 aspect_ratio="16:9",
13 output_format="png",
14 safety_tolerance=6,
15)
16print(result["status"]) # COMPLETED
17print(result.get("output")) # model output (e.g. media URL)
18print(result["metrics"]["inference_time"]) # server compute seconds
19
20# --- Or submit + poll manually (track request_id, control the cadence) ---
21from segmind import SegmindClient, InferenceFailed, InferenceTimeout
22
23client = SegmindClient() # reads SEGMIND_API_KEY
24payload = {
25 "seed": 30699,
26 "prompt": "Make her take a selfie in the streets of Freiburg, it's a lovely day out",
27 "input_image": "https://segmind-resources.s3.amazonaws.com/input/a1adf47e-bfba-45c4-a11f-ae2b732102ad-kontext-max-ip.webp",
28 "aspect_ratio": "16:9",
29 "output_format": "png",
30 "safety_tolerance": 6,
31}
32job = client.submit_async("flux-kontext-max", **payload)
33print(job.request_id) # available immediately
34try:
35 result = job.wait(timeout=600, interval=1.0)
36except InferenceTimeout as e:
37 print("still running:", e.request_id)
38except InferenceFailed as e:
39 print("failed:", e.detail)API Endpoint
https://api.segmind.com/v1/flux-kontext-maxParameters
promptrequiredstringDescribe what you want to generate. Suggest vibrant scenes for maximum creativity.
aspect_ratiooptionalstringSelect the image aspect ratio. Common choices are 16:9 for landscapes or 1:1 for portraits.
"16:9""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)Provide a reference image URL. Use high quality images for best guidance.
"https://segmind-resources.s3.amazonaws.com/input/a1adf47e-bfba-45c4-a11f-ae2b732102ad-kontext-max-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.
2seedoptionalintegerSet a random seed for consistent results. Useful for generating identical outputs in repeated tasks.
123Response 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-maxSubmit — 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