GPT Image 2.5 and MiniMax H3 behind a single request body: model, prompt, parameters and reference images. Every job reports the exact cost it added to your balance.
Pay as you go · No subscription · Sign in with Google
POST /api/v1/generations
"cost": 0.0400 · "result": { "images": [ 1 ] }
Models
Pick the model per request with a single field. The reference in the console is generated from the same definitions the API runs on.
Text to image and image editing with up to 9 reference images in the same call.
prompt: "A border collie and an old english sheepdog hosting a livestream."
Text to video with optional reference images, up to 15 seconds per call.
prompt: "A paper boat drifts across a quiet pond at sunrise."
Capabilities
One account and one bill for every visual your team needs, from first draft to final cut.
Describe the shot you need and get a finished image for the campaign, the product page or the pitch deck, without booking a studio.
Keep the product or the person you already have and change everything around them: new background, new styling, new season.
Turn a script line into a clip that is ready for the feed, framed the way your channel already publishes.
Start from a still that is already approved and let it move, so product, composition and lighting stay on brand.
Queue the whole catalogue, every colourway and every market, and collect the results as they finish.
Every asset arrives as a plain link, ready to store in your CMS, catalogue or ad platform.
Quick start
Sign in with Google
One click creates your account. No passwords, no verification email.
Create an API key
The key is shown once when you create it and can be revoked from the console at any time.
Send a job
POST returns a job id, then read GET /api/v1/generations/{id} until it is succeeded or failed. Failed jobs are never charged.
curl -X POST $BASE_URL/api/v1/generations \
-H 'Authorization: Bearer $API_KEY' \
-H 'Content-Type: application/json' \
-d '{
"model": "gpt-image-2.5",
"prompt": "A border collie and an old english sheepdog hosting a livestream.",
"parameters": { "aspectRatio": "1024x1024" },
"images": []
}'Why HTopAPI
Image jobs are billed per call, video per second of output. Failed jobs are stored with cost 0, so a retry costs nothing extra.
Both models take the same body: model, prompt, parameters and reference images. One key covers every model on the API.
Your balance is the sum of top-ups minus the exact cost of every job, so the number in the console always matches your spend.
Each call is stored with its model, parameters and cost, and summarised per day and per model in the console.
Pricing
Top up a prepaid balance and each job deducts exactly what it cost. Image calls are billed per call, video per second of output, and failed jobs are never charged.
FAQ
Everything above comes from the model definitions and the metering the API actually runs on. Sign in for the full reference and a live cost estimate.
Sign in with Google, open the console and create a key. The key is shown once when you create it, and you can revoke or replace it at any time.
GPT Image 2.5 is billed per call and MiniMax H3 per second of output: 480p at $0.0400/s, 768p at $0.0600/s and 1080p at $0.0800/s. The exact cost is returned in the response and recorded in the console.
Pricing is pay as you go. You top up a prepaid balance and each job deducts exactly what it cost, so there is no subscription and no monthly minimum to cancel. Self-service top-up is not open yet, so contact us and we will add credit to your account.
Video jobs are asynchronous. Submit the job, keep the returned id, then poll GET /api/v1/generations/{id} until the status is succeeded or failed. There is no webhook to configure.
A failed job is stored with cost 0, so nothing is deducted from your balance. Fix the request and submit it again.
Yes. Assets generated through HTopAPI can be used in commercial products and campaigns. You are responsible for the prompts and reference images you submit.
Sign in with Google, create a key, and send a job. Top up a balance when you are ready, and only pay for the jobs that succeed.