GPT Image 2 · synchronous · pay-per-image

Image generation API.
Crypto top-up.

One endpoint, one key, one balance. Generate with GPT Image 2 and other top models — top up in USDT, TON, BTC or ETH. No KYC, no subscriptions, no card.

Get API key → Read the docs
No KYC USDT 1:1 Sync response · no polling $1 minimum 

    

  







  

    
Why WOWFLOW API

    
Built for developers who hate frictions.

    

      OpenAI's models without OpenAI's billing. Pay only for what you generate, top up in crypto, get a result URL in one POST.
    


    

      

        
⚡

        
Synchronous response

        
No webhooks, no polling. POST returns the result URL in the same call — typically 8–15 sec for GPT Image 2.

      

      

        
🔑

        
Simple auth

        
One bearer token. Create it in the dashboard, revoke any time, rotate without redeploying.

      

      

        
💰

        
Crypto top-up

        
USDT, TON, BTC, ETH via CryptoBot. 0% fees, 1:1 to USD, no KYC. Funds credit instantly.

      

      

        
🔁

        
Auto-refund on failure

        
If a generation fails upstream, your balance is refunded automatically. Zero manual reconciliation.

      

      

        
🧩

        
One API, many models

        
GPT Image 2, Nano Banana Pro, Kling 3, Seedance 2 — same endpoint, just swap the model id.

      

      

        
🖼️

        
I2I in one call

        
Pass a reference image URL with the prompt — the router detects it and routes to image-to-image automatically.

      

      

        
📊

        
Full transaction log

        
Every spend, every top-up, every refund — readable via GET /transactions. Reconcile in a spreadsheet.

      

      

        
🌐

        
CORS-enabled

        
Call directly from the browser, server, or edge worker. CORS is open — auth is per-key.

      

    

  







  

    

      

        
Code sample

        
Image-to-image in 8 lines.

        

          Pass a public HTTPS URL of your reference image and a prompt — the API returns a permanent URL with the result. No multipart, no base64, no upload step on our side.
        

        
    
          
  • Just add image: no separate i2i model id. The router detects refs by the presence of the field.
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  • Synchronous: one POST, one response. status: "completed" + result_url ready to render.
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  • Aspect ratio: pass via input.aspect_ratio — 1:1, 2:3, 3:2, or auto.
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  • Variants: need N versions? Fire N requests in parallel — same cost.
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Pricing

    
Pay-per-image. No subscription.

    

      All prices are final — no hidden fees, no overage, no per-seat. Top up in USD-equivalent, spend across any model. $1 minimum top-up.
    


    

      

        
Draft tier

        
GPT Image 2 · 1K

        
$0.08

        
per image · 1K, any of 9 ratios

        
    
          
  • Text → image and image → image
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  • Sync · 8–15 sec
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  • Auto-refund on failure
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model: gpt-image-2-1k

      


      

        
★ Most popular

        
GPT Image 2 · 2K

        
$0.11

        
per image · 2K resolution

        
    
          
  • Text → image and image → image
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  • Sharper details · social-ready
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  • Auto-refund on failure
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model: gpt-image-2-2k

      


      

        
Pro tier

        
GPT Image 2 · 4K

        
$0.14

        
per image · 4K resolution

        
    
          
  • Text → image and image → image
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  • Print-grade detail
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  • Auto-refund on failure
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model: gpt-image-2-4k

      

    


    
All models on the same API


    

      

        Model
        model id
        Price
        Type
      

      

        
Nano Banana Pro 1KMulti-reference image editing

        
nano-banana-pro-1k

        
$0.11

        
image

      

      

        
Nano Banana Pro 2KMulti-reference image editing

        
nano-banana-pro-2k

        
$0.11

        
image

      

      

        
Nano Banana Pro 4KMulti-reference image editing

        
nano-banana-pro-4k

        
$0.20

        
image

      

      

        
GPT Image 2 · 1KText → image and precise editing

        
gpt-image-2-1k

        
$0.08

        
image

      

      

        
GPT Image 2 · 2KText → image and precise editing

        
gpt-image-2-2k

        
$0.11

        
image

      

      

        
GPT Image 2 · 4KText → image and precise editing

        
gpt-image-2-4k

        
$0.14

        
image

      

      

        
Seedream 5 Pro 1KPhotoreal detail and typography

        
seedream-5-pro-1k

        
$0.09

        
image

      

      

        
Seedream 5 Pro 2KPhotoreal detail and typography

        
seedream-5-pro-2k

        
$0.17

        
image

      

      

        
Seedream 5 Pro Edit 1KPrecision editing of your image

        
seedream-5-pro-edit-1k

        
$0.09

        
image

      

      

        
Seedream 5 Pro Edit 2KPrecision editing of your image

        
seedream-5-pro-edit-2k

        
$0.17

        
image

      

      

        
Kling 3 Pro 1080p · 10s + audioImage → video with synced audio

        
kling-3-pro-1080p-10s-audio

        
$1.68

        
video

      

      

        
Kling 3 Pro 720p · 10sImage → video

        
kling-3-pro-720p-10s

        
$0.90

        
video

      

      

        
Kling 3 Standard 1080p · 5sImage → video

        
kling-3-standard-1080p-5s

        
$1.00

        
video

      

      

        
Kling 3 Motion Control 720pTransfer motion onto a character

        
kling-motion-control-720p

        
$1.32

        
video

      

      

        
Kling 3 Motion Control 1080pTransfer motion onto a character

        
kling-motion-control-1080p

        
$1.78

        
video

      

      

        
Seedance 2 720p · 10sHigh-fidelity short-form video

        
seedance-2-720p-10s

        
$3.26

        
video

      

      

        
Seedance 2 1080p · 5sHigh-fidelity short-form video

        
seedance-2-1080p-5s

        
$4.05

        
video

      

      

        
HappyHorse 720p · 10sText → video

        
happyhorse-720p-10s

        
$1.88

        
video

      

    


    

      → Full live catalogue at /api/v1/models
    

  







  

    

      

        
Crypto top-up

        
Pay in crypto. Spend in USD.

        

          Crypto invoices via CryptoBot. 0% fee, USDT 1:1 to USD, settlement in seconds. No card details, no bank approval, no chargebacks to worry about.
        


        

          

            
1

            

              Pick an amount
              $5, $25, $100 — or any custom amount from $1 to $10,000. Top up as much as you'll spend in a month.
            

          

          

            
2

            

              Pay via CryptoBot
              Get a one-time invoice link. Pay from any wallet that supports the chosen network. We watch the chain so you don't have to.
            

          

          

            
3

            

              Balance updates instantly
              CryptoBot webhook hits our endpoint, balance increments atomically. Start firing API calls in the next minute.
            

          

        

      


      

        

          
          

            
USDT

            
TRC20 · ERC20 · 1:1 USD

          

        

        

          
          

            
TON

            
Native network

          

        

        

          
          

            
BTC

            
Bitcoin mainnet

          

        

        

          
          

            
ETH

            
Ethereum mainnet

          

        

      

    

  







  

    
How it works

    
From signup to first image in 60 seconds.

    

      No sales call. No onboarding form. Three steps: sign up, top up, fire your first request.
    


    

      

        
01

        
Sign up

        
Create an account

        
Magic-link sign-in with your email. No phone, no KYC. You land in the dashboard with a $0 balance.

      

      

        
02

        
Top up + key

        
Pay & create a key

        
Top up in crypto (USDT/TON/BTC/ETH), then hit "Create key" in Settings. You'll see a wf_live_... token once — copy it now.

      

      

        
03

        
Build

        
POST your first request

        
Send a JSON body to /api/v1/generations with your model, prompt and optional image URL. The result URL comes back in the same call.

      

    

  







  

    
FAQ

    
Common questions.

    
Anything else? Ping us — link at the bottom.


    

      

        
        
No upload step. The reference must be a publicly reachable HTTPS URL — pass it in the image field. Our server fetches the bytes and forwards them to the model. The same model id (e.g. gpt-image-2-4k) handles both T2I and I2I — the router detects the reference by the field's presence.

      

      

        
        
GPT Image 2 and Nano Banana Pro are synchronous — POST returns status: "completed" with result_url in one round trip. For long video models (Kling, Seedance) you get status: "processing" plus an id; call GET /api/v1/generations?id=... to poll.

      

      

        
        
The balance is refunded atomically. You'll see a refund transaction in GET /api/v1/transactions with the original generation id. Nothing for you to do — failed requests cost zero.

      

      

        
        
No fixed per-second limits — concurrency is governed by your balance and upstream model availability. Fire as many parallel requests as you want; we automatically rotate across upstream key pools to keep latency stable.

      

      

        
        
Yes — write to us with the email tied to your account. Crypto top-ups can be returned to the originating wallet within 30 days of the top-up.

      

      

        
        
In Settings, click "Revoke" next to any key and "Create key" for a fresh one. Revocation is instant — the next request with the old key gets 401 invalid_api_key.

      

    

  







  
Start with $1.

  
No card. No subscription. Just credits.

  Create account & get API key →