Image editing API · Available
Instruction-based editing through the OpenAI-compatible /v1/images/edits endpoint, served from hardware AxForge owns in Sweden. Send an image and a sentence (swap the jacket, replace the sky, remove the crowd) and get the edit back in seconds. Zero prompt retention.
Specifications
| Model | FLUX.2 Klein 4B: instruction-based editing with multi-reference support |
|---|---|
| API model name | flux2-klein-4b |
| Endpoint | POST /v1/images/edits |
| Input | Source image(s) (base64 or data URL) + a plain-language instruction |
| Typical edits | Clothing and color swaps, sky and background replacement, object removal or addition, product-shot restyling |
| Text in images | A generation job: regenerate with ERNIE Image Turbo, built for dense, legible in-image text |
| License | Apache 2.0 (open weights, 4B variant) |
| Quantization | fp8 |
| Hardware | NVIDIA DGX Spark (GB10, 128 GB unified memory), owned and operated by AxForge |
| Region | Stockholm, Sweden (eu-se-1), pinned on the key; region and machine shown in the console |
| Pricing | €0.06 / edit (launch pricing) |
Picked in a same-source, same-instruction bake-off on our own hardware: near-parity with the previous edit model on visual edits, at three times the speed and a third of the memory. Image generation runs on ERNIE Image Turbo at €0.05 per image.
Performance
Edits are seconds-scale: a 4-step distilled model, faster than a full generation. Treat the call as asynchronous with a sensible client timeout. We haven't published our own tuned timing numbers yet.
Quickstart
# your API key, from API Keys
export AXFORGE_API_KEY="YOUR_KEY"
# photo.png → edited.png
IMG=$(base64 < photo.png | tr -d '\n')
printf '{"model":"flux2-klein-4b","prompt":"replace the grey sky with a clear summer evening","image":"data:image/png;base64,%s"}' "$IMG" > edit.json
curl --max-time 300 https://api.axforge.ai/v1/images/edits \
-H "Authorization: Bearer $AXFORGE_API_KEY" \
-H "Content-Type: application/json" \
-d @edit.json \
| sed -n 's/.*"b64_json":"\([^"]*\)".*/\1/p' | base64 -d > edited.png# your API key, from API Keys
$env:AXFORGE_API_KEY = "YOUR_KEY"
# photo.png → edited.png
$img = [Convert]::ToBase64String([IO.File]::ReadAllBytes("$PWD\photo.png"))
$call = @{
Method = "Post"
Uri = "https://api.axforge.ai/v1/images/edits"
Headers = @{ Authorization = "Bearer $env:AXFORGE_API_KEY" }
ContentType = "application/json"
Body = @{ model = "flux2-klein-4b"; prompt = "replace the grey sky with a clear summer evening"; image = "data:image/png;base64,$img" } | ConvertTo-Json
TimeoutSec = 300
}
$r = Invoke-RestMethod @call
[IO.File]::WriteAllBytes("$PWD\edited.png", [Convert]::FromBase64String($r.data[0].b64_json))Data & privacy
Images and prompts are processed in memory in Sweden, not written to disk, not logged, not retained, and never used to train anything. We keep only request metadata (token counts, timestamps, status) for billing and operations. The full policy is at axforge.ai/privacy.
FAQ
The classic photoshop-style requests, from a plain-language instruction: swap clothes or colors on a person, replace a sky or background, remove or add objects, restyle a product shot. Send the source image plus one sentence. Multiple reference images are supported.
Text belongs to the generation model: regenerate with ERNIE Image Turbo, which is built for dense, legible in-image text. Keep Klein for the visual work: objects, backgrounds, clothing, style.
Edits are seconds-scale: a 4-step distilled model, faster than a full generation. We haven't published our own tuned timing numbers yet.
€0.06 per edit (launch pricing). No subscription, no minimum. For committed volume, talk to an engineer.
The 4B model we serve is Apache 2.0, fully open for commercial use. The larger 9B variant carries a non-commercial license; we do not use it.
No. Images and prompts are processed in memory in Sweden, never persisted or used for training. See the privacy policy. This makes the API a fit for GDPR-sensitive workloads.
Explore