OverblastBlack Forest Labs · image model
FLUX.2 Klein 4B
Black Forest Labs: FLUX.2 Klein 4B is an image model on the Overblast AI Gateway. Call it as black-forest-labs/flux.2-klein-4b with one Overblast API key, paid from your AI credits.
Prices are final: what a call costs in AI credits, in US dollars. As of 2 October 2026, from the live catalogue.
Price
| Price | $0.028 / megapixel |
|---|
What it does
| Does | Makes a picture from a prompt, Edits pictures you send |
|---|---|
| Pictures in | 0 to 4 |
| Pictures per call | 1 |
| Aspect ratios | 1:1, 4:3, 3:4, 3:2, 2:3, 16:9, 9:16, 21:9, auto |
| Formats | png, jpeg |
| Seed | Takes a seed, for repeatable results |
Where it runs
| Regions | Runs globally; it cannot be pinned to the EU or the US yet |
|---|---|
| Zero data retention | Not applicable: image calls cannot carry the requirement |
| Endpoint | POST /v1/images |
Call it
curl https://ai.overblast.app/v1/images \
-H "Authorization: Bearer $OVERBLAST_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "black-forest-labs/flux.2-klein-4b",
"prompt": "A lighthouse at dawn, watercolour"
}'All image models and their prices · How the AI Gateway works