FLUX.2 Pro API (flux-2 / flux2) — prompts guide with published pricing

1MP $0.024; 2MP $0.036; 3MP $0.048 — flat per-unit billing through the OpenAI-compatible APIMart gateway, $1 minimum top-up.

Live pricing · Get an API key

Everything here refers to flux-2 — also written flux2 or flux 2.

curl --request POST --url https://api.apimart.ai/v1/images/generations \
  --header "Authorization: Bearer $APIMART_API_KEY" --header 'Content-Type: application/json' \
  --data '{"model":"flux-2-pro","prompt":"a modern cliffside villa at dusk","size":"16:9","n":1}'

Submit, keep the task_id, poll GET /v1/tasks/{id} until completed; the response carries the URL and the exact amount charged.

Documents access through APIMart, a third-party API gateway; not affiliated with the model vendor.