one key, published unit prices — image2.5 from $0.0085/image, video from $0.01056/second, LLM input from $0.0228 per million tokens.
Model page · Live pricing · Get an API key
Everything on this page refers to gateway — also written ai api gateway, gateway or gateway — served through the OpenAI-compatible APIMart gateway at https://api.apimart.ai/v1.
| Tier | Price |
|---|---|
GPT Image 2.5 (1K) |
$0.0085 |
Seedance 2.0 Mini (480P, per sec) |
$0.0106 |
Qwen3.7 Flash (per M input) |
$0.0229 |
Billed per unit, pay as you go, $1 minimum top-up, no subscription and no free quota. Every task response returns cost / credits_cost so the charge can be checked per call.
| Volume | Cost |
|---|---|
| 100 | $2.2857 |
| 1000 | $22.8568 |
Linear at the observed rate, no volume discount assumed.
export APIMART_API_KEY="<token>"
curl --request POST --url https://api.apimart.ai/v1/images/generations \
--header "Authorization: Bearer $APIMART_API_KEY" --header 'Content-Type: application/json' \
--data '{"model":"gateway","prompt":"a modern cliffside villa at dusk, slow camera push","size":"16:9","n":1}'Submit, keep the task_id, then poll GET /v1/tasks/{id} until completed. The response carries the image/video URL and the exact amount charged.
| Symptom | Cause | Fix |
|---|---|---|
401 |
key missing or truncated | re-copy from the console; header is Authorization: Bearer $APIMART_API_KEY |
| no balance | account has no credit | top up from $1 — there is no free tier on any model here |
429 |
too many concurrent calls on one key | back off, retry with the same Idempotency-Key |
model not found |
wrong id or wrong tier field | copy the exact id gateway (alias ai api gateway) from the table above |
task failed |
prompt filtered, or a reference URL expired | resubmit with a new Idempotency-Key |
How is it billed? Per unit of usage; published rates above. Which resolutions? GPT Image 2.5 (1K), Seedance 2.0 Mini (480P, per sec), Qwen3.7 Flash (per M input). Is this a relay? Yes — APIMart is a third-party gateway. Same OpenAI-compatible request shape, different billing and settlement from the vendor's direct API.
This repository documents access through APIMart, a third-party API gateway, and is not affiliated with the model vendor. Prices are the dated snapshot above; the platform console is authoritative for billing.