Άμεση απάντηση
Αυτή η σελίδα εξηγεί πώς οι ομάδες χρησιμοποιούν την πύλη του NextModel που είναι συμβατή με το OpenAI. Query balance and usage over the API, and read the per-request billing headers. Προσθέτει τα πρακτικά βήματα, τις σημειώσεις ρύθμισης και τις συχνές ερωτήσεις.
Balance and usage over the API
Two authenticated GET endpoints return your account state without opening a dashboard. GET /v1/credits returns the prepaid credit balance. GET /v1/activity returns paginated usage records plus a summary; page with since (ISO timestamp), limit, and offset. Costs are returned in the account's billing currency.
curl -s https://api.nextmodel.app/v1/credits -H "Authorization: Bearer $NEXTMODEL_API_KEY"
curl -s "https://api.nextmodel.app/v1/activity?limit=20" -H "Authorization: Bearer $NEXTMODEL_API_KEY"Cost formula
A request costs input_tokens × input_price_per_1M / 1,000,000 + output_tokens × output_price_per_1M / 1,000,000. Prices per model sit on the pricing page and on each model page. The usage record returned by /v1/activity and the dashboard always shows the tokens and cost actually settled — not an estimate.
Per-request billing status
Every response carries X-NextModel-Billing-Status: settled means delivered and charged at actual tokens, rolled_back means the request failed and nothing was charged, not_charged means it was rejected before any model call. Failures never bill — see the Errors page for the full envelope.