Models served by IONOS
Prices are per million tokens. Selectable routes include the 5% provider-selection markup; fixed routes show the standard model price. Availability and pricing refresh continuously; each model page shows the live provider comparison.
Using IONOS via the API
For models with provider selection, append :ionos to the model ID, set "provider": "ionos" in the request body, or send an X-Provider: ionos header. Explicit provider selection adds a 5% markup over that provider's base price; the prices in the table above already include it. Models without provider selection use the displayed model ID without a provider suffix or selection surcharge.
curl https://nano-gpt.com/api/v1/chat/completions \
-H "Authorization: Bearer $NANOGPT_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "openai/gpt-oss-120b:ionos",
"messages": [{"role": "user", "content": "Hello"}]
}'See the API documentation for provider preferences, price-aware routing, and error behavior.