Add :nitro to a model to sort its providers by speed, priority tiers included.
:nitro asks for speed. It sorts the model's providers by throughput — tokens per second — and lets a provider's priority tier compete too.
curl https://opendunes.com/v1/chat/completions \
-H "Authorization: Bearer $OPENDUNES_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "openai/gpt-5.6-luna:nitro",
"messages": [{ "role": "user", "content": "Reply to this customer in one line: where is my parcel?" }]
}'provider.sort: "throughput".The model is the same model — same weights, same context. Only the provider that serves it changes.
You pay the endpoint that served, in DA. A priority endpoint charges its priority price; a standard one, its standard price. For the speed sort without priority tiers, set provider.sort: "throughput" instead.
Among :nitro, :floor and :exacto, the last one named wins.