[ NVIDIA ]

Nemotron 3 Ultra 550B A55B

Routed to the cheapest source. At or below list. Pay per token in USDF, with no subscription and no minimum. Streaming and the OpenAI-compatible request format are supported.

All models

NVIDIAnemotron-3-ultra-550b-a55bAvailabletextContext window: 262,144 tokens

Input

$0.50

$ / 1M tokens

Output

$2.20

$ / 1M tokens

Cached input

$0.10

$ / 1M tokens

Context window

262,144

tokens

Model ID: nemotron-3-ultra-550b-a55b
Modality: text
Unit: USD per 1M tokens
Status: Available
Endpoints: /v1/chat/completions
Context window: 262,144 tokens
Max output: 16,384 tokens
Pricing basis: Routed to the cheapest source. At or below list.

Sources

Zero retentionNo training

Make your first request

Use any OpenAI-compatible SDK. Change the base URL, keep everything else. Responses include a receipt with the exact cost.

No account: send the same request to /x402/v1/chat/completions without credentials and the gateway answers 402 with the quote. Pay per request.

curl https://api.usdf.fi/v1/chat/completions \
  -H "Authorization: Bearer $USDF_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "nemotron-3-ultra-550b-a55b", "messages": [{"role": "user", "content": "Hello"}]}'