Nvidia: nemotron-3-ultra-550b-a55b:free
nemotron-3-ultra-550b-a55b:free
Start building free
nemotron-3-ultra-550b-a55b is a high-end large language model from NVIDIA’s Nemotron 3 family, designed for demanding enterprise and research workloads. It delivers strong performance in multilingual dialogue, advanced reasoning, complex coding and data analysis, with a context window suited to long, information-dense sessions. Organizations use this model to power intelligent copilots, domain-specific assistants, content and code generation, and workflow automation across data, software, and knowledge-intensive tasks.
Pricing
Current price per 1,000,000 tokens. Every request is billed automatically from its exact usage.
Included in plans
Statistics
Live performance and usage of this model, aggregated across all users.
Detailed statistics appear here as soon as this model starts receiving requests.
API
Call this model from any OpenAI-compatible client using your API token.
curl https://apiex.cloud/api/v1/chat/completions \
-H "Authorization: Bearer $NEW_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "nemotron-3-ultra-550b-a55b:free",
"messages": [
{
"role": "user",
"content": "Explain quantum entanglement in one paragraph."
}
],
"temperature": 0.7
}'Authentication
Every request must include an Authorization: Bearer <TOKEN> header. Generate a token from your account's API Keys page — its access to models is set automatically from your active plans and redeemed codes, and you can set its rate limit and IP restrictions.
| Parameter | Type | Description |
|---|---|---|
model | string, required | This model's ID, exactly as shown above. |
messages | array, required | Conversation history as role/content objects (system, user, assistant). |
temperature | number, optional | Sampling randomness, typically 0–2. |
max_tokens | integer, optional | Upper limit on tokens generated in the reply. |
top_p | number, optional | Nucleus-sampling threshold, as an alternative to temperature. |
stream | boolean, ignored | Responses are always returned in full so the exact cost can be billed; streaming is not available. |
Replace YOUR_API_KEY with a token from your account, then see the full API reference for every parameter.
Frequently asked questions
What is nemotron-3-ultra-550b-a55b:free?
nemotron-3-ultra-550b-a55b is a high-end large language model from NVIDIA’s Nemotron 3 family, designed for demanding enterprise and research workloads. It delivers strong performance in multilingual dialogue, advanced reasoning, complex coding and data analysis, with a context window suited to long, information-dense sessions. Organizations use this model to power intelligent copilots, domain-specific assistants, content and code generation, and workflow automation across data, software, and knowledge-intensive tasks.
How much does nemotron-3-ultra-550b-a55b:free cost?
Input tokens are priced at $0,00 per 1,000,000 tokens and output tokens at $0,00 per 1,000,000 tokens. Pricing is billed automatically per request; no separate plan is required.
What is the context length of nemotron-3-ultra-550b-a55b:free?
nemotron-3-ultra-550b-a55b:free supports a context window of up to 1,000,000 tokens.
Does nemotron-3-ultra-550b-a55b:free support image input?
nemotron-3-ultra-550b-a55b:free currently accepts text input only.
Which provider is nemotron-3-ultra-550b-a55b:free from?
nemotron-3-ultra-550b-a55b:free is developed by Nvidia and made available on this gateway through our routing infrastructure.
When was nemotron-3-ultra-550b-a55b:free added to this gateway?
nemotron-3-ultra-550b-a55b:free has been available on this gateway since September 23, 2026.
Is nemotron-3-ultra-550b-a55b:free currently available?
Yes, nemotron-3-ultra-550b-a55b:free is active and can be used right now through this gateway.
