Last refreshed 2026-10-17. Next refresh: weekly.
Why use Nemotron 3 Ultra on DeepInfra?
DeepInfra offers Nemotron 3 Ultra with pay-as-you-go pricing at $0.50/1M input tokens. DeepInfra is a cloud inference platform offering cost-effective access to open-source AI models.
Compare Nemotron 3 Ultra across 8 providers to find the best fit for your use caseInput / 1M
$0.50
Output / 1M
$2.20
Cache
read $0.10 / 5m $0.625 / 1h $1.00
Batch
Not sourced
Setup recipe
Python + curlInstall
pip install openaiAuth
export DEEPINFRA_API_KEY=...Call
import os
from openai import OpenAI
client = OpenAI(
api_key=os.environ["DEEPINFRA_API_KEY"],Model ID
nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55BRequest example
import os
from openai import OpenAI
client = OpenAI(
api_key=os.environ["DEEPINFRA_API_KEY"],
base_url="https://api.deepinfra.com/v1/openai"
)
response = client.chat.completions.create(
model="nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B",
messages=[{"role": "user", "content": "Hello"}]
)
print(response.choices[0].message.content)Gotchas
- Use provider model ID "nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B", not the LLMReference slug "nemotron-3-ultra".
- DeepInfra uses "organization/model-name" format, e.g. "meta-llama/Meta-Llama-3-8B-Instruct" or "mistralai/Mistral-7B-Instruct-v0.3". See the DeepInfra model catalog for exact IDs.
- The examples expect DEEPINFRA_API_KEY; rename it only if your application config maps the new variable.
Compare Nemotron 3 Ultra Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| OpenRouter | — | — |
| DeepInfra | $0.50 | $2.20 |
| Baseten API | $0.60 | $2.40 |
| Venice AI | $0.63 | $3.13 |
| Fireworks AI | $0.60 | $2.40 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $0.50 |
| Output tokens | $2.20 |
Capabilities
ReasoningJSON / Tool use
About Nemotron 3 Ultra
NVIDIA's open frontier-reasoning model (550B total / 55B active MoE, hybrid Transformer-Mamba). Highest Artificial Analysis Intelligence Index for any US open model (score: 48). 300+ tokens/second. 1M-token context. Announced at Computex 2026. Pricing: ~$0.60/$2.60 per 1M tokens (provider median); free tier on some providers.
Get Started
Model Specs
Released2026-06-04
Parameters550B
Context1M
ArchitectureMixture of Experts