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NVIDIA Nemotron 3 Ultra 550B A55B NVFP4 vs Qwen 3.5

On provider list prices, NVIDIA Nemotron 3 Ultra 550B A55B NVFP4 costs $0.60 per million input tokens against $0.60 for Qwen 3.5: effectively level. Output is $3.60 against $3.60. On Allocate both bill at list plus the 7% transaction fee.

NVIDIA Nemotron 3 Ultra 550B A55B NVFP4 Qwen 3.5
LabNVIDIAQwen
AccessAPI onlyOpen weights
Context window512K tokens256K tokens
List price, input$0.6 / M tokens$0.6 / M tokens
List price, output$3.6 / M tokens$3.6 / M tokens
Cached input$0.2 / M tokens$0.35 / M tokens
LicenseProprietary APIApache 2.0
Fine-tunableNoYes

Specifications and provider list prices from the Allocate catalog, checked 2026-07-08. Billed price is list plus the 7% transaction fee.

What the numbers say

Take 1,000,000 requests a month at 1,200 input and 350 output tokens each. That workload costs $1,980 a month on NVIDIA Nemotron 3 Ultra 550B A55B NVFP4 and $1,980 on Qwen 3.5 at list: a gap of $0.

NVIDIA Nemotron 3 Ultra 550B A55B NVFP4 reads 512K tokens per request against 256K for Qwen 3.5, 2.0x the window. That decides which one can take whole documents without splitting them.

NVIDIA Nemotron 3 Ultra 550B A55B NVFP4$0.60$3.60
Qwen 3.5$0.60$3.60
InputOutput

Choose NVIDIA Nemotron 3 Ultra 550B A55B NVFP4 for

  • The longer context window (512K vs 256K tokens)
NVIDIA Nemotron 3 Ultra 550B A55B NVFP4 details

Choose Qwen 3.5 for

  • Multilingual support agents
  • Translation-adjacent workflows
  • Fine-tuning under Apache 2.0
Qwen 3.5 details

Common questions

Which is cheaper, NVIDIA Nemotron 3 Ultra 550B A55B NVFP4 or Qwen 3.5?

NVIDIA Nemotron 3 Ultra 550B A55B NVFP4, on this workload shape. At list prices it is $0.60/$3.60 per million tokens in and out against $0.60/$3.60 for Qwen 3.5. Billed on Allocate: $0.64/$3.85 against $0.64/$3.85, list plus 7%.

Which has the bigger context window?

NVIDIA Nemotron 3 Ultra 550B A55B NVFP4: 512,288 tokens (512K) against 262,144 (256K) for Qwen 3.5.

Can I fine-tune NVIDIA Nemotron 3 Ultra 550B A55B NVFP4 or Qwen 3.5?

Qwen 3.5 publishes open weights (Apache 2.0) and can be fine-tuned on your own data. NVIDIA Nemotron 3 Ultra 550B A55B NVFP4 is a closed model served over API; its weights are not available.

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Run the numbers on your workload

LLM price comparisonAgent cost calculatorNVIDIA Nemotron 3 Ultra 550B A55B NVFP4Qwen 3.5

Or don’t choose. On Allocate a route name is the contract: point yours at one model today, swap to the other tomorrow, and compare them on your live traffic with per-token metering.

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