# 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.

## Specifications

| | NVIDIA Nemotron 3 Ultra 550B A55B NVFP4 | Qwen 3.5 |
| --- | --- | --- |
| Lab | NVIDIA | Qwen |
| Access | API only | Open weights |
| Context window | 512K tokens | 256K tokens |
| List price, input | $0.60 / M tokens | $0.60 / M tokens |
| List price, output | $3.60 / M tokens | $3.60 / M tokens |
| Cached input | $0.20 / M tokens | $0.35 / M tokens |
| License | Proprietary API | Apache 2.0 |
| Fine-tunable | No | Yes |

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.

## Choose NVIDIA Nemotron 3 Ultra 550B A55B NVFP4 for

- The longer context window (512K vs 256K tokens)

## Choose Qwen 3.5 for

- Multilingual support agents
- Translation-adjacent workflows
- Fine-tuning under Apache 2.0

## 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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[HTML page](https://allocate.network/compare/nvidia-nemotron-3-ultra-550b-a55b-vs-qwen-3-5) · [NVIDIA Nemotron 3 Ultra 550B A55B NVFP4](https://allocate.network/models/nvidia-nemotron-3-ultra-550b-a55b.md) · [Qwen 3.5](https://allocate.network/models/qwen-3-5.md) · [Machine-readable catalog](https://allocate.network/catalog.json)