Question 1

What does this Nemotron 3 Ultra 550B A55B vs GPT-4.1 mini comparison cover?

Accepted Answer

It brings together documented inputs and outputs, token limits, deployment terms and available pricing. When both models have source-linked, verified results on a shared benchmark, those results are shown with their individual sources. The comparison is a starting point for evaluating your own workload.

Question 2

Which is cheaper: Nemotron 3 Ultra 550B A55B or GPT-4.1 mini?

Accepted Answer

Nemotron 3 Ultra 550B A55B lists $0.00 input and $0.00 output per 1M tokens. GPT-4.1 mini lists $0.40 input and $1.60 output. The cheaper workload depends on the mix of input and output. Long-context tiers, caching, batch processing and retries can change the bill.

Question 3

Which has the larger context window: Nemotron 3 Ultra 550B A55B or GPT-4.1 mini?

Accepted Answer

Nemotron 3 Ultra 550B A55B lists 1M tokens and GPT-4.1 mini lists 1.05M. GPT-4.1 mini therefore has the larger recorded context window, but capacity alone is not a quality score.

Question 4

Which is faster: Nemotron 3 Ultra 550B A55B or GPT-4.1 mini?

Accepted Answer

There is no matched speed measurement for both models with the same source, host, region and date. Test the same prompts at your expected concurrency and measure time to the first useful response as well as complete task time.

Question 5

What input and output types do Nemotron 3 Ultra 550B A55B and GPT-4.1 mini support?

Accepted Answer

Nemotron 3 Ultra 550B A55B records text input and text output. GPT-4.1 mini records text, image, pdf input and text output. “Not documented” means the current source record is incomplete; it does not prove that a modality is unsupported.

Question 6

Should I choose Nemotron 3 Ultra 550B A55B or GPT-4.1 mini?

Accepted Answer

Consider Nemotron 3 Ultra 550B A55B if you need larger maximum output or a lower listed input rate or a lower listed output rate. Consider GPT-4.1 mini if you need larger context. Nemotron 3 Ultra 550B A55B offers downloadable weights; GPT-4.1 mini is listed as a proprietary model. Compare licence terms and operating costs before choosing a deployment. Test both on the same representative examples and judge the output against your acceptance criteria. Include tool failures, retries and the time to a completed task.

Specification	Nemotron 3 Ultra 550B A55B	GPT-4.1 mini
Provider	NVIDIA	OpenAI
Listed pricing route	NVIDIA	OpenAI
Model family	nemotron	gpt-mini
Accepted inputs	text	text, image, pdf
Produced outputs	text	text
Context window	1M	1.05MHigher
Max output	128KHigher	32.77K
Input price / 1M	$0.00Lower	$0.40
Output price / 1M	$0.00Lower	$1.60
Reasoning mode	Documented	Not documented
Tool calling	Documented	Documented
Image input	Not documented	Documented
Audio input	Not documented	Not documented
Structured output	Not documented	Documented
License	Open weights	Proprietary

Nemotron 3 Ultra 550B A55B vs GPT-4.1 mini

Nemotron 3 Ultra 550B A55B

GPT-4.1 mini

Key differences

Pricing, limits and capabilities

Which model should you choose?

Documentation and model profiles

Questions people ask

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