Name: DeepSeek V4 Pro
Author: DeepSeek

Question 1

What does this DeepSeek V4 Pro vs Gemini 3 Flash Preview 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: DeepSeek V4 Pro or Gemini 3 Flash Preview?

Accepted Answer

DeepSeek V4 Pro lists $0.435 input and $0.87 output per 1M tokens. Gemini 3 Flash Preview lists $0.50 input and $3.00 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: DeepSeek V4 Pro or Gemini 3 Flash Preview?

Accepted Answer

DeepSeek V4 Pro lists 1M tokens and Gemini 3 Flash Preview lists 1.05M. Gemini 3 Flash Preview therefore has the larger recorded context window, but capacity alone is not a quality score.

Question 4

Which is faster: DeepSeek V4 Pro or Gemini 3 Flash Preview?

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 DeepSeek V4 Pro and Gemini 3 Flash Preview support?

Accepted Answer

DeepSeek V4 Pro records text input and text output. Gemini 3 Flash Preview records text, image, video, audio, 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 DeepSeek V4 Pro or Gemini 3 Flash Preview?

Accepted Answer

Consider DeepSeek V4 Pro if you need larger maximum output or a lower listed input rate or a lower listed output rate. Consider Gemini 3 Flash Preview if you need larger context. DeepSeek V4 Pro offers downloadable weights; Gemini 3 Flash Preview 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	DeepSeek V4 Pro	Gemini 3 Flash Preview
Provider	DeepSeek	Google
Listed pricing route	DeepSeek	Google
Model family	deepseek-thinking	gemini-flash
Accepted inputs	text	text, image, video, audio, pdf
Produced outputs	text	text
Context window	1M	1.05MHigher
Max output	384KHigher	65.54K
Input price / 1M	$0.435Lower	$0.50
Output price / 1M	$0.87Lower	$3.00
Reasoning mode	Documented	Documented
Tool calling	Documented	Documented
Image input	Not documented	Documented
Audio input	Not documented	Documented
Structured output	Documented	Documented
License	Open weights	Proprietary

DeepSeek V4 Pro vs Gemini 3 Flash Preview

DeepSeek V4 Pro

Gemini 3 Flash Preview

Key differences

Pricing, limits and capabilities

Which model should you choose?

Documentation and model profiles

Questions people ask

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