Name: deepseek-ai/DeepSeek-V4-Flash
Author: deepseek-ai

Question 1

What does this deepseek-ai/DeepSeek-V4-Flash vs o3-deep-research 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-ai/DeepSeek-V4-Flash or o3-deep-research?

Accepted Answer

deepseek-ai/DeepSeek-V4-Flash lists $0.14 input and $0.28 output per 1M tokens. o3-deep-research lists $9.00 input and $36.00 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-ai/DeepSeek-V4-Flash or o3-deep-research?

Accepted Answer

deepseek-ai/DeepSeek-V4-Flash lists 1M tokens and o3-deep-research lists 200K. deepseek-ai/DeepSeek-V4-Flash therefore has the larger recorded context window, but capacity alone is not a quality score.

Question 4

Which is faster: deepseek-ai/DeepSeek-V4-Flash or o3-deep-research?

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-ai/DeepSeek-V4-Flash and o3-deep-research support?

Accepted Answer

deepseek-ai/DeepSeek-V4-Flash records text input and text output. o3-deep-research records text, image 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-ai/DeepSeek-V4-Flash or o3-deep-research?

Accepted Answer

Consider deepseek-ai/DeepSeek-V4-Flash if you need larger context or larger maximum output or a lower listed input rate or a lower listed output rate. deepseek-ai/DeepSeek-V4-Flash offers downloadable weights; o3-deep-research 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-ai/DeepSeek-V4-Flash	o3-deep-research
Provider	deepseek-ai	OpenAI
Listed pricing route	deepseek-ai	OpenAI
Model family	—	o
Accepted inputs	text	text, image
Produced outputs	text	text
Context window	1MHigher	200K
Max output	384KHigher	100K
Input price / 1M	$0.14Lower	$9.00
Output price / 1M	$0.28Lower	$36.00
Reasoning mode	Documented	Documented
Tool calling	Documented	Documented
Image input	Not documented	Documented
Audio input	Not documented	Not documented
Structured output	Not documented	Not documented
License	Not documented	Proprietary

deepseek-ai/DeepSeek-V4-Flash vs o3-deep-research

deepseek-ai/DeepSeek-V4-Flash

o3-deep-research

Key differences

Pricing, limits and capabilities

Which model should you choose?

Documentation and model profiles

Questions people ask

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