DeepSeek V4 Pro vs DeepSeek V4 Flash

DeepSeek V4 Pro versus DeepSeek V4 Flash specifications and price.
metric	DeepSeek V4 Pro	DeepSeek V4 Flash
Input / 1M	$0.43	$0.14
Output / 1M	$0.87	$0.28
Context	1.0M	1.0M
Cost @ typical workload	$217/mo	$70.00/mo
Modality	Text only	Text only
Price source	list	first-party
Provider	DeepSeek	DeepSeek

Which should you pick?

On a typical workload, DeepSeek V4 Flash costs $70.00/mo against DeepSeek V4 Pro's $217/mo — roughly 3.1× cheaper. But the ranking depends on your output-to-input ratio: output is the pricier direction for both, so an output-heavy job (code generation, long answers) widens the gap while an input-heavy one (summarization, retrieval) narrows it. Both share the same context window, so that's not a deciding factor here.

These are list and routed market prices, not measured outcomes. Two models at the same rate can still cost different amounts to finish the same task, because verbose or reasoning-heavy models emit more tokens. That gap is exactly what measured cost-per-task captures.

Frequently asked questions

Is DeepSeek V4 Pro or DeepSeek V4 Flash cheaper?

For a typical workload (1,500 input + 500 output tokens × 200,000 requests/month), DeepSeek V4 Flash costs $70.00/mo versus $217/mo for DeepSeek V4 Pro — about 3.1× less. Because output is priced higher than input, the winner can flip if your workload writes much more or less than this; check your own numbers in the calculator.

What's the main difference between DeepSeek V4 Pro and DeepSeek V4 Flash?

On price, DeepSeek V4 Pro is $0.43/$0.87 per 1M (in/out) and DeepSeek V4 Flash is $0.14/$0.28. Both carry the same context window.

More comparisons

DeepSeek V4 Pro and DeepSeek V4 Flash — full specs and price history.
API cost calculator — compare on your own workload.
All comparisons — the full head-to-head index.