o4-mini vs DeepSeek V4 Flash

Side-by-side comparison across metrics, pricing, and overall score — every value traced to a source.

Verdict: DeepSeek V4 Flash ranks highest overall (#1) with a score of 70.9.

The best choice still depends on which metrics matter for your workload — per-metric winners are marked below.

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What the numbers hide

Computed from the published values below — no estimates, no generated claims.

Dominated option

DeepSeek V4 Flash is at least as good as o4-mini on all 5 scored metrics both report — there is no scored scenario where o4-mini is the better pick here.

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Metrico4-miniOpenAIDeepSeek V4 FlashDeepSeek
Overall OptiSift Score20.4#1770.9#1
Input Price$1.1$0.14
Output Price$4.4$0.28
Cache Read Price$0.28$0
Context Window200K1M
Max Output Tokens100K384K
Tool CallingYesYes
Extended ReasoningYesYes

About these models

#17o4-mini

OpenAI

20.4

o4-mini is OpenAI's reasoning-capable model: $1.10/$4.40 per 1M input/output tokens, 200K token context window.

#1DeepSeek V4 Flash

DeepSeek

70.9

DeepSeek V4 Flash is DeepSeek's reasoning-capable model: $0.14/$0.28 per 1M input/output tokens, 1M token context window.

Explore further

o4-mini vs DeepSeek V4 Flash — Side-by-Side Comparison | OptiSift