DeepSeek V4 Flash 0731 vs o3 Mini

Price, context window & benchmark comparison

DeepSeek V4 Flash 0731

DeepSeek

$0.03 / $0.32

Input / Output · per 1M tokens

o3 Mini

OpenAI

$1.10 / $4.40

Input / Output · per 1M tokens

Compare different models

Verdict: DeepSeek V4 Flash 0731 is 18.8× cheaper than o3 Mini on a typical 3:1 input/output mix. DeepSeek V4 Flash 0731 has the larger context window (1.3M vs 200K).

	DeepSeek V4 Flash 0731	o3 Mini
Input price / 1M	$0.03	$1.10
Output price / 1M	$0.32	$4.40
Blended price (3:1)	$0.10	$1.93
Cached input / 1M	$0.016	$0.55
Context window	1.3M	200K
Max output	944K	100K
Intelligence index	34.3	—
Coding index	69.1	—
Providers	30	—
Best provider uptime (30m)	100.0%	—
Vision input	No	No
Reasoning	Yes	Yes
Tool calling	Yes	Yes
Released	2026-07-31	2025-01-31
Retirement	—	—

Cost calculator

Input tokens / requestOutput tokens / requestRequests / day

FAQ

Which is cheaper, DeepSeek V4 Flash 0731 or o3 Mini?

DeepSeek V4 Flash 0731 is 18.8× cheaper than o3 Mini on a typical 3:1 input/output mix.

DeepSeek V4 Flash 0731 vs o3 Mini: which has a bigger context window?

DeepSeek V4 Flash 0731: 1,310,720 tokens. o3 Mini: 200,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: DeepSeek V4 Flash 0731 ≈ $220.00, o3 Mini ≈ $4,400.

DeepSeek V4 Flash 0731 vs o3 Mini