DeepSeek V4 Flash 0731 vs Phi 4

Price, context window & benchmark comparison

DeepSeek V4 Flash 0731

DeepSeek

$0.03 / $0.32

Input / Output · per 1M tokens

Phi 4

Microsoft

$0.07 / $0.14

Input / Output · per 1M tokens

Compare different models

Verdict: Phi 4 is 15% cheaper than DeepSeek V4 Flash 0731 on a typical 3:1 input/output mix. DeepSeek V4 Flash 0731 has the larger context window (1.3M vs 16K).

	DeepSeek V4 Flash 0731	Phi 4
Input price / 1M	$0.03	$0.07
Output price / 1M	$0.32	$0.14
Blended price (3:1)	$0.10	$0.0875
Cached input / 1M	$0.016	—
Context window	1.3M	16K
Max output	944K	15K
Intelligence index	34.3	—
Coding index	69.1	—
Providers	30	—
Best provider uptime (30m)	100.0%	—
Vision input	No	No
Reasoning	Yes	No
Tool calling	Yes	No
Released	2026-07-31	2025-01-10
Retirement	—	—

Cost calculator

Input tokens / requestOutput tokens / requestRequests / day

FAQ

Which is cheaper, DeepSeek V4 Flash 0731 or Phi 4?

Phi 4 is 15% cheaper than DeepSeek V4 Flash 0731 on a typical 3:1 input/output mix.

DeepSeek V4 Flash 0731 vs Phi 4: which has a bigger context window?

DeepSeek V4 Flash 0731: 1,310,720 tokens. Phi 4: 16,384 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: DeepSeek V4 Flash 0731 ≈ $220.00, Phi 4 ≈ $210.00.

DeepSeek V4 Flash 0731 vs Phi 4