DeepSeek V4 Flash 0731 vs Seed 2.1 Turbo

Price, context window & benchmark comparison

DeepSeek V4 Flash 0731

DeepSeek

$0.03 / $0.32

Input / Output · per 1M tokens

Seed 2.1 Turbo

ByteDance Seed

$0.50 / $2.50

Input / Output · per 1M tokens

Compare different models

Verdict: DeepSeek V4 Flash 0731 is 9.8× cheaper than Seed 2.1 Turbo on a typical 3:1 input/output mix. DeepSeek V4 Flash 0731 has the larger context window (1.3M vs 262K).

	DeepSeek V4 Flash 0731	Seed 2.1 Turbo
Input price / 1M	$0.03	$0.50
Output price / 1M	$0.32	$2.50
Blended price (3:1)	$0.10	$1.00
Cached input / 1M	$0.016	—
Context window	1.3M	262K
Max output	944K	236K
Intelligence index	34.3	—
Coding index	69.1	—
Providers	30	1
Best provider uptime (30m)	100.0%	100.0%
Vision input	No	Yes
Reasoning	Yes	Yes
Tool calling	Yes	Yes
Released	2026-07-31	2026-08-12
Retirement	—	—

Cost calculator

Input tokens / requestOutput tokens / requestRequests / day

FAQ

Which is cheaper, DeepSeek V4 Flash 0731 or Seed 2.1 Turbo?

DeepSeek V4 Flash 0731 is 9.8× cheaper than Seed 2.1 Turbo on a typical 3:1 input/output mix.

DeepSeek V4 Flash 0731 vs Seed 2.1 Turbo: which has a bigger context window?

DeepSeek V4 Flash 0731: 1,310,720 tokens. Seed 2.1 Turbo: 262,144 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: DeepSeek V4 Flash 0731 ≈ $220.00, Seed 2.1 Turbo ≈ $2,250.

More comparisons