DeepSeek V3.1 Terminus vs Gemini 4 Carbon

Price, context window & benchmark comparison

DeepSeek V3.1 Terminus

DeepSeek

$0.27 / $1.00

Input / Output · per 1M tokens

Gemini 4 Carbon

Google

$2.00 / $10.00

Input / Output · per 1M tokens

Compare different models

Verdict: DeepSeek V3.1 Terminus is 8.8× cheaper than Gemini 4 Carbon on a typical 3:1 input/output mix. Gemini 4 Carbon has the larger context window (1M vs 164K).

	DeepSeek V3.1 Terminus	Gemini 4 Carbon
Input price / 1M	$0.27	$2.00
Output price / 1M	$1.00	$10.00
Blended price (3:1)	$0.45	$4.00
Cached input / 1M	—	$0.10
Context window	164K	1M
Max output	147K	944K
Intelligence index	—	60
Coding index	43.5	—
Providers	—	7
Best provider uptime (30m)	—	100.0%
Vision input	No	Yes
Reasoning	Yes	Yes
Tool calling	Yes	Yes
Released	2025-09-22	2026-11-10
Retirement	—	—

Cost calculator

Input tokens / requestOutput tokens / requestRequests / day

FAQ

Which is cheaper, DeepSeek V3.1 Terminus or Gemini 4 Carbon?

DeepSeek V3.1 Terminus is 8.8× cheaper than Gemini 4 Carbon on a typical 3:1 input/output mix.

DeepSeek V3.1 Terminus vs Gemini 4 Carbon: which has a bigger context window?

DeepSeek V3.1 Terminus: 163,840 tokens. Gemini 4 Carbon: 1,048,576 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: DeepSeek V3.1 Terminus ≈ $1,040, Gemini 4 Carbon ≈ $9,000.

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