Gemini 3.1 Pro Preview vs Grok 4.7

Price, context window & benchmark comparison

Gemini 3.1 Pro Preview

Google

$2.00 / $12.00

Input / Output · per 1M tokens

Grok 4.7

xAI

$1.60 / $4.80

Input / Output · per 1M tokens

Compare different models

Verdict: Grok 4.7 is 47% cheaper than Gemini 3.1 Pro Preview on a typical 3:1 input/output mix. Grok 4.7 scores higher on the Artificial Analysis Intelligence Index (46.4 vs 29.7). Gemini 3.1 Pro Preview has the larger context window (1M vs 500K).

	Gemini 3.1 Pro Preview	Grok 4.7
Input price / 1M	$2.00	$1.60
Output price / 1M	$12.00	$4.80
Blended price (3:1)	$4.50	$2.40
Cached input / 1M	$0.20	$0.40
Context window	1M	500K
Max output	66K	450K
Intelligence index	29.7	46.4
Coding index	68.8	—
Providers	—	4
Best provider uptime (30m)	—	100.0%
Vision input	Yes	Yes
Reasoning	Yes	Yes
Tool calling	Yes	Yes
Released	2026-02-19	2026-09-21
Retirement	—	—

Cost calculator

Input tokens / requestOutput tokens / requestRequests / day

FAQ

Which is cheaper, Gemini 3.1 Pro Preview or Grok 4.7?

Grok 4.7 is 47% cheaper than Gemini 3.1 Pro Preview on a typical 3:1 input/output mix.

Gemini 3.1 Pro Preview vs Grok 4.7: which has a bigger context window?

Gemini 3.1 Pro Preview: 1,048,576 tokens. Grok 4.7: 500,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Gemini 3.1 Pro Preview ≈ $10,000, Grok 4.7 ≈ $5,600.

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