Gemini 3.1 Pro Preview Custom Tools vs Grok 4.7

Price, context window & benchmark comparison

Gemini 3.1 Pro Preview Custom Tools

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 Custom Tools on a typical 3:1 input/output mix. Gemini 3.1 Pro Preview Custom Tools has the larger context window (1M vs 500K).

	Gemini 3.1 Pro Preview Custom Tools	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	—	46.4
Coding index	—	—
Providers	—	4
Best provider uptime (30m)	—	100.0%
Vision input	Yes	Yes
Reasoning	Yes	Yes
Tool calling	Yes	Yes
Released	2026-02-25	2026-09-21
Retirement	—	—

Cost calculator

Input tokens / requestOutput tokens / requestRequests / day

FAQ

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

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

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

Gemini 3.1 Pro Preview Custom Tools: 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 Custom Tools ≈ $10,000, Grok 4.7 ≈ $5,600.

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