Gemini 4 Carbon High vs Grok 4.7 Xhigh compared

Gemini 4 Carbon High leads the intelligence index 60.0 to 35.5. Grok 4.7 Xhigh costs 63% less on blended price. Benchmarks, sample bills, speed and a verdict.

Metric	Gemini 4 Carbon (High)	Grok 4.7 (Xhigh)
Intelligence Index	60.0	35.5
Input price (per 1M tokens)	$4.00	$2.00
Output price (per 1M tokens)	$20.00	$6.00
Output speed (tokens/s)	91	65
Time to first token	2.0 min	43s
Release date	2026-10-28	2026-09-21

Metric

Gemini 4 Carbon (High)

Grok 4.7 (Xhigh)

Intelligence Index

60.0

35.5

Input price (per 1M tokens)

$4.00

$2.00

Output price (per 1M tokens)

$20.00

$6.00

Output speed (tokens/s)

Time to first token

2.0 min

43s

Release date

2026-10-28

2026-09-21

Comparing Gemini 4 Carbon (High) with Grok 4.7 (Xhigh) is really a question of how much capability you are willing to give up, and what you get back for it. Their widest difference is the intelligence index, with Gemini 4 Carbon High ahead by 24.5 points (60.0 versus 35.5). This page is written automatically from catalogue numbers only: benchmark scores, list prices and measured speed.

Gemini 4 Carbon High leads on the intelligence index

Gemini 4 Carbon High comes out ahead on the intelligence index, 60.0 to 35.5. A gap this large suggests the two are built for different jobs. In relative terms, Gemini 4 Carbon High scores 69% higher.

Across the 109 active models with an intelligence score in the catalogue, Gemini 4 Carbon High ranks 1st and Grok 4.7 Xhigh ranks 38th.

The catalogue does not yet split either model's score into coding and math indexes.

Running costs

The list prices are $4.00 in and $20.00 out for Gemini 4 Carbon High, and $2.00 in and $6.00 out for Grok 4.7 Xhigh, per million tokens. Gemini 4 Carbon High costs 3.3 times as much per output token.

For a sample workload of 1 million input tokens and 200,000 output tokens, Gemini 4 Carbon High would cost $8.00 and Grok 4.7 Xhigh $3.20, a difference of $4.80. Scale it up to a month of coding-assistant traffic at 30 million input and 3 million output tokens and the bill is $180 for Gemini 4 Carbon High against $78.00 for Grok 4.7 Xhigh. On a 3:1 blend of input to output tokens, that works out to $8.00 versus $3.00 per million.

Is the price in proportion?

A blunt value measure, blended price over intelligence score, puts Gemini 4 Carbon High at $0.13 and Grok 4.7 Xhigh at $0.085 per point. So Gemini 4 Carbon High buys its higher score at a premium, while Grok 4.7 Xhigh is the value pick, paying 37% less per point.

How fast they respond

Gemini 4 Carbon High generates about 91 tokens per second and Grok 4.7 Xhigh about 65 tokens per second. That makes Gemini 4 Carbon High roughly 1.4 times as fast at writing. Time to first token is 2.0 minutes for Gemini 4 Carbon High and 43 seconds for Grok 4.7 Xhigh. On total time, Grok 4.7 Xhigh wins at ordinary lengths; Gemini 4 Carbon High's higher throughput only pays off beyond about 18,000 tokens. A first-token wait of that length suits background work better than live conversation.

For a 2,000-token response, first token plus generation comes to roughly 2.4 minutes on Gemini 4 Carbon High and 74 seconds on Grok 4.7 Xhigh.

Release timing

Grok 4.7 Xhigh came first, on September 21, 2026; Gemini 4 Carbon High followed on October 28, 2026. That is close enough to count them as the same generation.

Quick answers

Is Gemini 4 Carbon High better than Grok 4.7 Xhigh?

Neither wins everywhere: Gemini 4 Carbon High scores higher on the intelligence index, 60.0 to 35.5; Grok 4.7 Xhigh is 63% cheaper on blended price; Gemini 4 Carbon High streams output 1.4 times as fast; and Grok 4.7 Xhigh reaches its first token sooner.

Which is newer, Gemini 4 Carbon High or Grok 4.7 Xhigh?

Gemini 4 Carbon High is newer. It was released on October 28, 2026, 37 days after Grok 4.7 Xhigh (September 21, 2026).

Which is faster, Gemini 4 Carbon High or Grok 4.7 Xhigh?

Gemini 4 Carbon High generates output faster, at 91 tokens per second against 65 tokens per second. Grok 4.7 Xhigh reaches its first token sooner (43 seconds against 2.0 minutes). Counting the first-token wait, Grok 4.7 Xhigh finishes first for any reply shorter than about 18,000 tokens.

Is Grok 4.7 Xhigh cheaper than Gemini 4 Carbon High?

Grok 4.7 Xhigh is cheaper on a blended basis. Gemini 4 Carbon High lists $4.00 per million input tokens and $20.00 per million output tokens; Grok 4.7 Xhigh lists $2.00 and $6.00. For 1 million input and 200,000 output tokens that is $8.00 against $3.20.

Where do these numbers come from?

The figures are the recorded benchmark, price and speed data in Franklin AI's model catalogue. This page is written from that data automatically; neither model was tested by hand for it.

Final whistle

In one line: Gemini 4 Carbon High has more going for it here, but Grok 4.7 Xhigh is not without an argument. Pick Gemini 4 Carbon High if you need the higher overall score (60.0 against 35.5) and you generate very long outputs, beyond about 18,000 tokens. Pick Grok 4.7 Xhigh if cost matters ($6.00 against $20.00 per million output tokens) and users are waiting on the first word.

Where the numbers come from

The scores, speed and prices in this comparison come from independent third-party model evaluations that Franklin AI syncs each day, and the article was written from a snapshot of them. For the latest results, open the Gemini 4 Carbon (High) and Grok 4.7 (Xhigh) pages. The AI Benchmark methodology explains how that data is collected and shown.