GPT-6 Astra Max vs Grok 4.7 Xhigh: which scores higher?

GPT-6 Astra Max leads the intelligence index 56.9 to 35.5. Grok 4.7 Xhigh costs 85% less on blended price. See token costs, speed and which to pick.

Metric	GPT-6 Astra (Max)	Grok 4.7 (Xhigh)
Intelligence Index	56.9	35.5
Input price (per 1M tokens)	$10.00	$2.00
Output price (per 1M tokens)	$50.00	$6.00
Output speed (tokens/s)	46	65
Time to first token	6.8 min	43s
Release date	2026-09-03	2026-09-21

Metric

GPT-6 Astra (Max)

Grok 4.7 (Xhigh)

Intelligence Index

56.9

35.5

Input price (per 1M tokens)

$10.00

$2.00

Output price (per 1M tokens)

$50.00

$6.00

Output speed (tokens/s)

Time to first token

6.8 min

43s

Release date

2026-09-03

2026-09-21

On paper this is a mismatch: GPT-6 Astra (Max) and Grok 4.7 (Xhigh) are separated by 21.4 points on the intelligence index. GPT-6 Astra Max leads the intelligence index 56.9 to 35.5, a gap of 21.4 points. No hands-on testing went into this write-up; it summarises the recorded benchmark, price and speed data for both models.

The headline benchmark

The catalogue puts GPT-6 Astra Max at 56.9 and Grok 4.7 Xhigh at 35.5 on its intelligence index. A gap this large suggests the two are built for different jobs. Put another way, Grok 4.7 Xhigh would need 60% more on this index to draw level.

For context, that places GPT-6 Astra Max 5th and Grok 4.7 Xhigh 38th out of 109 scored models still on offer.

There are no coding or math index scores for either model in the catalogue, which keeps this comparison at the aggregate level.

Grok 4.7 Xhigh is the faster writer

GPT-6 Astra Max generates about 46 tokens per second and Grok 4.7 Xhigh about 65 tokens per second. Grok 4.7 Xhigh is ahead by 41% on throughput. The wait for the first token averages 6.8 minutes on GPT-6 Astra Max against 43 seconds on Grok 4.7 Xhigh. Grok 4.7 Xhigh gets to its first token 9.5 times as fast. Waits that long are felt on every chat-style request, though they matter less for batch jobs.

For a 400-token response, first token plus generation comes to roughly 6.9 minutes on GPT-6 Astra Max and 49 seconds on Grok 4.7 Xhigh.

Price per token

Per million tokens, GPT-6 Astra Max charges $10.00 for input and $50.00 for output, while Grok 4.7 Xhigh charges $2.00 and $6.00. GPT-6 Astra Max costs 8.3 times as much per output token.

For a sample workload of 1 million input tokens and 200,000 output tokens, GPT-6 Astra Max would cost $20.00 and Grok 4.7 Xhigh $3.20, a difference of $16.80. For extracting fields from 20,000 pages of 1,500 tokens into 150-token records, Grok 4.7 Xhigh would come in 83% lower: $450 for GPT-6 Astra Max against $78.00 for Grok 4.7 Xhigh.

Score per dollar

Per point of intelligence index, GPT-6 Astra Max costs $0.35 of blended price per million tokens and Grok 4.7 Xhigh $0.085. Grok 4.7 Xhigh delivers each index point for 76% less; whether GPT-6 Astra Max's extra 21.4 points are worth the premium depends on how often your tasks need them.

When they came out

GPT-6 Astra Max came first, on September 3, 2026; Grok 4.7 Xhigh followed on September 21, 2026. They are effectively contemporaries.

Common questions about GPT-6 Astra Max and Grok 4.7 Xhigh

Is Grok 4.7 Xhigh better than GPT-6 Astra Max?

It depends on what you need: GPT-6 Astra Max scores higher on the intelligence index, 56.9 to 35.5; Grok 4.7 Xhigh is 85% cheaper on blended price; and Grok 4.7 Xhigh streams output 1.4 times as fast.

Was this comparison tested by hand?

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.

Are GPT-6 Astra Max and Grok 4.7 Xhigh from the same company?

GPT-6 Astra Max is made by OpenAI and Grok 4.7 Xhigh by SpaceXAI. GPT-6 Astra Max was released on September 3, 2026 and Grok 4.7 Xhigh on September 21, 2026.

Which is faster, GPT-6 Astra Max or Grok 4.7 Xhigh?

Grok 4.7 Xhigh generates output faster, at 65 tokens per second against 46 tokens per second. Grok 4.7 Xhigh reaches its first token sooner (43 seconds against 6.8 minutes).

Which is cheaper, GPT-6 Astra Max or Grok 4.7 Xhigh?

Grok 4.7 Xhigh is cheaper on a blended basis. GPT-6 Astra Max lists $10.00 per million input tokens and $50.00 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 $20.00 against $3.20.

Final whistle

Bottom line: GPT-6 Astra Max has more going for it here, but Grok 4.7 Xhigh is not without an argument. Pick Grok 4.7 Xhigh if cost matters ($6.00 against $50.00 per million output tokens) and users are waiting on the first word. Pick GPT-6 Astra Max if you need the higher overall score (56.9 against 35.5).

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 GPT-6 Astra (Max) and Grok 4.7 (Xhigh) pages. The AI Benchmark methodology explains how that data is collected and shown.