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GPT-6 Astra (medium) vs Grok 4.5 (high)

GPT-6 Astra (medium) leads on average score with 9.4 vs 9.0. GPT-6 Astra (medium) has the lower benchmark cost at $1.774 vs $2.252. GPT-6 Astra (medium) is faster at 8.08s vs 72.30s, with pass rates of 90.9% vs 86.4%.

Last updated at: 2026-09-04

Rank
#14
Total Output Tokens
19,627
Response Time (avg)
8.08s
Total Cost
$1.774
Rank
#29
Total Output Tokens
324,462
Response Time (avg)
72.30s
Total Cost
$2.252
Recommended model GPT-6 Astra (medium)

It has the best score here (9.4), while responding about 9.0x faster than Grok 4.5 (high).

Detailed comparison

Metric GPT-6 Astra GPT-6 Astra medium Release: 2026-09-04 Grok 4.5 Grok 4.5 high Release: 2026-07-08
Score 9.4 9.0
Rank #14 #29
Reliability 9.9 10.0
Consistency 9.2 8.9
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 90.9% 86.4%
Flaky tests 2 3
Total Runs 66 66
Cost per result 9.337 12.565
Total Cost $1.774 $2.252
Input Price $10.000 / 1M $2.000 / 1M
Output Price $50.000 / 1M $6.000 / 1M
Total Input Tokens 79,264 152,175
Output Tokens 4,789 5,655
Reasoning Tokens 14,838 318,807
Response Time (avg) 8.08s 72.30s
Response Time (max) 73.48s 676.83s
Response Time (total) 177.70s 1590.56s
Parameters ~2T total (~150B active) ~1.7T total (~170B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#14 GPT-6 Astra

medium
Cost
$0.231
Time
81.0s
Tokens
4,708 tok

#29 SpaceXAI: Grok 4.5

high
Cost
$0.015
Time
29.7s
Tokens
2,737 tok

Top Models by Score

Score vs Total Cost

Response Time (avg)

Score vs Response Time (avg)

Total Output Tokens

Score vs Total Output Tokens

Category Breakdown

Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-6 Astra 10.0 10.0 100.0% 0 4.95s 7,302 394 1,673
Grok 4.5 10.0 10.0 100.0% 0 155.16s 9,579 357 100,752

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