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Claude Opus 5 vs xAI: Grok 4.5

Grok 4.5 (high) leads on average score with 8.9 vs 8.6. Claude Opus 5 (low) has the lower benchmark cost at $1.121 vs $1.707. Claude Opus 5 (low) is faster at 6.99s vs 76.50s, with pass rates of 80.3% vs 83.3%.

Recommended modelClaude Opus 5 (low)Its score stays close to the best score here (8.6 vs 8.9), while costing about 1.5x less than Grok 4.5 (high).

Last updated at: 2026-07-25

Metric Claude Opus 5 Claude Opus 5 low Release: 2026-07-25 Grok 4.5 Grok 4.5 high Release: 2026-07-08
Score 8.6 8.9
Rank #23 #17
Reliability 10.0 10.0
Consistency 9.3 9.2
Tests Correct
Attempt pass rate 80.3% 83.3%
Flaky tests 2 2
Total Runs 66 66
Cost per result 6.593 10.041
Total Cost $1.121 $1.707
Input Price $5.000 / 1M $2.000 / 1M
Output Price $25.000 / 1M $6.000 / 1M
Total Input Tokens 134,773 151,562
Output Tokens 14,123 5,655
Reasoning Tokens 3,896 247,540
Response Time (avg) 6.99s 76.50s
Response Time (max) 30.67s 676.83s
Response Time (total) 153.73s 1683.07s

Hamster playing table tennis

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

#23 Claude Opus 5

low
Cost
$0.062
Time
30.2s
Tokens
2,615 tok

#17 xAI: 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
Claude Opus 5 7.8 7.4 77.8% 1 6.70s 10,590 2,442 760
Grok 4.5 10.0 10.0 100.0% 0 155.16s 9,579 357 100,752

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