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Claude Opus 5 vs xAI: Grok 4.5

Claude Opus 5 (low) leads on average score with 8.6 vs 8.4. Grok 4.5 (low) has the lower benchmark cost at $0.935 vs $1.121. Claude Opus 5 (low) is faster at 6.99s vs 15.56s, with pass rates of 80.3% vs 75.8%.

Recommended modelClaude Opus 5 (low)It has the best score here (8.6), while responding about 2.2x faster than Grok 4.5 (low).

Last updated at: 2026-07-25

Metric Claude Opus 5 Claude Opus 5 low Release: 2026-07-25 Grok 4.5 Grok 4.5 low Release: 2026-07-08
Score 8.6 8.4
Rank #23 #26
Reliability 10.0 10.0
Consistency 9.3 9.7
Tests Correct
Attempt pass rate 80.3% 75.8%
Flaky tests 2 1
Total Runs 66 66
Cost per result 6.593 5.844
Total Cost $1.121 $0.935
Input Price $5.000 / 1M $2.000 / 1M
Output Price $25.000 / 1M $6.000 / 1M
Total Input Tokens 134,773 125,596
Output Tokens 14,123 7,505
Reasoning Tokens 3,896 106,446
Response Time (avg) 6.99s 15.56s
Response Time (max) 30.67s 205.28s
Response Time (total) 153.73s 342.32s

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

#26 xAI: Grok 4.5

low
Cost
$0.011
Time
12.4s
Tokens
2,018 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 13.72s 9,579 303 15,641

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