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Anthropic: Claude Sonnet 4.6 vs xAI: Grok 4.5

Summary

Claude Sonnet 4.6 (medium) vs Grok 4.5 (low) benchmark comparison: The average score is effectively tied at 7.8 vs 7.8. Grok 4.5 (low) has the lower benchmark cost at $0.760 vs $1.418. Grok 4.5 (low) is faster at 15.48s vs 17.06s, with pass rates of 65.1% vs 74.6%.

Recommended model: Grok 4.5 (low) - It has the best score here (7.8), while costing about 1.9x less than Claude Sonnet 4.6 (medium).

Last updated at: 2026-07-08

Metric Claude Sonnet 4.6 Claude Sonnet 4.6 medium Release: 2026-02-17 Grok 4.5 Grok 4.5 low Release: 2026-07-08
Score 7.8 7.8
Rank #33 #34
Reliability 10.0 10.0
Consistency 9.1 9.7
Tests Correct
Attempt pass rate 65.1% 74.6%
Flaky tests 2 1
Total Runs 63 63
Cost per result 10.904 5.061
Total Cost $1.418 $0.760
Input Price $3.000 / 1M $2.000 / 1M
Output Price $15.000 / 1M $6.000 / 1M
Total Input Tokens 49,112 58,652
Output Tokens 54,703 1,735
Reasoning Tokens 29,970 105,233
Response Time (avg) 17.06s 15.48s
Response Time (max) 46.35s 205.28s
Response Time (total) 221.83s 324.98s

Generation showcase

Hamster playing table tennis

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

#33 Claude Sonnet 4.6

medium
Invalid SVG
Cost
$0.000
Time
300.0s
Tokens
0 tok

#34 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

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Sonnet 4.6 6.5 10.0 50.0% 0 2.98s 789 1,046 1,093
Grok 4.5 10.0 10.0 100.0% 0 2.75s 2,991 261 3,000
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Sonnet 4.6 5.7 6.6 44.4% 1 33.29s 6,995 16,089 3,686
Grok 4.5 10.0 10.0 100.0% 0 13.72s 9,579 303 15,641
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Sonnet 4.6 10.0 10.0 100.0% 0 46.35s 18,351 5,871 3,962
Grok 4.5 3.0 10.0 0.0% 0 8.16s 15,084 261 2,370
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Sonnet 4.6 10.0 10.0 100.0% 0 13.90s 8,676 649 742
Grok 4.5 10.0 10.0 100.0% 0 3.44s 8,937 225 2,549
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Sonnet 4.6 2.9 7.2 11.1% 1 0ms 471 25,790 16,919
Grok 4.5 3.0 10.0 0.0% 0 72.64s 2,514 14 70,275
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Sonnet 4.6 10.0 10.0 100.0% 0 4.94s 564 256 433
Grok 4.5 6.1 3.1 66.7% 1 4.88s 1,077 98 1,253
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Sonnet 4.6 10.0 10.0 100.0% 0 2.61s 792 318 552
Grok 4.5 9.8 10.0 100.0% 0 2.80s 1,857 57 1,878
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Sonnet 4.6 10.0 10.0 100.0% 0 5.31s 816 592 646
Grok 4.5 10.0 10.0 100.0% 0 3.20s 2,430 217 2,590
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Sonnet 4.6 10.0 10.0 100.0% 0 7.48s 11,454 655 351
Grok 4.5 10.0 10.0 100.0% 0 5.83s 13,394 284 871
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Sonnet 4.6 3.0 10.0 0.0% 0 30.09s 204 3,437 1,586
Grok 4.5 3.0 10.0 0.0% 0 13.98s 789 15 4,806

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