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Qwen: Qwen3.5 Plus 2026-04-20 vs xAI: Grok 4.5

Summary

Qwen3.5 Plus 2026-04-20 (medium) vs Grok 4.5 (low) benchmark comparison: The average score is effectively tied at 7.8 vs 7.8. Qwen3.5 Plus 2026-04-20 (medium) has the lower benchmark cost at $0.317 vs $0.760. Grok 4.5 (low) is faster at 15.48s vs 46.36s, with pass rates of 66.7% vs 74.6%.

Recommended model: Qwen3.5 Plus 2026-04-20 (medium) - It has the best score here (7.8), while costing about 2.4x less than Grok 4.5 (low).

Last updated at: 2026-07-08

Metric Qwen3.5 Plus 2026-04-20 Qwen3.5 Plus 2026-04-20 medium Release: 2026-04-20 Grok 4.5 Grok 4.5 low Release: 2026-07-08
Score 7.8 7.8
Rank #36 #34
Reliability 10.0 10.0
Consistency 9.0 9.7
Tests Correct
Attempt pass rate 66.7% 74.6%
Flaky tests 2 1
Total Runs 63 63
Cost per result 3.023 5.061
Total Cost $0.317 $0.760
Input Price $0.300 / 1M $2.000 / 1M
Output Price $1.800 / 1M $6.000 / 1M
Total Input Tokens 42,097 58,652
Output Tokens 2,280 1,735
Reasoning Tokens 166,613 105,233
Response Time (avg) 46.36s 15.48s
Response Time (max) 189.38s 205.28s
Response Time (total) 973.57s 324.98s

Generation showcase

Hamster playing table tennis

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

#36 Qwen3.5 Plus 2026-04-20

medium
Cost
$0.008
Time
76.7s
Tokens
4,355 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
Qwen3.5 Plus 2026-04-20 10.0 10.0 100.0% 0 10.84s 672 215 7,748
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
Qwen3.5 Plus 2026-04-20 6.2 8.7 33.3% 0 125.25s 7,630 308 58,682
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
Qwen3.5 Plus 2026-04-20 10.0 10.0 100.0% 0 92.41s 14,934 483 17,490
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
Qwen3.5 Plus 2026-04-20 10.0 10.0 100.0% 0 38.32s 7,782 270 14,668
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
Qwen3.5 Plus 2026-04-20 2.9 7.2 11.1% 1 53.10s 771 63 28,414
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
Qwen3.5 Plus 2026-04-20 4.9 9.6 0.0% 0 25.30s 516 125 4,792
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
Qwen3.5 Plus 2026-04-20 10.0 10.0 100.0% 0 20.25s 699 103 7,689
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
Qwen3.5 Plus 2026-04-20 8.2 7.2 88.9% 1 17.67s 696 338 9,800
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
Qwen3.5 Plus 2026-04-20 10.0 10.0 100.0% 0 14.72s 8,193 348 2,164
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
Qwen3.5 Plus 2026-04-20 3.0 10.0 0.0% 0 92.57s 204 27 15,166
Grok 4.5 3.0 10.0 0.0% 0 13.98s 789 15 4,806

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