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Qwen: Qwen3.5-9B vs xAI: Grok 4.20

Summary

Qwen3.5-9B vs Grok 4.20 benchmark comparison: Grok 4.20 leads on average score with 5.4 vs 4.6. Qwen3.5-9B has the lower benchmark cost at $0.006 vs $0.057. Grok 4.20 is faster at 1.11s vs 1.89s, with pass rates of 20.6% vs 33.3%.

Recommended model: Qwen3.5-9B - It offers the best overall trade-off: a competitive score (4.6), lower cost than Grok 4.20, and balanced response time.

Last updated at: 2026-06-10

Metric Qwen3.5-9B Qwen3.5-9B none Release: 2026-03-02 Grok 4.20 Grok 4.20 none Release: 2026-03-31
Score 4.6 5.4
Rank #155 #128
Reliability 10.0 N/A
Consistency 9.7 10.0
Tests Correct
Attempt pass rate 20.6% 33.3%
Flaky tests 1 0
Total Runs 63 54
Cost per result 0.123 1.570
Total Cost $0.006 $0.057
Input Price $0.100 / 1M $1.250 / 1M
Output Price $0.150 / 1M $2.500 / 1M
Total Input Tokens 48,041 41,313
Output Tokens 3,952 1,923
Reasoning Tokens 0 0
Response Time (avg) 1.89s 1.11s
Response Time (max) 6.03s 6.04s
Response Time (total) 39.68s 19.96s

Generation showcase

Hamster playing table tennis

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

#155 Qwen3.5-9B

none
Invalid SVG
Cost
$0.000
Time
300.0s
Tokens
0 tok

#128 xAI: Grok 4.20

none
Cost
$0.004
Time
6.5s
Tokens
1,367 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
Qwen3.5-9B 3.1 9.9 0.0% 0 1.71s 696 582 0
Grok 4.20 4.8 10.0 25.0% 0 501ms 1,986 267 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Qwen3.5-9B 3.9 7.8 11.1% 1 5.60s 7,913 1,042 0
Grok 4.20 3.4 9.3 0.0% 0 1.22s 1,074 312 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Qwen3.5-9B 3.0 10.0 0.0% 0 5.91s 20,397 1,255 0
Grok 4.20 3.0 10.0 0.0% 0 6.04s 17,673 282 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Qwen3.5-9B 10.0 10.0 100.0% 0 847ms 7,788 249 0
Grok 4.20 10.0 10.0 100.0% 0 522ms 7,749 207 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Qwen3.5-9B 3.0 10.0 0.0% 0 464ms 789 24 0
Grok 4.20 3.0 10.0 0.0% 0 687ms 1,746 325 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Qwen3.5-9B 4.4 9.9 0.0% 0 552ms 522 99 0
Grok 4.20 4.8 10.0 0.0% 0 659ms 819 83 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Qwen3.5-9B 6.5 10.0 50.0% 0 514ms 711 75 0
Grok 4.20 6.3 10.0 50.0% 0 445ms 1,350 60 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Qwen3.5-9B 3.2 10.0 0.0% 0 621ms 714 347 0
Grok 4.20 5.3 10.0 33.3% 0 473ms 1,671 198 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Qwen3.5-9B 10.0 10.0 100.0% 0 1.27s 8,301 273 0
Grok 4.20 10.0 10.0 100.0% 0 4.63s 7,245 189 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Qwen3.5-9B 3.0 10.0 0.0% 0 2.32s 210 6 0
Grok 4.20 - - - - - - - - -

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