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Qwen3.5 Plus 2026-04-20 vs Grok 4.20 (medium)

Qwen3.5 Plus 2026-04-20 leads on average score with 6.3 vs 6.3. Qwen3.5 Plus 2026-04-20 has the lower benchmark cost at $0.226 vs $1.582. Qwen3.5 Plus 2026-04-20 is faster at 18.33s vs 36.73s, with pass rates of 44.9% vs 58.0%.

Last updated at: 2026-10-01

Compared models

Rank
#217
Total Output Tokens
69,435
Response Time (avg)
18.33s
Total Cost
$0.226
Rank
#224
Total Output Tokens
302,087
Response Time (avg)
36.73s
Total Cost
$1.582
Recommended model Qwen3.5 Plus 2026-04-20

It has the best score here (6.3), while costing about 7.0x less than Grok 4.20 (medium).

Detailed comparison

Metric Qwen3.5 Plus 2026-04-20 Qwen3.5 Plus 2026-04-20 none Release: 2026-04-20 Grok 4.20 Grok 4.20 medium Release: 2026-03-31
Score 6.3 6.3
Rank #217 #224
Reliability 10.0 10.0
Consistency 8.4 8.2
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 44.9% 58.0%
Flaky tests 5 5
Total Runs 69 69
Cost per result 2.822 14.374
Total Cost $0.226 $1.582
Input Price $0.300 / 1M $1.250 / 1M
Output Price $1.800 / 1M $2.500 / 1M
Total Input Tokens 303,051 392,127
Output Tokens 69,435 7,754
Reasoning Tokens 0 294,333
Response Time (avg) 18.33s 36.73s
Response Time (max) 206.05s 199.66s
Response Time (total) 421.56s 844.68s
Parameters ~397B total (~17B active) ~1T total (~100B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#217 Qwen3.5 Plus 2026-04-20

none
Cost
$0.008
Time
77.0s
Tokens
4,369 tok

#224 SpaceXAI: Grok 4.20

medium
Cost
$0.041
Time
110.3s
Tokens
16,336 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
Qwen3.5 Plus 2026-04-20 3.9 7.8 11.1% 1 1.69s 7,913 480 0
Grok 4.20 6.3 6.6 55.6% 1 109.93s 8,307 268 103,150

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