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Claude Sonnet 5.5 (low) vs Qwen3.5-Flash (medium)

The average score is effectively tied at 6.2 vs 6.1. Qwen3.5-Flash (medium) has the lower benchmark cost at $0.142 vs $0.620. Claude Sonnet 5.5 (low) is faster at 5.68s vs 84.44s, with pass rates of 43.9% vs 65.2%.

Last updated at: 2026-09-29

Compared models

Rank
#232
Total Output Tokens
28,630
Response Time (avg)
5.68s
Total Cost
$0.620
Rank
#239
Total Output Tokens
512,846
Response Time (avg)
84.44s
Total Cost
$0.142
Recommended model Claude Sonnet 5.5 (low)

It has the best score here (6.2), while responding about 14.9x faster than Qwen3.5-Flash (medium).

Detailed comparison

Metric Claude Sonnet 5.5 Claude Sonnet 5.5 low Release: 2026-09-29 Qwen3.5-Flash Qwen3.5-Flash medium Release: 2026-02-24
Score 6.2 6.1
Rank #232 #239
Reliability 10.0 10.0
Consistency 9.4 7.8
Attempts 66/66 66/66
Tests Correct
Attempt pass rate 43.9% 65.2%
Flaky tests 2 6
Total Runs 66 66
Cost per result 6.880 1.491
Total Cost $0.620 $0.142
Input Price $2.000 / 1M $0.065 / 1M
Output Price $10.000 / 1M $0.260 / 1M
Total Input Tokens 166,418 118,508
Output Tokens 21,456 35,457
Reasoning Tokens 7,174 477,389
Response Time (avg) 5.68s 84.44s
Response Time (max) 22.74s 515.38s
Response Time (total) 124.87s 1773.20s
Parameters ~1T total (~100B active) ~35B total (~3B active)
Availability Closed Closed

Model generation showcase

Hamster playing table tennis

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

#232 Claude Sonnet 5.5

low
Cost
$0.020
Time
15.3s
Tokens
2,077 tok

#239 Qwen3.5-Flash

medium
Cost
$0.002
Time
25.8s
Tokens
4,294 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 Sonnet 5.5 3.2 9.7 0.0% 0 5.81s 10,608 5,903 0
Qwen3.5-Flash 3.7 7.2 22.2% 1 58.87s 6,685 302 90,081

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