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GPT-5.4 Nano (medium) vs Qwen3.5-27B (medium)

The average score is effectively tied at 8.0 vs 7.9. GPT-5.4 Nano (medium) has the lower benchmark cost at $0.235 vs $1.135. GPT-5.4 Nano (medium) is faster at 15.95s vs 114.73s, with pass rates of 66.7% vs 76.8%.

Last updated at: 2026-10-26

Compared models

Rank
#121
Total Output Tokens
110,910
Response Time (avg)
15.95s
Total Cost
$0.235
Rank
#125
Total Output Tokens
635,288
Response Time (avg)
114.73s
Total Cost
$1.135
Recommended model GPT-5.4 Nano (medium)

It has the best score here (8.0), while costing about 4.8x less than Qwen3.5-27B (medium).

Detailed comparison

Metric GPT-5.4 Nano GPT-5.4 Nano medium Release: 2026-03-17 Qwen3.5-27B Qwen3.5-27B medium Release: 2026-02-24
Score 8.0 7.9
Rank #121 #125
Reliability 10.0 10.0
Consistency 8.6 7.9
Attempts 69/69 69/69
Tests Correct
Attempt pass rate 66.7% 76.8%
Flaky tests 4 6
Total Runs 69 69
Cost per result 1.432 8.104
Total Cost $0.235 $1.135
Input Price $0.200 / 1M $0.195 / 1M
Output Price $1.250 / 1M $1.560 / 1M
Cache Read Price $0.020 / 1M N/A
Cache Write Price N/A N/A
Total Input Tokens 237,088 288,919
Output Tokens 8,235 17,484
Reasoning Tokens 102,675 617,804
Response Time (avg) 15.95s 114.73s
Response Time (max) 94.06s 1026.43s
Response Time (total) 366.93s 2638.74s
Parameters ~120B total (~5B active) 27B
Availability Closed Open source

Cache prices apply to input tokens. Reads reuse cached prompts; writes store them and can cost extra. Output tokens use the output price.

Model generation showcase

Hamster playing table tennis

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

#121 GPT-5.4 Nano

medium
Cost
$0.007
Time
24.6s
Tokens
4,943 tok

#125 Qwen3.5-27B

medium
Cost
$0.008
Time
62.0s
Tokens
3,099 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
GPT-5.4 Nano 6.1 4.7 66.7% 2 19.12s 7,305 516 20,778
Qwen3.5-27B 6.2 7.1 55.6% 1 160.69s 7,895 6,381 89,388

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