Compare/Qwen3.5 4B (Reasoning) vs GPT-5.4 mini (Non-Reasoning)

Qwen3.5 4B (Reasoning)vsGPT-5.4 mini (Non-Reasoning)

Side-by-side comparison of pricing, 12 benchmarks, and generation speed.

Alibaba

Qwen3.5 4B (Reasoning)

Input
$0/M
Output
$0/M
Speed
TTFT
OpenAI

GPT-5.4 mini (Non-Reasoning)

Input
$0.75/M
Output
$4.5/M
Speed
202 tok/s
TTFT
0.45s

Winner by Category

Cheaper
Qwen3.5 4B (Reasoning)
Faster (tok/s)
GPT-5.4 mini (Non-Reasoning)
Lower Latency
Qwen3.5 4B (Reasoning)
Benchmarks (4-2)
Qwen3.5 4B (Reasoning)

Pricing Comparison

MetricQwen3.5 4B (Reasoning)GPT-5.4 mini (Non-Reasoning)
Input ($/M tokens)$0$0.75
Output ($/M tokens)$0$4.5
Cost for 1M input + 100K output tokens:
Qwen3.5 4B (Reasoning)$0.00
GPT-5.4 mini (Non-Reasoning)$1.20

Speed Comparison

Output Speed (tokens/s) — higher is better
Qwen3.5 4B (Reasoning)
GPT-5.4 mini (Non-Reasoning)
202 tok/s
Time to First Token (seconds) — lower is better
Qwen3.5 4B (Reasoning)
GPT-5.4 mini (Non-Reasoning)
0.45s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
27.123.3
Coding Index
17.525.3
Math Index
GPQA Diamond
77.1%60.6%
MMLU-Pro
LiveCodeBench
AIME 2025
MATH-500
Humanity's Last Exam
7.8%5.7%
SciCode
16.1%39.6%
IFBench
52.0%38.8%
TerminalBench
18.2%18.2%
Qwen3.5 4B (Reasoning)4 wins
2 winsGPT-5.4 mini (Non-Reasoning)

Frequently Asked Questions

Which is cheaper, Qwen3.5 4B (Reasoning) or GPT-5.4 mini (Non-Reasoning)?

Qwen3.5 4B (Reasoning) is cheaper overall. Its blended price (3:1 input/output ratio) is $0.00/M tokens vs $1.69/M for GPT-5.4 mini (Non-Reasoning).

Which model performs better on benchmarks?

Qwen3.5 4B (Reasoning) wins 4 out of 12 benchmarks compared to 2 for GPT-5.4 mini (Non-Reasoning). See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

GPT-5.4 mini (Non-Reasoning) generates tokens faster at 202 tok/s vs 0 tok/s. Qwen3.5 4B (Reasoning) also has lower time-to-first-token (0.00s vs 0.45s).

When should I use Qwen3.5 4B (Reasoning) vs GPT-5.4 mini (Non-Reasoning)?

Choose based on your priorities: Qwen3.5 4B (Reasoning) for lower cost, Qwen3.5 4B (Reasoning) for stronger benchmark performance, and GPT-5.4 mini (Non-Reasoning) for faster generation. For latency-sensitive apps, check the TTFT comparison above.