GPT-4.5 vs Qwen: Qwen3 Max Thinking

Compare GPT-4.5 by OpenAI against Qwen: Qwen3 Max Thinking by Qwen, context windows of 128K vs 262K, tested across 24 shared challenges. Updated April 2026.

Which is better, GPT-4.5 or Qwen: Qwen3 Max Thinking?

GPT-4.5 and Qwen: Qwen3 Max Thinking are both competitive models. GPT-4.5 costs $75/M input tokens vs $1.2/M for Qwen: Qwen3 Max Thinking. Context windows: 128K vs 262K tokens. Compare their real outputs side by side below.

Key Differences Between GPT-4.5 and Qwen: Qwen3 Max Thinking

GPT-4.5 is made by openai while Qwen: Qwen3 Max Thinking is from qwen. GPT-4.5 has a 128K token context window compared to Qwen: Qwen3 Max Thinking's 262K. On pricing, GPT-4.5 costs $75/M input tokens vs $1.2/M for Qwen: Qwen3 Max Thinking.

Our Verdict
GPT-4.5
GPT-4.5
Qwen: Qwen3 Max Thinking
Qwen: Qwen3 Max Thinking

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Qwen: Qwen3 Max Thinking is 25x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
100%

Qwen: Qwen3 Max Thinking uses 137.1x more emoji

GPT-4.5
Qwen: Qwen3 Max Thinking
63%Vocabulary61%
16wSentence Length15w
0.57Hedging0.23
4.7Bold5.2
6.4Lists3.9
0.00Emoji1.37
1.30Headings1.22
0.54Transitions0.04
Based on 11 + 13 text responses
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GPT-4.5Qwen: Qwen3 Max Thinking

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026
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