Compare GPT-5.4 Pro by OpenAI against Qwen: Qwen3.5 27B by Qwen, context windows of 1.1M vs 262K, tested across 18 shared challenges. Updated April 2026.
GPT-5.4 Pro and Qwen: Qwen3.5 27B are both competitive models. GPT-5.4 Pro costs $30/M input tokens vs $0.3/M for Qwen: Qwen3.5 27B. Context windows: 1050K vs 262K tokens. Compare their real outputs side by side below.
GPT-5.4 Pro is made by openai while Qwen: Qwen3.5 27B is from qwen. GPT-5.4 Pro has a 1050K token context window compared to Qwen: Qwen3.5 27B's 262K. On pricing, GPT-5.4 Pro costs $30/M input tokens vs $0.3/M for Qwen: Qwen3.5 27B.
No community votes yet. On paper, GPT-5.4 Pro has the edge — bigger model tier, bigger context window, major provider backing.
Qwen: Qwen3.5 27B is 75x cheaper per token — worth considering if cost matters.
Ask them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.

Compare GPT-5.4 Pro by OpenAI against Qwen: Qwen3.5 27B by Qwen, context windows of 1.1M vs 262K, tested across 18 shared challenges. Updated April 2026.
GPT-5.4 Pro and Qwen: Qwen3.5 27B are both competitive models. GPT-5.4 Pro costs $30/M input tokens vs $0.3/M for Qwen: Qwen3.5 27B. Context windows: 1050K vs 262K tokens. Compare their real outputs side by side below.
GPT-5.4 Pro is made by openai while Qwen: Qwen3.5 27B is from qwen. GPT-5.4 Pro has a 1050K token context window compared to Qwen: Qwen3.5 27B's 262K. On pricing, GPT-5.4 Pro costs $30/M input tokens vs $0.3/M for Qwen: Qwen3.5 27B.
No community votes yet. On paper, GPT-5.4 Pro has the edge — bigger model tier, bigger context window, major provider backing.
Qwen: Qwen3.5 27B is 75x cheaper per token — worth considering if cost matters.
Ask them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.

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13 fights queued
1+ more head-to-head results. Free. Not a trick.
Free account. No card required. By continuing, you agree to Rival's Terms and Privacy Policy