Compare GPT-5.3-Codex by OpenAI against Qwen: Qwen3 Max Thinking by Qwen, context windows of 400K vs 262K, tested across 53 shared challenges. Updated April 2026.
GPT-5.3-Codex and Qwen: Qwen3 Max Thinking are both competitive models. GPT-5.3-Codex costs $1.75/M input tokens vs $1.2/M for Qwen: Qwen3 Max Thinking. Context windows: 400K vs 262K tokens. Compare their real outputs side by side below.
GPT-5.3-Codex is made by openai while Qwen: Qwen3 Max Thinking is from qwen. GPT-5.3-Codex has a 400K token context window compared to Qwen: Qwen3 Max Thinking's 262K. On pricing, GPT-5.3-Codex costs $1.75/M input tokens vs $1.2/M for Qwen: Qwen3 Max Thinking.
No community votes yet. On paper, GPT-5.3-Codex has the edge — bigger context window, major provider backing.
Qwen: Qwen3 Max Thinking uses 8.7x more emoji
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-5.3-Codex by OpenAI against Qwen: Qwen3 Max Thinking by Qwen, context windows of 400K vs 262K, tested across 53 shared challenges. Updated April 2026.
GPT-5.3-Codex and Qwen: Qwen3 Max Thinking are both competitive models. GPT-5.3-Codex costs $1.75/M input tokens vs $1.2/M for Qwen: Qwen3 Max Thinking. Context windows: 400K vs 262K tokens. Compare their real outputs side by side below.
GPT-5.3-Codex is made by openai while Qwen: Qwen3 Max Thinking is from qwen. GPT-5.3-Codex has a 400K token context window compared to Qwen: Qwen3 Max Thinking's 262K. On pricing, GPT-5.3-Codex costs $1.75/M input tokens vs $1.2/M for Qwen: Qwen3 Max Thinking.
No community votes yet. On paper, GPT-5.3-Codex has the edge — bigger context window, major provider backing.
Qwen: Qwen3 Max Thinking uses 8.7x more emoji
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.
