Model Comparison
GPT 5.3 Codex vs Qwen3.8 Max 0902
GPT 5.3 Codex ranks #66 on the AI IQ leaderboard with an estimated IQ of 112, while Qwen3.8 Max 0902 ranks #24 on the AI IQ leaderboard with an estimated IQ of 126. The table below puts the two models side by side across the seven capability dimensions, emotional reasoning, cost, speed, and context window.
Where They Sit on the IQ Bell Curve
Both models highlighted on the standard normal IQ distribution of every tracked model
| GPT 5.3 CodexOpenAI | Qwen3.8 Max 0902Alibaba | |
|---|---|---|
| Rank | #66 | #24 |
| IQ | 112 | 126 |
| Abstract Reasoning | 84 | 107 |
| Mathematical Reasoning | 103 | 131 |
| Academic Reasoning | 129 | 131 |
| Programmatic Reasoning | 124 | 140 |
| Computer Use | 113 | 122 |
| Reliability | 115 | 120 |
| Knowledge Work | 113 | 129 |
| Emotional Reasoning | — | — |
| Effective Cost / 1M Tokens | $18.57 | $20.42 |
| Sticker Price / 1M I/O Tokens | $15.75 | $8.00 |
| Speed | 83 tok/s | 42 tok/s |
| Context Window | 400K | 1M |
| Released | 2026-02-05 | 2026-09-02 |
| Open Weights | No | No |
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