Model Comparison
Fable 5.1 vs Kat Coder Pro V1
Fable 5.1 ranks #5 on the AI IQ leaderboard with an estimated IQ of 137, while Kat Coder Pro V1 ranks #99 on the AI IQ leaderboard with an estimated IQ of 104. 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
| Fable 5.1Anthropic | Kat Coder Pro V1China (Other) | |
|---|---|---|
| Rank | #5 | #99 |
| IQ | 137 | 104 |
| Abstract Reasoning | 124 | 77 |
| Mathematical Reasoning | 147 | 115 |
| Academic Reasoning | 136 | 111 |
| Programmatic Reasoning | 147 | 112 |
| Computer Use | 140 | 101 |
| Reliability | 135 | 101 |
| Knowledge Work | 133 | 107 |
| Emotional Reasoning | — | — |
| Effective Cost / 1M Tokens | $90.99 | $1.58 |
| Sticker Price / 1M I/O Tokens | $60.00 | $1.50 |
| Speed | 71 tok/s | 61 tok/s |
| Context Window | 1M | 256K |
| Released | 2026-09-01 | — |
| Open Weights | No | No |
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