Model Comparison
Fable 5.2 vs GPT 5.6 Terra
Fable 5.2 ranks #1 on the AI IQ leaderboard with an estimated IQ of 144, while GPT 5.6 Terra ranks #17 on the AI IQ leaderboard with an estimated IQ of 130. 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 5.2Anthropic | GPT 5.6 TerraOpenAI | |
|---|---|---|
| Rank | #1 | #17 |
| IQ | 144 | 130 |
| Abstract Reasoning | 134 | 119 |
| Mathematical Reasoning | 148 | 141 |
| Academic Reasoning | 135 | 129 |
| Programmatic Reasoning | 154 | 145 |
| Computer Use | 157 | 128 |
| Reliability | 145 | 118 |
| Knowledge Work | 134 | 128 |
| Emotional Reasoning | — | 117 |
| Effective Cost / 1M Tokens | $73.69 | $13.78 |
| Sticker Price / 1M I/O Tokens | $48.00 | $14.00 |
| Speed | — | 135 tok/s |
| Context Window | 1M | 1M |
| Released | 2026-11-09 | 2026-07-09 |
| Open Weights | No | No |
More comparisons
- Fable 5.2 vs Deepseek V4 Pro
- Fable 5.2 vs Gemini 4 Carbon
- Fable 5.2 vs Glm 5.3
- Fable 5.2 vs GPT 6 Astra
- Fable 5.2 vs Grok 4.7
- Fable 5.2 vs Kimi K3.1 Pro
- Fable 5.2 vs Mimo V2.6 Pro
- Fable 5.2 vs Minimax M3
- Fable 5.2 vs Muse Wonder Full
- Fable 5.2 vs Qwen3.8 Max 0902
- GPT 5.6 Terra vs Deepseek V4 Pro
- GPT 5.6 Terra vs Gemini 4 Carbon
- GPT 5.6 Terra vs Glm 5.3
- GPT 5.6 Terra vs GPT 6 Astra
- GPT 5.6 Terra vs Grok 4.7
- GPT 5.6 Terra vs Kimi K3.1 Pro
- All comparisons