Model Comparison
GPT 5.6 Luna vs GPT 6 Astra
GPT 5.6 Luna ranks #29 on the AI IQ leaderboard with an estimated IQ of 124, while GPT 6 Astra ranks #4 on the AI IQ leaderboard with an estimated IQ of 140. 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 5.6 LunaOpenAI | GPT 6 AstraOpenAI | |
|---|---|---|
| Rank | #29 | #4 |
| IQ | 124 | 140 |
| Abstract Reasoning | 104 | 136 |
| Mathematical Reasoning | 138 | 149 |
| Academic Reasoning | 129 | 134 |
| Programmatic Reasoning | 131 | 151 |
| Computer Use | 127 | 140 |
| Reliability | 116 | 136 |
| Knowledge Work | 126 | 133 |
| Emotional Reasoning | 105 | — |
| Effective Cost / 1M Tokens | $1.63 | $34.14 |
| Sticker Price / 1M I/O Tokens | $1.40 | $60.00 |
| Speed | 136 tok/s | 69 tok/s |
| Context Window | 1M | 1.1M |
| Released | 2026-07-09 | 2026-09-03 |
| Open Weights | No | No |
More comparisons
- GPT 5.6 Luna vs Deepseek V4 Pro
- GPT 5.6 Luna vs Fable 5.1
- GPT 5.6 Luna vs Gemini 4 Argon
- GPT 5.6 Luna vs Glm 5.3
- GPT 5.6 Luna vs Grok 4.7
- GPT 5.6 Luna vs Kimi K3
- GPT 5.6 Luna vs Mimo V2.6 Pro
- GPT 5.6 Luna vs Minimax M3
- GPT 5.6 Luna vs Muse Wonder Full
- GPT 5.6 Luna vs Qwen3.8 Max 0902
- GPT 6 Astra vs Deepseek V4 Pro
- GPT 6 Astra vs Fable 5.1
- GPT 6 Astra vs Gemini 4 Argon
- GPT 6 Astra vs Glm 5.3
- GPT 6 Astra vs Grok 4.7
- GPT 6 Astra vs Kimi K3
- All comparisons