What happened
Artificial Analysis is a group that tests AI models on its own. It scored GPT-5.6 Sol at 59 on its Intelligence Index. That put Sol one point behind Claude Fable 5. On its Coding Agent Index, a test of step-by-step coding work, Sol reached a new high of 80. That is 2.8 points above Fable 5. Sol used less than half the output tokens to get there.
The context
Benchmarks are lab tests, not real-world proof. Still, they hint at where each model is strong.
What this means for you
👤EverydayCoding help inside apps you use may get faster and more reliable.
💼At workDevelopers may finish more coding tasks with fewer steps and less waiting.
🏢BusinessDoing well while using fewer tokens can lower the cost of AI coding tools.
🌍The worldThe result keeps the top of the field close, with leaders trading places test by test.
Ledger entry: Capability · Materiality 3 · T2 Measured → ▲ for OpenAI
Sources
- Artificial Analysis, https://artificialanalysis.ai/articles/gpt-5-6-has-landed T2 Measured