The Smartest AI Models of 2026

The competition for artificial intelligence supremacy has reached a fever pitch as of April 2026, with the latest benchmarks showing a remarkable convergence among top-tier models.

According to new data from TrackingAI using the Mensa Norway IQ test, Grok-4.20 Expert Mode and OpenAI’s GPT 5.4 Pro (Vision) are currently tied for the world’s highest AI IQ with a score of 145.

This represents a massive leap from 2025, when the top score was significantly lower at 135, illustrating the exponential growth in abstract pattern recognition and logic.

Google’s Gemini 3.1 Pro Preview remains a formidable contender with a score of 141, while other models like Meta Muse Spark follow closely.

However, the data also reveals a widening gap between frontier models and the rest of the field, as systems like Mistral struggle to keep pace with a score of 97.