Grok 4 Fast was an AI model released by xAI on September 19, 2025, designed to combine fast responses, advanced

Grok 4 Heavy is xAI’s advanced, multi-agent reasoning system introduced on July 9, 2025. Unlike standard Grok 4, which processes

Grok 4 is xAI’s reasoning-focused AI model introduced on July 9, 2025. It brought stronger mathematical and scientific reasoning, native

Grok 3 Mini is a reasoning-focused AI model developed by SpaceXSI, Elon Musk’s artificial intelligence company. Introduced on February 19,

Grok 3 is an AI model developed by xAI and introduced in February 2025, with a focus on reasoning, mathematics,

Grok-2 Mini was introduced by xAI on August 13, 2024, as a smaller, speed-focused companion to Grok-2. Its defining advantage

Grok 2 was a major AI model released by xAI on August 13, 2024. It introduced improvements in reasoning, coding,

Grok 5 is xAI’s next major AI model, but it has not been officially released yet. xAI confirmed in January