xAI Releases Grok 4
Narrative
Most intelligent model in the world with native multimodal understanding, tool use, real-time search integration, advanced reasoning, and reduced hallucinations. Includes Grok 4 Heavy variant for maximum performance. Available to SuperGrok/Premium+ users and xAI API.
Reality
Launched July 9-14, 2025. Immediate access via grok.com, X, iOS/Android apps, and API. Introduced SuperGrok Heavy tier for Grok 4 Heavy. Strong performance in reasoning/tool-calling benchmarks; positioned as direct competitor to GPT-4o / Claude 3.5 / Gemini. Rapid iteration cycle continues.
Implication
Elevated xAI to top-tier frontier contender with native multimodality and tool integration. Distribution via X and aggressive pricing drove fast adoption. Set foundation for incremental updates and video/audio expansions. Competitive pressure intensified on OpenAI/Anthropic.