Grok

Grok 4.20 is xAI's March 2026 model release, launched on March 22nd. It focuses on closing the factuality gap that affected earlier Grok versions, particularly for real-time and recent-events queries. With deep integration into X's (formerly Twitter) live data stream and improved source attribution, Grok 4.20 scored highest among all March 2026 model releases on benchmarks measuring accuracy on news published within the past 30 days.

The model ships in multiple configurations: reasoning, non-reasoning, and a dedicated multi-agent mode — all sharing a 2-million-token context window. xAI also launched a dedicated enterprise API with guaranteed tokens-per-minute capacity.

Key features: - Real-time X data integration: best-in-class accuracy on current events and news - Improved source attribution: citations and confidence signals for factual claims - 2M token context window across all configurations - Multiple modes: Auto, Fast, Expert, Multi-agent, and Heavy - 4-agent collaboration system for complex, parallelizable tasks - Rapid learning architecture with improved instruction following - Reduced hallucinations, enhanced LaTeX support, and better image reasoning - Available via Grok.com, xAI API, and X Premium subscriptions

Grok 4.20 is the strongest model currently available for use cases where recency matters over deep reasoning: social media monitoring, news summarization, competitive intelligence, trend analysis, and real-time research. Enterprise customers can purchase dedicated API capacity.