# Grok 4.5 AI model released with performance upgrades

xAI has launched Grok 4.5, an updated version of its conversational AI. The release includes improvements in reasoning, speed, and accuracy over the previous model. This matters as it intensifies competition in the rapidly evolving AI assistant market.

**Importance:** 3/5

## Sources

### Technology
- [Hacker News](https://x.ai/news/grok-4-5) — Wed, 08 Jul 2026 18:00:32 +0000