Grok 4.3 Live on xAI API, Tops Agentic Tool Calling Leaderboards

Core summary

One sentence to understand this update

xAI has launched Grok 4.3 on its API, claiming it to be their fastest and most intelligent model to date, excelling in agentic tool calling and instruction following leaderboards.

Impact & opportunity

What this could mean

Builders can now leverage Grok 4.3 via API for advanced agent applications, particularly those requiring precise tool calling and complex instruction execution.