xAI announced Grok 4.6, delivering major speed and reasoning enhancements tailored for long-running coding agents, with Day-0 availability in Grok Build, Cursor, and the API at $2 / $6 per million tokens.

Key Takeaways

  • ✓Deeply optimized via RL for multi-file refactoring, dependency tracking, and autonomous agent loops;
  • ✓Priced at $2/M input and $6/M output, keeping Grok 4.5 parity while boosting reasoning and speed;
  • ✓Available Day-0 in Grok Build, Cursor, and the API with 2x usage allowance during launch week.