Musk’s xAI Launches Grok Code Fast 1: 256K Context, Speed, 7-Day Free Access

in #grok • 9 days ago

Elon Musk’s xAI has joined the AI coding race with Grok Code Fast 1—a model built for speed, affordability, and U.S. developers’ needs.

It stands out with:

  • 1/10 the cost of Claude Sonnet 4/GPT-5: $0.20 per 1M input tokens, $1.50 per 1M output tokens.
  • Blazing speed: Responses in seconds, 2M tokens processed per minute, 90%+ prompt cache hit rate.
  • 256K context: Works on complex projects (full-stack apps, games) without code splitting, compatible with GitHub Copilot, Cursor, VS Code.
  • Strong performance: 5th on ToyBench (62.67% score), 70.8% accuracy on SWE-Bench-Verified—matching top tools.

Early U.S. users built interactive games, generated smooth pygame effects, and created UI designs (Earthy, Retro, Professional styles) with simple prompts.

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