xAI Grok 4.6
Long-running agents + visual work. Same-day Cursor, Grok Build, SpaceXAI API, OpenRouter/Vercel/Cloudflare. $2 / $6 per 1M in/out (fast variant 2×). Docs: 500k context, cutoff 2026-02-01. Copilot Aug 14; Bedrock GA Aug 19 at $2 / $0.50 cached / $6. vendor