Grok 4.3

xAI's latest model. AA Intelligence Index: 53. Largest improvement on GDPval-AA (ELO 1500, +321 over Grok 4.20). Can generate downloadable PDFs, spreadsheets, and PowerPoint decks directly from conversation. Launched alongside Text-to-Speech and Speech-to-Text APIs (25+ languages, multichannel audio, word-level speaker ID).

37.5% lower input and 58.3% lower output token prices vs. previous generation. Currently restricted to SuperGrok Heavy subscribers ($300/month), full rollout estimated mid-to-late May 2026. Proprietary.