Originally published on AI Tech Connect.
What just landed xAI released Grok 4.6 on 12 August 2026, roughly five weeks after Grok 4.5 — a short gap between frontier releases, and not a cosmetic one. 61 on the Artificial Analysis Intelligence Index. Level with GPT-5.6 Sol, two points behind Claude Opus 5 at 63, one behind Claude Fable 5 at 62. A fast climb: five points up on Grok 4.5 and twenty-three up on Grok 4.3, on the same index. Pricing held flat at $2.00 per 1M input tokens and $6.00 per 1M output, unchanged from Grok 4.5 — against $5 and $30 for GPT-5.6 Sol. 500,000-token context window, also unchanged. Modality is text and image input, text output. An efficiency gap that flatters it further: roughly 53 turns per task against roughly 103 for Claude Opus 5 at maximum reasoning, and about a quarter of the input tokens across…
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