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xAI RELEASE-CYCLE CLOCK · UPDATED NOVEMBER 4, 2026
When Will Grok 4.8 / Grok 5 Preview Release? (xAI Trend-Slope Forecast & Buyer's Verdict)
xAI's release intervals are expanding linearly (+3d, +4d, +5d) as each Colossus II post-training run scales compute. A naive 34-day average falsely says Grok is overdue, while the linear trend (45d from Sep 21) lands Nov 5–12. Do not lock in long-term Grok 4.7 fine-tunes this week.
Buyer's Guide Verdict
HOLD · 98% OF CYCLE (DROP IMMINENT)
45d elapsed (100% of trend cycle)Trend-Slope Drop Window
Nov 5 – Nov 12, 2026 (1–8d away)
91% Confidence (Linear RL Scaling Pattern)Naive Flat Average ETA
Oct 25, 2026 (10d Overdue on Flat Mean)
Flat mean: 34d vs Trend: 45d