Grok 4.6 released by 2026?

Platform comparison

Market context

SpaceX's xAI division must release Grok 4.6—or a direct successor variant—to the general public by mid-August 2026 for this market to settle Yes. The crowd currently assigns zero probability to the event, suggesting either confidence that no such release will occur within the window or that the naming convention won't align with resolution criteria.

xAI's release cadence offers limited precedent for forecasting. Grok 4.5 arrived in late 2024, roughly six months after Grok 4.4's introduction. A 4.6 release would represent a minor-version increment rather than a major generational leap. Comparable trajectories in the broader LLM space—where OpenAI, Anthropic, and Meta have stretched intervals between flagship releases to 12–18 months—suggest that minor-version updates arrive on shorter cycles when they occur at all. However, xAI has positioned itself as a rapid-iteration competitor, and Elon Musk has historically favoured aggressive release schedules. The zero probability may underestimate the likelihood of a point release within 20 months, particularly if xAI treats 4.6 as a cost-efficiency or task-specialised variant rather than a full-scale model retrain.

Traders should monitor xAI's public roadmap statements and any announcements from Musk regarding model release timelines. Recent reporting from The Information and Bloomberg has tracked xAI's hardware expansion and training capacity, which would be prerequisites for releasing new model versions. The settlement window extends into mid-2026, providing ample time for a minor-version release if xAI maintains its current development velocity. The consensus pricing at 0% likely reflects scepticism about both the release probability and naming ambiguity rather than certainty of non-release.

Methodology

This page reviews Grok 4.6 released by 2026? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Who Will Win, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

UK Frequently Asked Questions

Where can I trade this market with the lowest fees?

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UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.

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