Grok 4.4 released by 2026?

Platform comparison

Market context

The real-world event underpinning this market is xAI’s confirmed roadmap for Grok 4.4, which Elon Musk stated will arrive in roughly two to three weeks with one trillion parameters, yet no public release date has been set for the model. As of late June 2026, the latest publicly accessible version remains Grok 4.3, while Grok 4.5 is already in private beta with SpaceX and Tesla teams but locked behind a non-public rollout plan[1][2].

Historical release patterns show xAI consistently delays public launches after private beta announcements; Grok 4.5, originally targeted for late May 2026, is now running about a month behind with no wider rollout date confirmed[1]. This mirrors earlier progressions where internal evaluations claimed superiority over competitors like Claude Opus, yet public benchmarks remained absent until months later[1]. The current 0% crowd-implied probability reflects this entrenched delay pattern rather than a lack of technical progress.

Traders should monitor Musk’s next X post for a specific public launch window, as he previously gave precise timelines for Grok 4.4 and 4.5 arrivals[2]. Key dependencies include completion of pre-training on Colossus 2, alignment work, and deployment readiness, with Grok 5 pre-training expected to finish in roughly two months[2]. A recent announcement on June 28 confirmed Grok 4.5’s private beta status but omitted any public release date, reinforcing the need to watch for follow-up disclosures from xAI’s official channels[1]. Programmatic approaches to this market would involve scraping Musk’s X feed and xAI’s news page for date-specific keywords, triggering conditional orders only upon explicit public launch confirmation.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Review UK, which mirrors the Polymarket order book directly.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Polymarket Review UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.