Grok 4.4 released by 2026?

Platform comparison

Market context

The real-world event underpinning this market is xAI’s confirmed but delayed rollout of its next Grok iteration, specifically Grok 4.4, which remains in private beta with no public launch date set. Elon Musk announced Grok 4.5 on 28 June 2026, yet it is locked behind a private beta for SpaceX and Tesla teams, with Grok 4.3 still the only publicly accessible model [1]. This pattern mirrors earlier releases where flagship models like Grok 4 were announced months before general availability, and where internal testing phases routinely extended beyond initial targets [2].

Historically, xAI’s release cadence has shown a consistent lag between announcement and public deployment. Grok 4.4 was originally targeted for late May 2026 but is now running approximately a month behind schedule, with no broader rollout plan confirmed as of 29 June 2026 [1]. Comparable cases, such as the progression from Grok 4 to Grok 4.1, demonstrate that private beta phases often precede public access by several weeks, and that internal evaluations—while claiming parity with top-tier models like Claude Opus—do not guarantee immediate public release [1].

Traders should monitor Musk’s stated schedule: Grok 4.4 is expected within two to three weeks from his announcement, with training data through early April, while Grok 4.5 follows in four to five weeks [2]. Key catalysts include official xAI release notes, API updates, and any public beta expansions beyond SpaceX and Tesla [4]. A recent roadmap post from Musk outlines a precise window for 4.4’s arrival, making it the primary dependency for a “Yes” resolution before the 2026 settlement deadline [2].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Grok 4.4 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 Kalshi Fees, which mirrors the Polymarket order book at 0% fees.

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 Kalshi Fees. 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.

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.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Kalshi Fees trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.