Grok 4.4 released by 2026?

Platform comparison

Market context

xAI has just confirmed that Grok 4.4, a 1 trillion-parameter model, is entering its final testing phase and will reach the general public within two to three weeks, directly contradicting the current 0% crowd-implied probability that no release will occur before the June 2026 deadline[2]. Elon Musk’s specific roadmap, published recently, places Grok 4.4’s arrival in roughly two to three weeks from his posting date, with training data through early April already complete[2]. This timeline aligns with the progression from Grok 4 to Grok 4.1, where incremental updates followed flagship launches at predictable intervals, suggesting the market’s dismissal of a release is a misreading of xAI’s historical cadence[2][4].

Traders should monitor xAI’s official news channel and Musk’s X posts for the formal public launch announcement, which is expected within the next fortnight[3]. The immediate catalyst is the completion of Grok 4.4’s pre-training, with supervised fine-tuning and reinforcement learning already underway as of late May, pointing to a mid-June public release window[3]. Additional signals include the rollout of Grok Voice and Grok Imagine 2.0, which Musk has teased as warm-ups before the 4.4 launch, confirming the infrastructure is ready for deployment[3]. With Grok 4.5 following shortly after at 1.5 trillion parameters, the entire 4.x series is on a tight, verified schedule that leaves little room for the “No” outcome to hold[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 Prediction Today, 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 Prediction Today. 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.

Do I need to KYC for this market?

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