Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Bot UK) Pick polygram.ink (preferred broker) |
92% | 8% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Place a position → |
Polymarket (direct) polymarket.com |
92% | 8% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Place a position → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Place a position → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Place a position → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Place a position → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| August 21 | 92% |
| August 14 | 82% |
| August 13 | 42% |
| August 12 | 19% |
| August 11 | 1% |
| August 7 | 0% |
Market context
SpaceX's xAI division must release a Grok model explicitly versioned 4.6 or higher (including point-release variants like 4.75) and make it available to the general public by mid-August 2026. The resolution criteria include task-specialised or cost-efficiency variants bearing the Grok 4.6 designation, but exclude a full generational leap to Grok 5, which would not qualify.
Historical release cadence offers the primary reference frame. Grok 4.5 arrived in late 2024, roughly six months after Grok 4.4's introduction. That interval suggests xAI targets semi-annual major releases, though no formal schedule has been published. Competitors including OpenAI, Anthropic, and Meta have maintained irregular release timelines; OpenAI's o1 and o3 models arrived months apart with minimal advance notice. The 0% crowd probability reflects scepticism that xAI will execute a numbered release within the 20-month window, despite the historical pattern favouring it.
Traders should monitor xAI's official announcements and Elon Musk's social media statements for hints of development milestones or launch windows. Recent reports from December 2024 indicated xAI was scaling compute infrastructure and recruiting engineering talent, suggesting active development pipelines. Public availability—the critical settlement condition—requires release via xAI's API, web interface, or third-party integrations, not merely internal testing. Programmatic monitoring of xAI's developer documentation and changelog feeds will flag version bumps faster than manual tracking. The market's current odds discount the possibility of a 4.6 release entirely; any credible announcement of a versioned roadmap would materially shift pricing.
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 Polymarket Bot UK, 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.
UK Frequently Asked Questions
- 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 Bot 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.
- Is Polymarket legal in the UK?
- Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.
- Do I pay tax on prediction market profits in the UK?
- 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.
- How do I deposit on Polymarket from the UK?
- UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.
Trade Grok 4.6 released by 2026? on Polymarket Bot UK
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