Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Best Prediction Markets UK Pick polygram.ink |
1% | 99% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Best Prediction Markets UK → |
Polymarket polymarket.com |
1% | 99% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Best Prediction Markets UK → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Best Prediction Markets UK → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Best Prediction Markets UK → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Best Prediction Markets UK → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on Best Prediction Markets UK.
Active sub-markets
| June 30, 2026 | 1% YES | 99% NO |
| September 30, 2026 | 16% YES | 85% NO |
| July 31, 2026 | 2% YES | 98% NO |
| December 31, 2026 | 90% YES | 11% NO |
| October 31, 2026 | 77% YES | 23% NO |
| September 15, 2026 | 5% YES | 96% NO |
Market context
Anthropic, the San Francisco-based AI safety company founded in 2021 by former OpenAI researchers, remains privately held with no announced timeline for a public listing. The market resolves affirmatively only if the company's shares trade on a public securities exchange by 1 July 2027, with an immediate resolution to "No" should Anthropic be acquired by an already-public entity. Current crowd-implied probability stands at 1%, suggesting traders assess a near-zero likelihood of this outcome within the settlement window.
Historical precedent offers limited direct comparison. OpenAI, Anthropic's closest peer, remains private despite substantial funding rounds and reported valuations exceeding $80 billion as of late 2024. Most large AI infrastructure companies have either remained private for extended periods (like SpaceX) or pursued acquisition rather than independent IPO routes. Anthropic's own trajectory—raising over $7 billion in funding whilst maintaining private status—mirrors the extended pre-IPO runway common among capital-intensive technology firms. The 1% probability reflects this structural reality: venture-backed AI companies typically require either profitability signals or strategic acquisition to exit private markets within a five-to-seven-year window.
Traders monitoring this contract should track Anthropic's funding announcements, revenue growth disclosures (if any become public), and executive commentary on strategic direction. Recent reports from late 2024 indicated the company was exploring additional funding rather than IPO preparation. Regulatory shifts affecting AI companies, changes in Anthropic's investor composition, or strategic pivots toward profitability could alter the calculus, though the settlement window's proximity to present conditions makes material shifts unlikely without significant near-term announcements.
Methodology
This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets UK, which mirrors the Polymarket order book directly.
Resolution & payout
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
FAQ
- Is this market available outside the US?
- Best Prediction Markets UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.
- 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 fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
- 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.
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