Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via March Madness Predictions) Pick polygram.ink (preferred broker) |
95% | 5% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
95% | 5% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | See live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | See live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | See live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | See live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| September 3 | 95% |
| September 4 | 3% |
| September 5 | 1% |
| September 24 | 1% |
| No release by September 30 | 1% |
| On or prior to September 2 | 0% |
| September 6 | 0% |
| September 7 | 0% |
| September 8 | 0% |
| September 9 | 0% |
| September 10 | 0% |
| September 11 | 0% |
| September 12 | 0% |
| September 13 | 0% |
| September 14 | 0% |
| September 15 | 0% |
| September 16 | 0% |
| September 17 | 0% |
| September 18 | 0% |
| September 19 | 0% |
| September 20 | 0% |
| September 21 | 0% |
| September 22 | 0% |
| September 23 | 0% |
| September 25 | 0% |
| September 26 | 0% |
| September 27 | 0% |
| September 28 | 0% |
| September 29 | 0% |
| September 30 | 0% |
Market context
Traders on decentralised prediction markets give 95% probability to openai's astra released on 2026?. On August 1, 2026, OpenAI publicly disclosed "Astra," describing an internal version of Astra as its "next major model." You can read more about that here: https://openai.com/index/ten-advances-in-mat…
Methodology
Sports-specific comparison page for OpenAI's Astra released on 2026?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.
Resolution & payout
Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.
FAQ
- Are prediction markets better than sports betting?
- Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.
- Which sports markets are available?
- Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.
- How fast do sports winnings settle?
- Once the official league outcome is logged in the UMA Oracle (typically 1-2 hours after the final whistle), Polymarket's smart contract triggers USDC payout. To your wallet within minutes.
- What's the difference between match odds and outright odds?
- Match odds cover a single game ("Bayern beats BVB"). Outright odds are long-term aggregates ("Bayern wins the league"). Outright markets have deeper liquidity; match markets have faster resolution.
- Can I import form data and lineups?
- This page shows the live Polymarket quote as an implied probability. Form data and lineups must be researched separately via sports data providers (e.g. Soccerway, ESPN, FBref) — we surface the market probability, not the sport analysis.
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