Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
29% | 71% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
29% | 71% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| July 24 | 29% |
| No release by July 31 | 16% |
| July 28 | 14% |
| July 27 | 11% |
| July 30 | 11% |
| July 23 | 8% |
| July 29 | 3% |
| July 31 | 2% |
| July 25 | 1% |
| July 26 | 1% |
| July 15 or prior | 0% |
| July 16 | 0% |
| July 17 | 0% |
| July 18 | 0% |
| July 19 | 0% |
| July 20 | 0% |
| July 21 | 0% |
| July 22 | 0% |
Market context
Anthropic’s next public **Claude Opus** release has not yet landed in the market data reflected by the latest official Opus page, which shows Opus 4.8 as the current entry and gives a release date of 28 May 2026.[1][3] That makes the 0% crowd price easier to read as a timing call than a view on whether another Opus update will exist at all: the contract only pays if Anthropic publicly launches a model explicitly named Opus before the settlement deadline.
Recent comparable launches suggest Anthropic has been iterating Opus quickly, but not on a fixed cadence. Opus 4.7 went generally available on 16 April 2026, and Opus 4.8 followed on 28 May 2026, roughly six weeks later.[5][6][7] Earlier Opus releases were also shipped as full public availability across the Claude app, API, and major cloud partners, which matters for this market because a closed test would not qualify.[5][8] For traders, the clean comparison is that the window to see another named Opus before 31 July is short, but the company has shown a willingness to refresh the line within weeks rather than quarters.[3][5]
The main catalysts are Anthropic product posts, API/model-name updates, and partner platform listings, since the contract settles only on a general-public launch date.[1][3][10] On-chain, the event settles in USDC, so the market can reprice quickly if an announcement lands near quarter-end and BTC or ETH risk sentiment is broadening or fading; that can affect liquidity and whale positioning even though it does not change the binary outcome. In practice, watch for a new Opus model ID, a “available today” announcement, or inclusion on Claude, Bedrock, Vertex AI, or Foundry, because those were the distribution channels used for prior qualifying releases.[3][5]
Methodology
Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — sit alongside as off-chain reference points so you can see how the contract translates across regulatory and settlement regimes.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
FAQ
- What does a transaction cost on Polygon?
- Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.
- Can I use Bitcoin directly?
- No, Polymarket operates exclusively in USDC on Polygon. You can bridge BTC to USDC via an exchange or bridge service and deposit on Polygon — typically 10-30 minutes processing time.
- How does UMA secure the resolution?
- The UMA Optimistic Oracle uses a bond system: a proposer posts a bond, a two-hour challenge window opens. On dispute the losing side forfeits the bond — financial incentive for honest resolution.
- How volatile are crypto prediction markets?
- Crypto markets react to spot prices — a 5% BTC move typically shifts a "BTC above X by date" market 10-20%. Polymarket crypto market liquidity is usually six-figure USD, sufficient for active trading.
- Which crypto markets exist on Polymarket?
- Currently active markets include BTC/ETH/SOL price targets, halving dates, ETF approvals, hard-fork outcomes and Layer-2 TVL thresholds. The list updates weekly; biggest volume sits on BTC and ETH price forecasts.
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