Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi vs Polymarket) Pick polygram.ink (preferred broker) |
32% | 68% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
32% | 68% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| July 24 | 32% |
| No release by July 31 | 17% |
| July 28 | 15% |
| July 23 | 11% |
| July 30 | 11% |
| July 27 | 10% |
| July 29 | 3% |
| July 25 | 1% |
| July 26 | 1% |
| July 31 | 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 is the event to watch, and the market is currently pricing in a **0%** chance of a new qualifying model before the settlement window closes. That is notable because Anthropic has kept the Opus line active: the company’s model page says Claude Opus was updated on **28 May 2026**[1], and its own news pages show prior Opus releases landing as generally available products across Claude, the API, and cloud partners[2][5][8][9].
Recent release cadence is the main historical reference point. Opus 4.7 arrived on **16 April 2026** and Opus 4.8 on **28 May 2026**, which is a relatively fast upgrade cycle for a flagship tier[5][6][7]. On that basis, a 0% implied probability looks more like a market view that the current naming cycle is exhausted or that any late-cycle launch would slip beyond the deadline, rather than a statement that Anthropic has stopped shipping Opus models altogether[2][5]. If sportsbook-style lines and broader analyst chatter are compared with prediction-market pricing, the key question is whether others still expect an official “Opus” label before 31 July; any large gap would mainly reflect different assumptions about launch timing, not product capability.
Traders should watch for any Anthropic announcement that explicitly uses the **Opus** name, plus updates to the Claude model docs and rollout notes, because the contract only resolves on a publicly accessible release, not a closed beta[1][12]. Distribution signals matter too: the last few Opus releases were posted with immediate availability across Claude products and cloud platforms, so a launch accompanied by API, Bedrock, Vertex AI, or Foundry availability would be the strongest confirmation[2][5][9]. The most relevant short-term catalysts are therefore an official blog post, a model page change, or partner-platform listing rather than general product news.
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Kalshi vs Polymarket, which mirrors the Polymarket order book directly.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
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 Kalshi vs Polymarket. 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.
- 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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