Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi Fees) Pick polygram.ink (preferred broker) |
99% | 1% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Place a position → |
Polymarket (direct) polymarket.com |
99% | 1% | 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 |
|---|---|
| December 31 | 99% |
| October 31 | 98% |
| August 31 | 95% |
| July 31 | 85% |
| July 24 | 50% |
| July 22 | 4% |
| July 17 | 0% |
| July 16 | 0% |
Market context
Anthropic’s next Claude Opus model must be publicly accessible before the end of 2026 to resolve this market as YES, with the current crowd-implied probability sitting at 96%. The baseline for this assessment is Claude Opus 4.8, released on 28 May 2026, which serves as the current general-purpose flagship for coding and agentic workflows[2][4]. Historical release cadence in 2026 shows a new flagship arriving roughly every six to eight weeks, suggesting the next Opus variant should emerge within weeks rather than months[3]. Given that only two months remain in the settlement window and the last major Opus launch occurred in late May, the timeline aligns tightly with the 96% probability, assuming no regulatory or export-control disruptions similar to the June suspension of Fable 5 and Mythos 5[3].
Traders should monitor Anthropic’s official announcements for a point-bump Opus refresh, as the most likely next move is not a brand-new generation but a safeguarded refresh of the current Opus line[3]. Key catalysts include any confirmation of a Claude Opus 4.9 or 5.0 release, particularly if tied to the restoration of previously suspended Mythos-class models[3]. Programmatic approaches to this market would involve scraping Anthropic’s news feed and API changelog for the string “Opus” paired with a version number, then triggering conditional orders if a public beta or open release is detected before December 31[3]. With the 2026 cadence established and no confirmed next model as of late June, the window for a qualifying launch remains narrow but highly probable[3].
Methodology
We track Next Claude Opus released by 2026? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.
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.
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 Fees. 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.
- 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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