Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Tax UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| December 31 | 100% |
| July 31 | 100% |
| August 31 | 100% |
| July 10 | 100% |
| July 17 | 100% |
| July 6 | 100% |
| July 8 | 100% |
| July 3 | 99% |
| July 2 | 98% |
| July 1 | 94% |
| June 15 | 0% |
| June 22 | 0% |
| June 17 | 0% |
| June 16 | 0% |
| June 26 | 0% |
| June 19 | 0% |
| June 18 | 0% |
| June 29 | 0% |
| June 30 | 0% |
Market context
On 12 June 2026, the US government issued an export control directive citing national security concerns, forcing Anthropic to abruptly disable access to Claude Fable 5 and Claude Mythos 5 for all customers worldwide. The directive specifically barred foreign nationals, including Anthropic’s own foreign employees, from accessing the models, but because real-time segmentation of user nationality is impractical at scale, the company opted for a global shutdown to ensure compliance.
Historical precedents in frontier technology show that when export controls are invoked on national security grounds, restoration is rare unless the underlying threat is disproven or a diplomatic workaround emerges. In this case, the stated trigger was a reported AI jailbreak involving codebase analysis, yet Anthropic noted the capability is widely available elsewhere and that the government provided only verbal evidence. Given the current crowd-implied probability of 0% YES, the market reflects a consensus that regulatory barriers will persist through the settlement window ending 2 July 2026.
Traders should monitor for any official statements from Anthropic regarding legal challenges to the directive, updates from the US Commerce Department on export control scope, or announcements of a substitute model confirmed as functionally identical to Fable 5. Recent reporting from Forbes confirms the directive remains active with no indication of reversal, while Anthropic’s own statement indicates they are working to restore access but face no timeline. Accessibility for US customers under a “no-KYC up to $1,500” threshold remains irrelevant here, as the ban applies universally regardless of transaction size or verification status. German GlüStV and US CFTC frameworks do not override federal export controls, which remain the decisive factor.
Methodology
This overview of Claude Fable 5 restored for US customers by…? reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.
Resolution & payout
On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.
FAQ
- Is Polymarket legal in my country?
- Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Polymarket Tax UK has a different geo footprint.
- How are winnings taxed?
- Tax treatment varies by jurisdiction. In most countries, prediction market gains are treated as ordinary income or capital gains. We cannot provide tax advice — consult a tax professional for your specific situation.
- Can I trade anonymously?
- Pseudonymously, yes — up to the KYC threshold. Polymarket Tax UK stores an email address and wallet addresses rather than a legal name. Over $1,500 lifetime volume triggers KYC, after which identity is no longer anonymous.
- What happens during a tax audit?
- You're responsible for documenting your trades. Polymarket Tax UK exports a full transaction history (CSV/PDF) for tax reporting. In an audit you'll need to present these documents.
- Is there a withdrawal cap?
- No platform-side cap. You can withdraw any amount provided KYC is complete. SEPA bank withdrawals over €15,000 trigger additional anti-money-laundering checks (statutory obligation for all platforms).
Trade Claude Fable 5 restored for US customers by…? on Polymarket Tax UK
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