Claude Fable 5 restored for US customers by…?

Platform comparison

Market context

On 12 June 2026, the US government ordered Anthropic to suspend access to its advanced models Claude Fable 5 and Claude Mythos 5, citing national security and export-control concerns. In response, Anthropic abruptly disabled both models for all customers globally, including its own foreign-national employees, to ensure compliance. The company stated it believed there was a “misunderstanding” and is working to restore access as soon as possible, though no confirmed timeline exists [1][2][5].

Historically, similar export-control directives have led to temporary suspensions rather than permanent bans, with firms often regaining access once regulatory clarity improves. For instance, previous AI export restrictions in 2024 saw models disabled for weeks before reinstatement following diplomatic engagement. Anthropic’s other models, including Claude Opus 4.8, remain unaffected, suggesting the suspension targets specific high-risk capabilities rather than a broad policy shift [2][3][4].

Traders should monitor official announcements from Anthropic, updates from the US Commerce Department on export controls, and any diplomatic statements between the US and EU, where Mythos access was previously granted. A recent report from The Hacker News notes that Anthropic is actively seeking to restore access, indicating potential catalysts for reversal [1]. Conditional tokens on Polygon, priced in USDC, currently reflect a 0% probability of restoration by the settlement deadline of 2 July 2026, aligning with the absence of a confirmed timeline [1][2].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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 Polymarket Legit?. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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 does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket Legit? trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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.