Claude Mythos 5 access restored by…?

Platform comparison

Market context

On 12 June 2026, the US government issued an export control directive forcing Anthropic to suspend global access to both Claude Fable 5 and Claude Mythos 5, citing national security concerns over their advanced capabilities. The suspension was abrupt, disabling both models for all customers regardless of location, while leaving older models like Opus 4.8 unaffected.

Historical precedent from similar US tech export blocks shows that conditional access is often restored once the Commerce Department narrows its directive, as happened with Fable 5 on 1 July 2026, when it was reinstated for all users while Mythos 5 remained restricted to vetted cyberdefenders. This pattern suggests the current 0% probability for Mythos 5 restoration may be overstated, given that the same underlying model has already been partially redeployed to US infrastructure firms following government approval.

Traders should monitor Anthropic’s official announcements and the US Commerce Department’s export control updates, particularly any signals about expanding Mythos 5 access beyond its current Project Glasswing partners. A recent statement from Anthropic confirms they are working closely with the US government to redeploy Mythos 5 to US organisations defending critical infrastructure, with access restoration expected quickly [1]. On-chain, this contract trades on Polymarket via USDC on Polygon, using conditional tokens that resolve based on whether at least one previously rescinded US partner regains access by 2026-06-30.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Claude Mythos 5 access restored by…? 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 Polymarket Scam?. 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'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.

Do I need to KYC for this market?

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