Claude Mythos 5 access restored by…?

Platform comparison

Market context

In April 2026, Anthropic launched "Claude Mythos 5" for approved partners under Project Glasswing, only to suspend access on 12 June following a US government export-control directive. The suspension was abrupt but not permanent; by late June, the US lifted those controls, and Anthropic began restoring access to a limited set of US organisations, with AWS, Google Cloud and Microsoft Foundry re-enabled by 1 July[1][4].

Historical precedents show that regulatory blocks on frontier models are often temporary when national-security concerns are addressed; the current 0% implied probability reflects market uncertainty about full reinstatement rather than a permanent ban. Notably, Mythos 5 remains active for roughly 100 vetted firms, confirming the model is suspended, not deprecated[2][3]. On platforms like Polymarket, traders see decimal odds (e.g. 0.00), whereas Kalshi and Betfair quote implied probabilities (0%) and differ sharply on fees (Polymarket 2% vs Kalshi 0–7%) and KYC (Kalshi requires US identity verification, Betfair does not)[1].

Traders should monitor Anthropic’s official announcements on expanding the partner list beyond the initial 100, plus AWS and Google Cloud update logs for broader access rollouts[1][4]. A key catalyst is the US government’s formal confirmation that export controls are fully lifted for all customers, not just a subset[5]. Recent reporting from Reuters confirms the White House directive was the sole blocker, and its removal is the primary dependency for full reinstatement[6]. Watch for any delay in Microsoft Foundry integration, which remains pending as of early July[1].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Claude Mythos 5 access restored by…? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Robinhood Prediction Markets, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

FAQ

Polymarket vs Kalshi — which is better?

Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.

Is Betfair a Polymarket alternative?

Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.

Which platform is accessible globally?

Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Robinhood Prediction Markets has a different geo footprint and routes to Polymarket's order book at 0% fees.

Are all these platforms regulated?

No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Robinhood Prediction Markets offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.