Pronóstico: Claude Mythos 5 access restored by…?

Platform comparison

Market context

Anthropic has officially restored access to Claude Mythos 5 for a select group of US organisations responsible for defending critical infrastructure, following a narrowed directive from the US government. This development directly contradicts the current crowd-implied probability of zero per cent on the Polymarket contract, which prices the outcome as impossible despite the company’s public announcement on 2 July 2026 confirming redeployment to vetted partners.

Historical precedents in US export control adjustments show that initial suspensions are frequently reversed once the Commerce Department issues a refined directive, as seen with the restoration of Claude Fable 5 on 1 July 2026 for all customers. The market’s pricing appears to ignore this pattern, failing to account for the fact that Mythos 5 and Fable 5 are the same underlying model packaged differently, with the only distinction being the removal of specific safety classifiers for cyberdefenders.

Traders should monitor official announcements from Anthropic regarding the expansion of access beyond the initial infrastructure partners, as well as updates on the trusted access programme for biomedical researchers. The on-chain mechanics on Polygon, using USDC and conditional tokens, will settle based on whether any previously rescinded US client regains access by the settlement deadline of 30 June 2026. Recent reporting from Constellation confirms the government’s approval for redeployment, suggesting the current zero probability is a significant mispricing of the event.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Argentina, which mirrors the Polymarket order book directly.

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 Argentina. 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.

Do I need to KYC for this market?

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