Claude Mythos 5 access restored by…?

Platform comparison

Market context

Anthropic suspended global access to Claude Mythos 5 and Fable 5 on 12 June 2026 following a US export-control directive, but restored Fable 5 for all customers on 1 July 2026 after the Commerce Department issued a narrowed order. Mythos 5, however, remains restricted to a small set of US organisations defending critical infrastructure, with no general public release announced [1][2]. This partial restoration mirrors the 26 June 2026 precedent when Mythos access was first re-enabled for select US entities while Fable remained blocked, suggesting the current 0% market probability reflects the high bar for expanding Mythos 5 beyond its vetted cybersecurity cohort [3].

Traders should monitor official announcements from Anthropic regarding any expansion of Mythos 5 access to additional US partners, as well as updates on the US Department of Commerce’s stance on dual-use AI models. The settlement window ends 30 June 2026, leaving little time for regulatory shifts; funding rates on BTC/ETH and whale flows into USDC-linked stablecoins may signal market sentiment if a policy change emerges [2][3]. Recent reports confirm Anthropic is actively working with the US government to expand Mythos 5 access, but no timeline for general availability has been provided [2]. Any deviation from the current restricted model would likely trigger immediate on-chain activity in USDC settlement pools, given the contract’s crypto-native mechanics.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reads Claude Mythos 5 access restored by…? on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.

Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.

FAQ

Why USDC and not ETH or USDT?

USDC is the Polygon standard — audited reserves (Circle, monthly attestation), deepest order book, low gas costs. ETH volatility would distort probability quotes; USDT has thinner Polygon liquidity than USDC.

What does a transaction cost on Polygon?

Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.

Can I use Bitcoin directly?

No, Polymarket operates exclusively in USDC on Polygon. You can bridge BTC to USDC via an exchange or bridge service and deposit on Polygon — typically 10-30 minutes processing time.

Which crypto markets exist on Polymarket?

Currently active markets include BTC/ETH/SOL price targets, halving dates, ETF approvals, hard-fork outcomes and Layer-2 TVL thresholds. The list updates weekly; biggest volume sits on BTC and ETH price forecasts.

Are crypto prediction markets taxable in the US?

In the US, prediction market gains are typically treated as ordinary income or short-term capital gains depending on holding period. Consult a tax professional for your specific situation — we cannot provide tax advice.