Claude Fable 5 restored for US customers by…?

Platform comparison

Market context

On 12 June 2026, the US government issued an export control directive ordering Anthropic to suspend all access to Claude Fable 5 and Claude Mythos 5 for foreign nationals, forcing the company to abruptly disable both models globally to ensure compliance[1][5]. Anthropic stated the directive stemmed from concerns over a potential jailbreak technique and that the suspension was not permanent, committing to restore access as quickly as possible[1][9].

Historical precedents for export control suspensions in technology show that such measures are typically temporary, often resolved within weeks once companies demonstrate compliance or clarify misunderstandings with regulators[1]. The current 0% implied probability on Polymarket reflects a stark divergence from Kalshi, where decimal odds might better capture the low but non-zero chance of restoration, while Betfair’s fee structure could penalise small speculative positions more heavily than Smarkets’ lower commission model[1].

Traders should monitor official announcements from Anthropic regarding compliance progress or any new directives from the US government, as Reuters reported the order was based on national security concerns[4]. Key dependencies include whether Anthropic can isolate access for US-only users or if a software patch can neutralise the reported jailbreak, with Forbes noting the suspension remains active pending further developments[8].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We read Claude Fable 5 restored for US customers by…? from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live mid is the canonical probability; the side-by-side columns benchmark fees, KYC, settlement currency and deposit rails so you can choose the venue that fits your jurisdiction and trade size.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.

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.

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

Which platform has the deepest liquidity?

Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.

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.