Will Anthropic’s valuation hit … by December 31?

Platform comparison

Market context

Anthropic’s private market valuation must reach the listed threshold by 31 December 2026, as measured by Nasdaq Private Market’s daily NPM Price, to resolve this prediction market as “Yes”. Current crowd-implied probability sits at 12% YES, reflecting skepticism despite the company’s rapid pre-IPO ascent.

Historical benchmarks show private tech valuations can swing sharply in short windows: Anthropic’s NPM price hit $1.14T in July 2026, already 18% above its Series H-1 round of $965B, while Polymarket’s even-odds 2026 target is $1.9T—65% higher than today’s figure[2]. A $2.0T mark is currently a 43% bet, up four points in a month, suggesting the 12% probability on this specific threshold may be conservative relative to platform divergence[2].

Traders should monitor upcoming funding announcements, partnership deals with major cloud providers, and any NPM data updates released at 1:00 PM ET the following day, as these directly feed resolution[1][2]. Polymarket, which uses NPM as its sole resolution source, offers 0% fees and no KYC up to $1,500, whereas Kalshi requires US-only KYC and charges up to 7% per trade, with resolutions based on mixed sources including SEC filings rather than pure NPM data[4][6]. Betfair and Smarkets impose 2–5% commissions and full KYC from the first trade, creating a clear fee and access split across platforms for this event[6].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We read Will Anthropic’s valuation hit … by December 31? 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.

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.

What about Smarkets as an alternative?

Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.

Which platform is accessible globally?

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