Next Claude Sonnet released by 2026?

Platform comparison

Market context

Anthropic has just deprecated its original Claude Sonnet 4 and Opus 4 models on 15 June 2026, creating immediate pressure for a successor to be publicly accessible before the market’s July 2026 settlement deadline [5]. This deprecation is not a soft sunset; API calls using pinned identifiers now fail, forcing production applications to migrate or break [5]. The crowd-implied 100% probability reflects the operational necessity of a new Sonnet variant arriving to replace the retired infrastructure, rather than mere speculation.

Historical release patterns show Sonnet models typically follow major Opus launches within months, with Sonnet 4.6 arriving in February 2026 after Opus 4.7 in April 2026 [3]. The latest major release, Opus 4.8, dropped on 28 May 2026, positioning a Sonnet 4.7 or 5.0 launch for late summer or early autumn [3]. Community speculation previously predicted a Q1 2026 arrival for Claude 5, but the accelerated pace suggests an updated Sonnet variant could emerge sooner to fill the gap left by the June deprecation [2].

Traders should monitor Anthropic’s official announcements for a Sonnet 4.7 or 5.0 release, particularly given the tight dependency on replacing the deprecated API endpoints [5]. The release of Fable 5 on 9 June 2026 indicates Anthropic is actively rolling out new model families, increasing the likelihood of a Sonnet update before July [8]. With the settlement window ending 31 July 2026, the operational void created by the deprecation makes a public Sonnet launch before this date a near-certainty for business continuity [5].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Next Claude Sonnet released by 2026? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Kalshi Fees, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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 Kalshi Fees. 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 does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.