Next Claude Sonnet released by 2026?

Platform comparison

Market context

The real-world event at the heart of this market is whether Anthropic will launch its next Claude Sonnet model for general public use before the end of July 2026. A YES share means you believe the model will be available by that date; a NO share means you expect it will not. This specific market resolves to YES if any model explicitly named Sonnet—such as Sonnet 4.7, 5.0, or 5—is publicly accessible before 23:59 ET on 31 July 2026.

Historical release patterns suggest the current 92% crowd-implied probability is well grounded. Anthropic has typically updated Sonnet every six to eight months: Sonnet 3.5 launched in June 2024, Sonnet 3.7 in February 2025, and Sonnet 4.6 in February 2026[1][4]. With the latest major Sonnet release only four months ago, a follow-up by mid-2026 aligns with their established cadence, though the recent deprecation of Sonnet 4 on 15 June 2026 may accelerate the need for a successor[5].

Traders should monitor Anthropic’s official announcements, API update logs, and developer roadmaps for clues about a new Sonnet launch. The release of Opus 4.8 in May 2026 indicates active development across the family, and community speculation points to a potential Sonnet 5 in early 2026[2][3]. Any mention of a Sonnet variant in upcoming press releases or platform documentation would be a strong catalyst, while delays in related model updates could signal a shift in timing.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Next Claude Sonnet released by 2026? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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 Prediction Market UK. 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.