Next Claude Sonnet released by 2026?

Platform comparison

Market context

The real-world event is whether Anthropic launches its next Sonnet model for general public access before 31 July 2026. With the crowd pricing this at 94% yes, the market treats the release as nearly certain, but power-users should verify this programmatically by monitoring API availability endpoints and checking for model-string updates in production pipelines rather than relying on sentiment alone.

Historically, Anthropic has maintained a tight cadence for Sonnet releases: Claude 3.5 Sonnet arrived in June 2024, Claude 3.7 Sonnet in February 2025, and Claude Sonnet 4.6 in February 2026 [1][3]. The pattern shows roughly six-month intervals between major Sonnet upgrades, with the latest Opus 4.8 released in May 2026 suggesting a Sonnet 4.7 or 5.0 could follow within the next quarter [3]. This cadence supports the high probability, though the June 2026 deprecation of Sonnet 4 and Opus 4 [4] indicates Anthropic is actively retiring older versions to push users toward newer models, increasing the likelihood of a timely Sonnet launch.

Traders should watch for official announcements from Anthropic’s transparency hub or platform docs, particularly around model-string updates for Sonnet 4.7 or 5.0 [3][9]. A key catalyst is the general availability of Claude Fable 5 on 9 June 2026 [7], which may signal parallel Sonnet releases. Dependencies include the knowledge cutoff date (May 2025 for Sonnet 4.6 [9]) and the need for public API access, as Mythos 5 remains limited to approved customers [7]. Monitoring the Claude Platform for new Sonnet identifiers will provide the earliest programmatic confirmation.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Bot UK, which mirrors the Polymarket order book directly.

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 Polymarket Bot 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.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket Bot UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.