GPT-5.6 released on 2026?

Platform comparison

Market context

OpenAI has already previewed GPT-5.6 Sol, Terra and Luna on 26 June 2026, but the model remains in limited preview for trusted partners via the API and Codex; general public availability has not been announced, and the current crowd-implied probability of a release before the settlement window ends is 0% YES. This reflects the market’s recognition that preview access is not public release, and that OpenAI has explicitly stated no general-availability date is set yet[1][6].

Historically, OpenAI’s model rollouts have followed a pattern of limited preview followed by broader access within weeks, as seen with GPT-5.5, which shipped three weeks before GPT-5.6 surfaced in Codex logs[2]. Yet markets have repeatedly misjudged release dates this year, and the 89% Polymarket bet on a 30 June public release was ultimately wrong, underscoring that community expectations do not guarantee on-chain outcomes[2]. Traders should watch for a new system card, Codex backend version bumps, and OpenAI’s “coming weeks” expansion announcement, which could signal the shift from preview to public access[2][3].

The key catalysts are OpenAI’s planned expansion to ChatGPT, Codex and the API, and any official confirmation of general availability, which OpenAI has promised “in the coming weeks” but not dated[1][3]. Recent leaks suggest a price war with Anthropic may accelerate rollout, but no public release has occurred as of early July 2026[8]. Conditional tokens on Polygon, settled in USDC, will only resolve YES if OpenAI confirms public access before 31 July 2026, and until that confirmation, the 0% probability remains factually grounded.

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 Scam?, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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 Scam?. 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 Scam? trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.