GPT-5.6 released by 2026?

Platform comparison

Active sub-markets

Market context

The real-world event at hand is whether OpenAI will make its GPT-5.6 model available to the general public before the end of July 2026. A YES share in this market pays out if the model is released widely by the deadline, while a NO share pays out if it is not; currently, the crowd-implied probability sits at 0% for YES, suggesting most traders doubt a public launch will occur. This stark contrast with external signals—such as Polymarket pricing the June window at 83–89%—highlights how prediction markets can diverge from broader community expectations when official confirmation is absent.

Historically, OpenAI’s flagship model cadence has compressed to roughly six weeks, with GPT-5.4 released on 5 March, GPT-5.5 on 23 April, and GPT-5.6 now tracking for late June [1]. A backend canary test already surfaced GPT-5.6 in Codex routing logs, indicating the model exists as a runnable artifact [2]. Yet, despite this technical readiness, a general release has not been announced, and recent reports suggest access is being restricted under U.S. government direction [4]. This pattern mirrors earlier delays where technical capability outpaced public availability, framing the current 0% probability as a reflection of regulatory uncertainty rather than development stagnation.

Traders should monitor OpenAI’s official research page for a system card and public version bump in Codex logs, which typically accompany flagship releases [2]. Key catalysts include any announcement from chief scientist Jakub Pachocki or CEO Sam Altman regarding the model’s rollout timeline, as well as updates on the company’s IPO preparations, which may influence release decisions [1]. With a general release planned for “the coming weeks” according to VentureBeat, the window remains open, but the lack of official confirmation keeps the market’s YES probability at zero [8]. Watch for any shift in U.S. government restrictions, as these could be the decisive factor determining whether GPT-5.6 reaches the public before the settlement deadline.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track GPT-5.6 released by 2026? on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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?

On Prediction Market UK, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Prediction Market UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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.

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.