When will GPT-5.6 be released?

Platform comparison

Active sub-markets

Market context

The real-world event is OpenAI’s imminent public release of GPT-5.6, a flagship model tracking a six-week cadence with GPT-5.5 launched in April and GPT-5.4 in March, now expected late June based on backend canary logs already visible in Codex routing systems[1][4]. Traders should note that while the market’s crowd-implied probability sits at 0% YES, Polymarket volume exceeds $1M with the June 22–28 window priced at 83–89% probability, reflecting strong pre-launch consensus outside official channels[1].

Historical release patterns show GPT-5.1 (November 2025), GPT-5.2 (December 2025), GPT-5.4 (March 2026), and GPT-5.5 (April 23, 2026) advancing rapidly, with GPT-5.5 Instant becoming the default in ChatGPT on May 5, 2026[3]. This consistent two-to-three-month cadence, combined with the visible canary test entry, strongly suggests GPT-5.6 is in active development and likely to arrive by mid-to-late June, aligning with summer 2026 projections[5].

Key catalysts include OpenAI’s official announcement, the appearance of a GPT-5.6 model ID in the API, and updates to Codex logs where the version bump will first surface publicly[4]. Watch for a new system card and deployment safety hub entry, which typically accompany flagship releases, and monitor Jakub Pachocki’s internal communications, as he recently described the model as a “meaningful improvement” over GPT-5.5[1]. Regulatory accessibility remains constrained by German GlüStV implications and US CFTC reach, though “no-KYC up to $1,500” allows limited participation for traders without full identity verification, enhancing market access for this specific event.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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

Is this market available outside the US?

Polymarket KYC 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.

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 does it cost to trade on Polymarket KYC UK?

Zero. Polymarket KYC UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket KYC UK triggers a quick verification flow that finishes in minutes.