GPT-5.6 released on 2026?

Platform comparison

Market context

OpenAI has already announced the GPT-5.6 family on 26 June 2026, yet a full public rollout was deferred at the US government’s request, limiting initial access to a small group of vetted partners. The market currently prices the “YES” outcome at 0%, reflecting that no general-availability date has been confirmed and that the preview remains restricted to API and Codex for trusted organisations, excluding individual consumers and ChatGPT users entirely[1][3][6].

Historical patterns show that Polymarket has often misjudged model release dates, even when community sentiment is strong; for instance, the platform previously priced an 89% chance of a 30 June public release after a single Codex log entry surfaced GPT-5.6, yet broader access remained limited[2]. Past launches like GPT-5.5 followed a similar trajectory: a preview announcement, a system card, and delayed general availability, suggesting that the 0% probability here is not an anomaly but a realistic assessment of the current uncertainty[2][4].

Traders should monitor three key catalysts: the official system card for GPT-5.6 (expected to coincide with broader release), Codex backend logs where version bumps first appear, and any public statements from OpenAI regarding expansion to ChatGPT and self-service API access[2][4]. Reuters reported on 26 June that the delay was government-driven, so future announcements may hinge on regulatory clearance or a shift in US policy on frontier AI access[3]. Until OpenAI confirms a general-availability date, the market’s 0% pricing remains grounded in the absence of concrete timelines.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track GPT-5.6 released on 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

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 PolyGram. 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 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?

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

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.