GPT-5.6 released on 2026?

Platform comparison

Market context

OpenAI has already previewed the GPT-5.6 family on 26 June 2026, yet general public availability remains unconfirmed, leaving the prediction market for a full release at 0% YES despite the settlement window ending in July 2027. This mirrors the pattern seen with GPT-5.5, which also launched via a limited partner preview before broader access arrived weeks later, a delay that historically caused on-chain markets to misprice release timelines until official system cards were published. The current zero probability reflects the market’s caution that a preview announcement does not equate to the public rollout required for settlement, a distinction that has repeatedly invalidated conditional token bets on Polygon when traders conflated early API access with general availability.

Traders should monitor OpenAI’s Deployment Safety Hub for the official GPT-5.6 system card, which typically lands simultaneously with the public release, and track Codex backend logs where version bumps first surface, as seen when the model name initially leaked in May 2026. Recent reports from WaveSpeed AI confirm that GPT-5.6 has already appeared in internal routing logs, suggesting the technical rollout is underway, but OpenAI has explicitly stated no general-availability date has been announced, with broader access to ChatGPT and the API promised only “in the coming weeks” [2][6]. The key catalyst remains the shift from the current restricted partner preview to a self-service programme, a dependency that will likely trigger a sharp repricing of USDC conditional tokens once the announcement is verified.

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 Legit?, 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

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.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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