Pronóstico: GPT-5.6 released by 2026?

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Active sub-markets

Market context

OpenAI is expected to release GPT-5.6 to the general public by late June 2026, a timeline that contradicts the current 0% crowd-implied probability on the contract titled “GPT-5.6 released by...?”. While the settlement window ends in July 2026, multiple credible sources indicate the model is already in backend canary testing with real traffic, and official announcements are anticipated within days.

Historical release patterns from GPT-5.1 through GPT-5.5 show a consistent six-week flagship cadence, with GPT-5.5 launched on 23 April and GPT-5.6 now tracking for late June. Polymarket volume exceeds $1M, with the June 22–28 window priced at 83–89% probability, reflecting strong community consensus that the release is imminent despite the current 0% pricing on this specific contract. Traders should watch for OpenAI’s official release notes, which are expected to confirm public availability, alongside any updates to the ChatGPT interface or API documentation. Recent leaks from The Information and internal routing logs in Codex backend support a Thursday, 25 June release, with chief scientist Jakub Pachocki describing GPT-5.6 as a “meaningful improvement” over GPT-5.5, focusing on agentic workflows and a 1.5M-token context window.

The on-chain mechanics of this market—settling in USDC on Polygon via conditional tokens—mean that a public release before 31 July 2026 will resolve the contract to “Yes”. With GPT-5.6 already visible in production logs and a clear six-week cadence established, the 0% probability appears misaligned with the technical reality. Traders monitoring the June 22–28 window should note that Polymarket’s 89% pricing for a June 30 release is a real signal of community expectations, even if markets have occasionally been wrong about exact dates this year. The key dependency is OpenAI’s official confirmation, which is widely anticipated within the next few days.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Pronóstico: GPT-5.6 released by 2026? across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at PolyGram — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

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

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 it cost to trade on PolyGram?

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

Do I need to KYC for this market?

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