GPT-5.6 released by 2026?

Platform comparison

Active sub-markets

Market context

OpenAI is preparing to launch GPT-5.6 to the general public by late June 2026, with internal confirmation that the model represents a meaningful improvement over the current GPT-5.5 flagship, though no official system card or API string has been published yet[1][2]. While the settlement window for this prediction market extends to July 2026, the underlying real-world event is a near-term release expected within days, creating a stark divergence between the market’s current 0% implied probability and the 83–89% consensus priced on Polymarket for a June 22–28 launch[1][2].

Historical release patterns show OpenAI maintains a roughly six-week cadence between flagship models, with GPT-5.4 arriving in March, GPT-5.5 in April, and GPT-5.6 tracking for late June[2][4]. This rhythm mirrors the progression from GPT-5.1 to GPT-5.2, where internal routing logs first surfaced the next model’s name before public announcement, a pattern already visible in Codex backend logs for GPT-5.6[2][5]. Traders should note that past canary signals have sometimes persisted for months without immediate rollout, meaning backend visibility alone is not load-bearing evidence of imminent public availability[5].

Key catalysts to monitor include OpenAI’s upcoming live stream, where the model may be officially announced, and subsequent updates to Codex backend logs that would confirm a public version bump[6]. The Information reported on June 10 that chief scientist Jakub Pachocki described GPT-5.6 as a meaningful improvement, suggesting late-stage preparation, but OpenAI has not confirmed a date publicly[1][2]. If released, the rollout will likely begin with ChatGPT and Codex before broader API access, following the same staged pattern used for GPT-5.5, which became API-available the day after its ChatGPT launch[1].

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 PolyGram, 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?

PolyGram 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 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.

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, PolyGram triggers a quick verification flow that finishes in minutes.