When will GPT-5.6 be released?

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Active sub-markets

Market context

OpenAI has not publicly confirmed a GPT-5.6 launch, but the release pattern of the GPT-5 line has become noticeably faster, which is the main reason traders are treating a late-June debut as plausible. GPT-5 arrived in August 2025, GPT-5.5 followed in late April 2026, and OpenAI’s own release notes show GPT-5.5 Instant was updated again on 28 May, suggesting the company is still actively tuning and expanding the current generation rather than waiting for a long cycle reset.[6][8]

Comparable cases point to a model family moving in short, staged steps rather than big annual jumps. OpenAI’s GPT-5.5 launch rolled out across ChatGPT, Codex and the API, with separate variants such as GPT-5.5 Pro and later Instant updates, so a GPT-5.6 release could first appear in one surface before broader availability.[6][8] Third-party reporting and timeline tracking also place GPT-5.6 after GPT-5.4 and GPT-5.5 in a roughly six-week cadence, which is why the market can sit near the end of the settlement window even without an official announcement.[1][3]

The key catalysts are an OpenAI newsroom post, a model release note, or a visible change in the API model index; those are the clearest signals that public availability has begun.[2][8] Traders should also watch for rollout clues in ChatGPT, Codex and developer docs, because OpenAI has previously staggered access across product tiers and the API rather than switching everything on at once.[6][8] Reports of backend routing activity around a GPT-5.6 label have added to expectations, but they are still only indicative until OpenAI confirms a general release.[1][4]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track When will GPT-5.6 be released? 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

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

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 Sport Prediction?

Zero. Sport Prediction 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.

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.