Pronóstico: GPT-5.6 released by 2026?

Platform comparison

Active sub-markets

Market context

OpenAI is preparing to release GPT-5.6 to the general public in late June, a move described by chief scientist Jakub Pachocki as a "meaningful improvement" over the current GPT-5.5 flagship[1]. This upcoming launch targets a 1.5M token context window and emphasises agentic workflows rather than single-turn chat gains, aligning with a consistent six-week cadence between flagship models since GPT-5.4 in March[1]. While Polymarket currently prices the June 22–28 window at 83–89% probability, reflecting strong community consensus, on-chain history shows markets have frequently misjudged model release dates this year[1][3]. The conditional tokens for this contract, settled in USDC on Polygon, are betting on a public rollout rather than a closed beta, which is the strict resolution criteria for a "Yes"[4].

Traders should monitor OpenAI’s official newsroom and Codex backend logs, where the model name first surfaced as a routing entry before vanishing from session files[3]. A confirmed system card and deployment safety hub entry, mirroring the GPT-5.5 launch pattern, will likely accompany the public release[3]. Recent leaks suggest a potential price cut to compete with Anthropic, alongside major improvements in reasoning and vision capabilities[5]. The primary dependency is the completion of a redesigned reward audit pipeline following the "goblin" incident, which compresses the release cycle but introduces technical risk[3]. With the settlement window ending in July 2026, the market remains highly sensitive to any delay in the kindle-alpha staging clearance, which has already passed[8].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Pronóstico: 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

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

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'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.

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.