Breaking

Polymarket Opens Market Predicting GPT-5.6's Release Date

June 24, 2026 at 02:49 EDT

Foundation Models

The prediction-market platform Polymarket opened a new market on June 23, 2026 (US Eastern Time) titled "GPT-5.6 released on...?", letting users trade on when OpenAI's next model, GPT-5.6, will become publicly available. The market resolves once an official announcement or public access is confirmed.

June 23, 2026 · Prediction Markets

Bettors Bet on Late July for GPT-5.6

A new Polymarket market forecasting the public release of OpenAI's GPT-5.6 has shifted hard from a June expectation to a late-July lead — with a June arrival now all but priced out.

37%

implied odds for July 29 — the frontrunner date

date choices offered in the "released on…?" market

~90%

say not released by June 28 — June is out

"Released on…?" — leading dates

Implied probability per exact-date option

37%

July 29

36%

July 18

low

Before Jun 24

Takeaway: the two late-July dates dominate the field — a June release barely registers.

Released by…?

~$1.23M

trading volume · July 31 at 95%, July 24 at 93%

When released?

~$650K

trading volume · "Not released by 6/28" at ~90%

Rumored — unconfirmed, no model card

GPT-5.5 context

~1M

tokens

→

GPT-5.6 rumored

1.5M

tokens

Also talked about: larger reasoning budget, first MP4/WebM video understanding, Playwright browser automation, and a redesigned alignment pipeline. Rollout expected to hit ChatGPT Pro first, then the API.

Optimists

A 1.5M-token window could sharply improve large-codebase handling and long-term agent memory.

Skeptics

Leaks are unverified; expanding context alone may hit a ceiling, and the odds shift flags real delay risk.

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