66% — Will OpenAI release GPT-6 before Jun 1, 2026
Leader: Before 2027 at 66% · Kalshi 66% · 3 contracts · $26K volume · medium confidence
Updated 2026-09-01 13:25:12 UTC

Tracks the leading outcome in a winner-take-all prediction market set with 3 outcomes.

Why this matters:
Markets are pricing an 84% probability that OpenAI releases GPT-5.6 before July 31, 2026, with the most likely window being early-to-mid July. The pricing reflects strong confidence in a release within the next month, while simultaneously showing very low probability (18%) for GPT-6 before October. The current level likely reflects OpenAI's historical release cadence, any public statements about upcoming model timelines, and the fact that we are already late June. The main upside driver would be confirmation of an imminent announcement; downside pressure could come from delays or pivot toward different product releases. Resolution hinges on whether OpenAI makes an official release announcement by July 31, 2026, with specific attention to the July 10-15 window where contract prices jump notably.

Key factors:
- Probability declines sharply as deadlines extend (60% by Jul 10 → 84% by Jul 31), suggesting markets expect a release in early-to-mid July if it occurs at all
- GPT-6 contracts trade at only 18% before October, implying minimal near-term expectation for a major generation leap versus incremental versions
- High trading volume on the Jul 15 contract ($7,792 in 24h) indicates active disagreement or information flow about timing in the immediate window
- The gap between 84% (Jul 31) and 66% (runner-up outcome) suggests meaningful uncertainty about whether this resolves to GPT-5.6 specifically versus a different release category
- July 7 contract at only 11% implies markets assign low probability to an extremely imminent release within the next week

Contracts:
- Will OpenAI release GPT-6 before Jan 1, 2027?: Before 2027 — 66¢ Kalshi $834 (weight 3%)
- Will OpenAI release GPT-6 before Nov 1, 2026?: Before Nov 1, 2026 — 53¢ Kalshi $4K (weight 15%)
- Will OpenAI release GPT-6 before Oct 1, 2026?: Before Oct 1, 2026 — 44¢ Kalshi $21K (weight 82%)

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## Methodology

SimpleFunctions aggregates live YES-side prices from Kalshi and Polymarket contracts bound to this question. For binary topics the headline is the liquidity-weighted mid-price (weight = log(1 + 24h volume) × freshness, where freshness is 1.0 if updated <24h, 0.7 if <7d, 0.4 otherwise). For multi-outcome (winner-take-all) topics the headline is the current leader's price — disjoint outcomes are never arithmetically averaged. Snapshots refresh every 5 minutes during market hours.

## SF Signal

- SF Index, regime, and 30d Brier calibration are computed separately and surfaced at https://simplefunctions.dev/admin/calibration.
- No SimpleFunctions index / regime / calibration signal is bound to this topic yet — the headline above is market-derived only.

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*Last verified: 2026-09-01T13:20:50.177Z*

By SimpleFunctions — https://simplefunctions.dev/

Cite as: "66% per prediction markets (SimpleFunctions, September 2026)"
Canonical: https://simplefunctions.dev/answer/gpt-open
Full data: https://simplefunctions.dev/api/public/query?q=Will%20OpenAI%20release%20GPT-6%20before%20Jun%201%2C%202026
Provider: SimpleFunctions — https://simplefunctions.dev