# Current state
As of the latest research (~late Aug 2026), OpenAI has not released any product named "GPT-6." Its likely successor family, codenamed "Astra," was only confirmed via an August 1, 2026 research post (not a product launch), and OpenAI has explicitly not decided whether to brand it "GPT-6" or "GPT-5.7." A disclosed "Critical" cybersecurity risk classification (Aug 7, 2026) adds deployment-delay risk. The market closes Oct 1, 2026 — roughly 5 weeks of runway remain as of this research.
# Timeline of key events
- 2023-03: GPT-4 released publicly. (confirmed — Wikipedia)
- 2025-08-07: GPT-5 released publicly, ~29 months after GPT-4. (confirmed — Wikipedia)
- 2025-11: GPT-5.1 released. (confirmed — Wikipedia/claude_news)
- 2025-12: GPT-5.2 released. (confirmed — Wikipedia)
- 2026-02-05: GPT-5.3-Codex released. (confirmed)
- 2026-03-05: GPT-5.4 released. (confirmed)
- 2026-04-23: GPT-5.5 ("Spud") released; reportedly absorbed features widely expected to define "GPT-6" (memory/personalization). (confirmed — Wikipedia, voiceflow.com)
- 2026-07-08/10: GPT-5.6 launched with sub-models Sol/Terra/Luna plus "GPT-Live" voice series; brief dispute over US export/approval status. (reported — multiple outlets)
- 2026-08-01: OpenAI names "Astra" as "our next major model" via research post, not a product announcement. (confirmed — gizmodo.com, emergent.sh)
- 2026-08-07: OpenAI discloses it "cannot rule out" Astra hit the "Critical" cybersecurity threshold under its preparedness framework — a potential deployment gate. (confirmed — emergent.sh)
- 2026-08-17/20: Rumors/leaks suggest Astra could launch "this week"; unclear whether branded GPT-6 or GPT-5.7. No confirmed launch. (rumored — thewincentral.com, geeky-gadgets.com)
# Event
Will OpenAI publicly release a model officially recognized as "GPT-6" (or an equivalent successor to GPT-5, excluding GPT-5.x labels) by September 30, 2026?
# Outcomes to forecast
- Yes
- No
# Kalshi market anchor
No kalshi_direct tool output was provided in this research; the ticker given matches the Polymarket market ID, not a distinct Kalshi listing. Best available live cross-market anchor: **Polymarket YES = 29.5%**, down 6.5pp over 7 days and down 39pp over 30 days, on $294,597 total volume; price has ranged 14%–75.5% over the past 91 days, indicating a sharp collapse from earlier optimism (peak ~75.5%) to current pessimism.
# Sub-question answers
1. **Polymarket price/trend** — Current YES 29.5%, -6.5% (7d), -39% (30d), $294,597 volume, 91-day range 14–75.5%. Trend is strongly downward, consistent with the market pricing in naming/timing slippage (Polymarket_direct).
2. **Altman/OpenAI official statements** — No official GPT-6 announcement exists. OpenAI confirmed a next-gen model codenamed "Astra" on Aug 1, 2026 via research post only; naming (GPT-6 vs. GPT-5.7) is explicitly undecided, and an Aug 7 disclosure of possible "Critical" cybersecurity risk may delay deployment (claude_news, lifearchitect.ai, emergent.sh).
3. **Historical gap base rate** — GPT-3→GPT-4 ≈33mo, GPT-4→GPT-5 ≈29mo; recent regime trending toward longer gaps, not shorter. Blended statistical models put P(any major numbered release within 14 months of GPT-5) ≈0.34; adjusting for ~30% chance the next model is literally branded "GPT-6" (vs. GPT-5.x) yields a base rate of **~0.08–0.12** (code_execution).
4. **Intermediate releases** — Yes: OpenAI shipped GPT-5.1, 5.2, 5.3-Codex, 5.4, 5.5, and 5.6 (with Sol/Terra/Luna sub-models) between Nov 2025 and Jul 2026, strongly indicating continued incrementing rather than an imminent full-number jump (Wikipedia, GDELT).
5. **Competitive/compute signals** — Research provided no specific data on Gemini/Claude/Stargate timing pressure; general competitive AI-boom context noted (OpenAI Wikipedia) but no concrete acceleration/delay signal identified. Gap in evidence.
6. **Other markets** — No dedicated Kalshi GPT-6 market found (kalshi_related returned only tangential OpenAI/Anthropic IPO and US-stake markets); no other Polymarket GPT-6 markets found (polymarket_related: 0 matches). A secondary source (findskill.ai) cited stale mid-April 2026 Polymarket odds (72% by Sep 30) that are far above the current live 29.5%, confirming a large downward repricing since spring.
# Key facts (high-confidence, factual)
1. [Wikipedia] GPT-5 launched Aug 7, 2025, ~29 months after GPT-4 (Mar 2023).
2. [Wikipedia/claude_news] Six GPT-5.x point releases shipped Nov 2025–Jul 2026 (5.1 through 5.6).
3. [emergent.sh/gizmodo] "Astra," the presumed GPT-6 successor, was only announced via research post Aug 1, 2026 — no product, no release date.
4. [emergent.sh] Aug 7, 2026: OpenAI flagged Astra's possible "Critical" cybersecurity classification, a preparedness-framework gate that can delay release.
5. [lifearchitect.ai] OpenAI has not decided whether Astra will be named "GPT-6" or "GPT-5.7."
6. [Polymarket_direct] Current YES = 29.5%, down sharply from a 91-day high of 75.5%.
# Cross-market signals
- Kalshi related: No direct GPT-6 market found; adjacent OpenAI markets (IPO race, US equity stake) show no GPT-6-relevant signal.
- Polymarket: This is the primary tracked market; 29.5% and falling.
- Sportsbook implied: N/A.
# Analyst opinions and speculation
- Multiple outlets (thewincentral, geeky-gadgets) reported mid-August 2026 leaks suggesting an imminent Astra launch "this week," unconfirmed.
- lifearchitect.ai and mindstudio.ai frame Astra as GPT-5's true successor but stress naming ambiguity and lack of a confirmed release window.
- code_execution's quantitative model treats the "GPT-6" label itself as unlikely to be adopted soon, independent of whether a capable new model ships.
# Directional lean per outcome
- **Yes**: Astra exists, is under active development, briefed to lawmakers, and rumors point to near-term launch; OpenAI's rapid 2026 cadence (six 5.x releases) shows capability to ship quickly if they choose the GPT-6 label.
- **No**: OpenAI has consistently used GPT-5.x branding instead of jumping to GPT-6 even for major capability leaps (5.5, 5.6); naming undecided as of Aug 2026; safety/cybersecurity classification risk could delay any release; statistical base rate and Polymarket's sharp 39-point monthly decline both point toward "No."
# Gaps / unknowns
- No official kalshi_direct data was available for this specific ticker.
- No concrete evidence on Gemini/Claude competitive timing pressure or Stargate compute constraints.
- No confirmation whether Astra, if launched, will be labeled "GPT-6" vs. "GPT-5.7" — this naming decision is the single largest swing factor.
# Calibration anchors
- Polymarket current YES price (proxy anchor): 29.5%, trending down (-39% in 30 days).
- Statistical base rate for a true "GPT-6" release within 14 months of GPT-5: ~8–12% (code_execution model).
- Historical precedent: full-number GPT jumps have taken 29–33 months historically; OpenAI has repeatedly chosen incremental (5.x) branding over the past year despite substantial capability gains.