Will GPT-6 be released by December 31, 2026?

Prediction markets put the probability at 84%: Will GPT-6 be released by December 31, 2026. Currently, markets see this as likely (84% YES). Gemini 3.7 Flash lists at $0.75 per 1M input tokens and $3.75 per 1M output tokens.

What’s Happening

The race to release the next major frontier model has intensified following a flurry of product launches in mid-August 2026. On August 13, Google unveiled Gemini 3.7 Flash, a refinement of its 3.6 Flash model that ships just three weeks after its predecessor, while OpenAI simultaneously debuted GPT-5.6 Sol Ultrafast as an invite-only offering. The pricing landscape shows GPT-5.6 Terra listed at $2.00 per 1M input tokens and $12.00 per 1M output tokens, placing it above Google's introductory rate for Gemini 3.7 Flash, which expires December 31, 2026. These rapid-fire releases have shifted attention to the next major milestone, with traders assigning an 84% probability that GPT-6 will be released by December 31, 2026 [Marktechpost, Aug 13].

The timeline for GPT-6 be released has become a focal point after OpenAI's recent regulatory friction delayed the launch of GPT-5.6 at Washington's request, according to Kalshi odds analysis. Despite ChatGPT reaching 1 billion monthly app users in May, the company now faces heightened scrutiny that could impact its release cadence. The previous generation, GPT-5.6, resolved its own prediction market on July 9, 2026 with a final probability of 100%, closing with $1.01 million in volume and $118,120 in open interest. That precedent suggests markets have accurately tracked OpenAI's shipping patterns, though the regulatory environment remains a wildcard for whether GPT-6 be released on schedule [Cryptoslate, Jul 7].

Competitive pressure is mounting from multiple fronts, with Google's Gemini 3.7 Flash showing significant coding gains—improving FrontierCode scores from 34.4% to 43.6% and DeepSWE from 48.6% to 65.3%. Meanwhile, Cerebras has partnered with OpenAI to accelerate GPT-5.6 Sol Ultrafast, benchmarking it on July 31, 2026, as the world's fastest frontier model. The broader AI landscape shows Claude dominating after a White House win, while Grok's odds as "Best AI of 2026" have fallen to 6.9 cents. With OpenAI's next-generation model carrying an 84% probability of arrival by year-end, the key question is whether the company can navigate regulatory hurdles and maintain its release velocity against aggressive competitors like Google, which shipped two Flash iterations in under a month [Decrypt, Aug 13].

Traded on Polymarket — $133K Volume

Polymarket prices this at 84c YES with $133K in volume. Moderate liquidity — use limit orders for positions above $1K to avoid moving the price.