Openai model release forecasts

Historical Release Cadence

OpenAI has maintained an aggressive schedule for model releases Verified Answer #1. Following the launch of GPT-5 in August 2025, the company released six models within the GPT-5 family over approximately eight months Verified Answer #1. GPT-5.5, codenamed 'Spud', was released on April 23, 2026 Verified Answer #1. CEO Sam Altman has stated that the gap between GPT-5 and GPT-6 will be significantly shorter than the 28-month gap observed between GPT-4 and GPT-5 Verified Answer #1.

Market Forecasts

Prediction markets strongly favor a 2026 release for GPT-6 Verified Answer #1. As of May 8, 2026, Kalshi priced the probability of a GPT-6 release before September 1, 2026, at 60% Verified Answer #1. A Polymarket contract from late April 2026 priced the likelihood of a launch by December 31, 2026, at 86% Verified Answer #1.

Competitive and Strategic Factors

OpenAI faces intense competitive pressure from Anthropic, whose Claude Opus 4.7 model has outperformed OpenAI in certain coding benchmarks Verified Answer #1. While GPT-5.5 achieved a score of 58.6% on SWE-bench Pro, Claude Opus 4.7 reached 64.3% Verified Answer #1. OpenAI began testing GPT-5.6 in late April 2026, indicating a potential reliance on iterative updates Verified Answer #1. Company leadership has recently shifted focus toward usability and personalization rather than raw increases in intelligence Verified Answer #1.

Sources of Uncertainty

Several factors contribute to uncertainty regarding the timing and nature of the next major release Verified Answer #1:

• OpenAI may choose to brand its next powerful model as GPT-5.8, 'GPT-Next', or an 'o-series' model instead of GPT-6 Verified Answer #1.
• Technical glitches, such as the 'goblin obsession' issue that affected GPT-5.5, could delay major pre-training runs Verified Answer #1.
• Ongoing concerns regarding AI alignment and safety remain a primary source of uncertainty for future schedules Verified Answer #1.