OpenAI & ChatGPT Timeline: GPT Release Dates to GPT-6 Astra (2026)
OpenAI & ChatGPT Timeline: GPT Release Dates to GPT-6 Astra (2026)
摘要: OpenAI & ChatGPT Timeline: GPT Release Dates to GPT-6 Astra (2026)
Track every major GPT and ChatGPT release date, including GPT-1, GPT-4, GPT-5, GPT
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OpenAI & ChatGPT Timeline: GPT Release Dates to GPT-6 Astra (2026)
Track every major GPT and ChatGPT release date, including GPT-1, GPT-4, GPT-5, GPT-5.6, Codex, Sora, GPT Image 2, and OpenAI milestones.
ChatGPT launched on November 30, 2022, as OpenAI’s public AI assistant. This timeline tracks the GPT models and product releases that shaped ChatGPT, from GPT-1 and GPT-3 to GPT-4, GPT-5, GPT-5.6, GPT-6, Codex, and Sora.
The quick release table below lists the main model and product dates. The year-by-year timeline adds launches, access changes, APIs, subscriptions, safety updates, and other events from 2018 to the present.
OpenAI’s latest model release is
GPT-6 Astra
, which began rolling out on September 3, 2026. OpenAI describes Astra as its most capable model broadly deployed and its first model to reach the Critical cybersecurity capability threshold under the Preparedness Framework.
OpenAI also announced
Daybreak for Frontline Defenders
, a $1 billion commitment for subsidized cyber-model access, training, technical support, and partnerships that help organizations protect essential services.
Last updated: September 7, 2026
GPT Model and ChatGPT Release Dates
Model or Product
Release Date
Key Highlight
GPT-6 Astra
September 3, 2026
Frontier model for computer use, browsing, software engineering, science, professional work, and cybersecurity, with an initial limited rollout.
Daybreak for Frontline Defenders
September 3, 2026
$1 billion commitment for subsidized Daybreak access, training, technical support, and partnerships for defenders of essential services.
ChatGPT for Healthcare connections
September 1, 2026
Epic integration and a Healthcare Public Data plugin for authorized patient context and structured information from nine official sources.
ChatGPT for Teens
August 18, 2026
Learning-focused ChatGPT experience for teens with stronger default protections, parent controls, and healthy-use features.
GPT-5.6 Sol Ultrafast mode previ