Expired50% confidenceFactExact time
After 2023, GitHub gradually upgraded Copilot's underlying model from Codex to newer GPT-series models and introduced conversational features such as Copilot Chat.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
Related Claims
UnverifiedAfter 2023, Codex capabilities were deeply integrated into ChatGPT (GPT-4) and GitHub Copilot79% similarUnverifiedAfter 2024, GitHub Copilot gradually introduced a multi-model support strategy, allowing users to switch between models like GPT-4o and Claude.78% similarUnverifiedGPT Codex最初作为GitHub Copilot的底层引擎，2025年推出了集成代码编辑器、终端和内置浏览器的独立桌面端应用76% similarVerifiedThe original Codex was released in 2021, fine-tuned based on GPT-3, and was once the underlying engine of GitHub Copilot.76% similarUnverifiedGitHub Copilot 于 2021 年推出时基于 GPT-3 衍生模型，主要依赖局部上下文进行 token 级预测75% similar
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