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ChatGPT — Release Notes
English explanation
The update introduces expanded context windows for Thinking and interactive code blocks, enabling developers to handle longer, more complex reasoning tasks with improved usability. These enhancements directly support AI product teams in building more reliable long-context applications and streamlining code-related workflows.
中文解释
本次更新为Thinking模式扩展了上下文窗口并新增交互式代码块，显著提升了长文本推理与代码处理的效率。这对AI产品团队优化长上下文应用及开发者提升编码工作流体验具有直接的实际价值。
Official highlights
- Expanded context window for Thinking February 19, 2026 Interactive Code Blocks in ChatGPT February 13, 2026 Retiring GPT-4o and other legacy models ChatGPT updates: Better file uploads, easier copying, and more reliable long chats Web Android iOS Web, iOS, and Android February 12, 2026 ChatGPT Voice Update February 10, 2026 Updates to deep research GPT-5.2 Instant Update February 9, 2026 Testing ads in ChatGPT (Free, Go) February 4, 2026 [...] February 4, 2026 Update on thinking time settings for GPT-5.2 Thinking in ChatGPT February 2, 2026 Introducing the Codex app January 30, 2026 More visual responses January 29, 2026 Retiring GPT-4o and other legacy models January 26, 2026 Improvements to search response quality in Voice January 22, 2026 5.2 Personality System Prompt Update January 20, 2026 Voice Updates Rolling out age prediction January 15, 2026 [...] This update focuses on the parts of the ChatGPT experience people feel every day: tone, relevance, and conversational flow. These are nuanced problems that don’t always show up in benchmarks, but shape whether ChatGPT feels helpful or frustrating. GPT‑5.3 Instant directly reflects user feedback in these areas. # February 27, 2026 ## ChatGPT Web and Android updates: Edit image prompts, share faster, and smoother conversations ### Web