# GPT-5.2-Codex GPT-5.2-Codex là mô hình AI từ OpenAI, phát hành vào 2025-12-18. Cửa sổ ngữ cảnh có độ dài 400.000 token. Độ dài đầu ra tối đa là 128.000 token. - Nhà phát triển: OpenAI - Id: gpt-5.2-codex - Theo báo cáo: 2025-12-18T00:00:00.000Z - Đã phát hành: 2025-12-18T00:00:00.000Z - Phát hiện: 2026-09-17T17:42:08.188Z - [liên kết bằng chứng](https://developers.openai.com/api/docs/changelog) - Trạng thái: Đã phát hành - Cập nhật sản phẩm: 2025-12-18 - [liên kết bằng chứng](https://openai.com/index/introducing-gpt-5-2-codex/) - Tính khả dụng của API: 2026-01-14 - [liên kết bằng chứng](https://developers.openai.com/api/docs/changelog) - Tính khả dụng của API: 2025-12-18 - [liên kết bằng chứng](https://openai.com/index/introducing-gpt-5-2-codex) - Địa chỉ chuẩn: https://alexgetman.com/vi/models/openai/gpt-5-2-codex/ ## Câu hỏi ### Cửa sổ ngữ cảnh của GPT-5.2-Codex là gì? Cửa sổ ngữ cảnh có độ dài 400.000 token. Độ dài đầu ra tối đa là 128.000 token. ### GPT-5.2-Codex được phát hành khi nào? 2025-12-18. ## Dòng thời gian - 2026-09-17T17:42:08.188Z · [OpenAI · API changelog](https://developers.openai.com/api/docs/changelog) > Released gpt-5.2-codex to the Responses API - 2026-10-07T19:17:54.872Z · [OpenAI · Codex changelog](https://developers.openai.com/codex/changelog/#codex-2025-12-18) > Starting today, the CLI and IDE Extension will default to gpt-5.2-codex for users who are signed in with ChatGPT - 2026-10-07T19:17:54.872Z · [OpenAI · Codex changelog](https://developers.openai.com/codex/changelog/#codex-2026-04-07) - 2026-11-05T00:01:53.188Z · [OpenAI API](https://api.openai.com/v1/models) - 2026-11-10T17:58:10.980Z · [GitHub · openai/openai-agents-js · code](https://github.com/openai/openai-agents-js/blob/7589b9c40120b89a7d2d28a5a60b4defe1ed7bf5/packages/agents-core/src/sandbox/capabilities/compaction.ts) > -nano-2025-04-14', > ]); > > const SANDBOX_CONTEXT_WINDOWS_400K = new Set([ > 'gpt-5', > 'gpt-5-codex', > 'gpt-5-mini', > 'gpt-5-nano', > 'gpt-5-pro', > 'gpt-5.1', > 'gpt-5.1-codex', > 'gpt-5.1-codex-max', > 'gpt-5.1-codex-mini', > 'gpt-5.2', > 'gpt-5.2-codex', > 'gpt-5.2-codex-cyber', > 'gpt-5.2-pro', > 'gpt-5.3-codex', > 'gpt-5.3-codex-spark', > 'gpt-5.4-mini', > 'gpt-5.4-nano', > ]); > > const SANDBOX_CONTEXT_WINDOWS_200K = new Set([ > 'codex-mini-latest', > 'o1', > 'o1-2024-12-17', > 'o1-pro', > 'o3', > 'o3-2025-04-16', > 'o3-mini', > 'o3-pro', > 'o3-deep-research', > 'o4-mini', > 'o4-mini-2025-04-16', > 'o4-mini-deep-research', > ]); > > const SANDBOX_CONTEXT_WINDOWS_128K = new Set([ > 'gpt-4o', > 'gpt-4o-2024-08-06', > 'gpt-4o-mini', > 'gpt-4o-mini-2024-07-18', > 'gpt-5-chat-latest', > 'gpt-5.1-chat-latest', > 'gpt-5.2-chat-latest', > 'gpt-5.3-chat-latest', > ]); > - 2026-11-10T17:59:50.472Z · [GitHub · openai/openai-agents-python · code](https://github.com/openai/openai-agents-python/blob/d68961657843c7d81dfc25834484f8aac2957eb3/src/agents/sandbox/capabilities/compaction.py) > -pro-2025-10-06", > "gpt-5.1", > "gpt-5.1-2025-11-13", > "gpt-5.1-codex", > "gpt-5.1-codex-max", > "gpt-5.1-codex-mini", > "gpt-5.2", > "gpt-5.2-2025-12-11", > "gpt-5.2-codex", > "gpt-5.2-pro", > "gpt-5.2-pro-2025-12-11", > "gpt-5.3-codex", > "gpt-5.4-mini", > "gpt-5.4-mini-2026-03-17", > "gpt-5.4-nano", > "gpt-5.4-nano-2026-03-17", > ), > 400_000, > ), > **_model_context_windows( > ( > "codex-mini-latest", > "o1", > "o1-2024-12-17", > "o1-pro", > "o1-pro-2025-03-19", > "o3", > "o3-2025-04-16", > "o3-deep-research", > "o3-deep-research-2025-06-26", > "o3-mini", > "o3-mini-2025-01-31", > "o3-pro" - 2026-11-10T18:00:44.369Z · [GitHub · openai/codex · code](https://github.com/openai/codex/blob/82e6bacb9c6950d3b56cb153847fa80bdd698053/.github/ISSUE_TEMPLATE/3-cli.yml) > input > id: plan > attributes: > label: What subscription do you have? > validations: > required: true > - type: input > id: model > attributes: > label: Which model were you using? > description: Like `gpt-5.2`, `gpt-5.2-codex`, etc. > - type: input > id: platform > attributes: > label: What platform is your computer? > description: | > For macOS and Linux: copy the output of `uname -mprs` > For Windows: copy the output of `"$([Environment]::OSVersion | ForEach-Object VersionString) $(if ([Environment]::Is64BitOperatingSystem) { "x64" } else { "x86" })"` in the PowerShell console > - type: input > id: terminal > attributes: > label: What terminal emulator and version are you using (if applicable)? > description: | > Also note any multiplexer in use (screen / tmux / zellij). > E.g., VS Code, Terminal.app, iT - 2026-11-14T00:08:04.818Z · [OpenAI · official articles](https://openai.com/index/introducing-gpt-5-2-codex) > While GPT‑5.2‑Codex has not yet reached ‘High’ level of cyber capability, we are preparing for future models that cross that threshold ## Liên kết bằng chứng - 2026-11-05T00:01:53.188Z: Mục đã bị xóa khỏi nguồn · OpenAI API · `gpt-5.2-codex` ## Liên kết bằng chứng - [OpenAI API](https://api.openai.com/v1/models) - [Artificial Analysis · benchmarks](https://artificialanalysis.ai/models) - [openai-api-changelog](https://developers.openai.com/api/docs/changelog) - [review](https://developers.openai.com/api/docs/models/gpt-5.2-codex) - [OpenAI · Codex changelog](https://developers.openai.com/codex/changelog/#codex-2025-12-18) - [OpenAI · Codex changelog](https://developers.openai.com/codex/changelog/#codex-2026-04-07) - [GitHub · openai/codex · code](https://github.com/openai/codex/blob/82e6bacb9c6950d3b56cb153847fa80bdd698053/.github/ISSUE_TEMPLATE/3-cli.yml) - [GitHub · openai/openai-agents-js · code](https://github.com/openai/openai-agents-js/blob/7589b9c40120b89a7d2d28a5a60b4defe1ed7bf5/packages/agents-core/src/sandbox/capabilities/compaction.ts) - [GitHub · openai/openai-agents-python · code](https://github.com/openai/openai-agents-python/blob/d68961657843c7d81dfc25834484f8aac2957eb3/src/agents/sandbox/capabilities/compaction.py) - [models.dev · catalogue](https://models.dev/#gpt-5.2-codex) - [openai-articles](https://openai.com/index/introducing-gpt-5-2-codex) - [review](https://openai.com/index/introducing-gpt-5-2-codex/) - [OpenCode · discovery](https://opencode.ai/data/openai/gpt-5-2-codex) - [OpenRouter](https://openrouter.ai/openai/gpt-5.2-codex) - [OpenAI · deprecations](https://platform.openai.com/docs/deprecations) - [OpenAI · docs · discovery](https://platform.openai.com/docs/models/gpt-5.2-codex) ## Tín hiệu - [GPT-5.2-Codex: Cập nhật sản phẩm](https://alexgetman.com/vi/signals/2026/09/27/new-page-gpt-5-2-codex/) - [GPT-5.2-Codex: Cập nhật sản phẩm](https://alexgetman.com/vi/signals/2026/09/11/gpt-5-2-codex-xhigh/)