Codex
Core Facts
Gemini 4 Argon is fully available to paid users, but the Anti-Gravity feature is limited to Ultra subscribers, and Pro users cannot use it.
The API model identifier for GPT-6 Astra is gpt-6-astra.
Claude Code is an AI programming assistant launched by Anthropic.
Timeline (last 90 days)
On day 25 of Codex's 28-day update plan, OpenAI announced that Codex quotas for Pro and Business Premium users are doubled, covering the Pro 100, 200, and 500 tiers and Business Premium.
The alignment of scores that Rubricon-generated rubrics assign to frontier LLM responses with expert-written rubrics is 9% higher than that of the best alternative synthesis method, with compared methods including RRD, QSRG, OpenRubrics, and agent-based generation methods such as Codex.
The course author mentions that Claude Code accounts are easily banned, and that for most people, even if they want to use higher-end capabilities, they often at most reach the Codex level.
For beginners aiming at office deliverables, the pragmatic path is to start with WorkBuddy first and get the "describe the requirement—get the finished product" loop working; only when there is a genuine software project need should they transition to Codex.
Identifying which model generated the code is not difficult for 80% of PRs: Codex names branches with a codex/ prefix, and Claude writes co-authored-by in the PR description and commit messages.
For office workers without a computer science background whose daily needs center on file processing, format conversion, spreadsheet design, and document archiving, WorkBuddy's free credit model and low-barrier installation are worth a try; users with high-frequency programming needs or extremely high requirements for execution precision will still find development-oriented Agents such as Codex the better choice, but at a higher cost.
Codex costs about 200 yuan per month, and network issues need to be resolved separately.
The UP host judges that domestic and overseas AI Agent products will sooner or later converge, and that the functional boundaries between general-purpose Agents (WorkBuddy, OpenClaw) and development-oriented Agents (Codex, Claude Code, Trae) will gradually blur.
T3 Code was born out of disappointment with the OpenAI Codex app and the Anthropic Claude Code desktop version, and the team decided to build an open-source alternative.
Theo claims that T3 Code uses 100 times less data than Codex when switching threads and works smoothly even on poor mobile networks.
40 more timeline events
All Facts (20)
Gemini 4 Argon is fully available to paid users, but the Anti-Gravity feature is limited to Ultra subscribers, and Pro users cannot use it.
90%VerifiedThe API model identifier for GPT-6 Astra is gpt-6-astra.
90%VerifiedClaude Code is an AI programming assistant launched by Anthropic.
90%VerifiedOpenAI's Codex Agent platform focuses on a sandboxed code execution environment, where each task runs in an isolated container.
90%VerifiedGitHub Copilot was first released as a technical preview in 2021, based on OpenAI's Codex model.
90%VerifiedCodex is the core engine behind GitHub Copilot.
90%VerifiedOpenAI Codex is the underlying engine for products such as GitHub Copilot.
90%VerifiedOpenAI Codex was originally released in 2021 as a code generation model fine-tuned on GPT-3 and was the core engine behind GitHub Copilot
90%VerifiedCodex supports dozens of programming languages including Python, JavaScript, TypeScript, Go, and Ruby.
90%VerifiedGitHub Copilot is built on OpenAI's Codex model, which is a code-specialized fine-tuned version of GPT-3 trained on tens of billions of lines of public code.
90%VerifiedGitHub Copilot基于OpenAI Codex模型，专注于行级和函数级代码补全
90%VerifiedCodex excels at tasks such as function-level code completion, module architecture generation, and documentation-to-code conversion.
90%VerifiedOrdinary office workers should prioritize using WorkBuddy to get work done, and only advance to learning Codex when it is no longer sufficient, in order to reduce the learning cost.
80%VerifiedWorkBuddy is positioned as a domestic alternative to Codex.
80%VerifiedWorkBuddy works out of the box without requiring environment configuration or command-line setup, making it beginner-friendly; Codex requires stronger hands-on ability and a programming background.
80%VerifiedDeepSeek Harness is written in TypeScript, and installation requires a Node.js environment (tested with Node.js 24).
80%VerifiedAgents possess a 'plan–execute–feedback' loop capability, can call external tools such as web search, databases, and APIs, and can decompose complex tasks.
80%VerifiedCodex CLI can read local codebases, execute shell commands, edit files, and run tests.
80%VerifiedPass rates of code generation models on benchmarks such as HumanEval jumped from 60% to over 90% between 2024 and 2025
80%VerifiedCodex CLI is a command-line programming tool launched by OpenAI that allows developers to interact directly with AI models in the terminal to complete coding tasks.
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