Guides

OpenAI is retiring GPT-5.3-Codex-Spark. Here is why the 1,000+ token/s coding model mattered, what changed, and what developers should use next.

OpenAI’s Agents API turns the Codex harness into a managed agent runtime with long sessions, subagents, tools, sandboxes, and self-hosted compute.

A practical SOP for turning a reference clip into a stable depth video, anchoring a new character, and re-rendering the motion with MiniMax H3.

Claude Code and Codex now share most features. Compare their session-centric and task-orchestration workflows, worktrees, subagents, memory, review, and automation.

A profile of Jason Liu, the Instructor creator and developer-experience engineer helping teams use OpenAI Codex for serious software work.

Meet Alexander Embiricos, OpenAI's Codex product lead, and learn how he is helping turn coding models into a multi-agent engineering platform.

Cindy Agent combines Claude Code, Codex, Pi, local tools, memory and automation in one open-source workspace. See how it works and who should use it.

OpenAI is restoring Codex's 5-hour usage limit for Plus users, while $100 and $200 Pro subscribers remain exempt for now.

OpenAI reset ChatGPT Work and Codex usage limits again. See who benefits, how hard resets work, and the full 2026 reset timeline.

Learn how to keep Codex running on macOS with caffeinate, attach it to an active Codex process, and prevent long coding tasks from sleeping.

Learn how Codex Dream Skin works, what it changes, its CDP security risks, installation precautions, compatibility issues, and business potential.

Explore how Codex can build an AI personal wardrobe, manage clothing data, recommend outfits, and power a new generation of personal software.

Learn why Codex triggers Additional Safety Checks, what each option means, and how to reduce delays without weakening task quality.

Learn why Codex ignores the priority tier for gpt-5.6-sol, what the warning affects, and how to safely fix and verify your configuration.

Run Codex CLI autonomously with workspace sandboxing, no approval prompts, codex exec, auto-review, and safer CI settings.

Meet Tibo Sottiaux, OpenAI’s Head of Core Products across ChatGPT, Codex, the API, enterprise, and agent infrastructure.

Learn what the Selected model is at capacity error means in Codex and the fastest ways to continue working without losing progress.

Add AI to Sublime Text with Copilot, Claude, Codex, Gemini, Ollama, local models, agent workflows, and a custom Python plugin.

Learn when to use GPT-5.6 Sol in Codex, how its six reasoning levels affect coding performance, and which settings fit real development tasks.

Learn what Codex “Prevent sleep while running” means, when to enable it, and how it differs from /fast, /usage, and background execution.

Fix Codex not working in VS Code: missing panel, blank sidebar, sign-in, WSL/code-server, permissions, logs, and CLI fallback.

A practical 2026 guide to AI coding agents, including Codex, Claude Code, Cursor, Devin, Gemini CLI, Copilot, Jules, and open-source alternatives.

Learn what Codex usage limit resets mean, how /usage works, when to spend one, and how resets differ from credits.

Learn why Codex Apps MCP handshaking fails, how to diagnose proxy/auth issues, and how to disable app connectors safely.