Codex

OpenAI's coding agent for CLI, IDE, and cloud tasks.

Why we picked it: Hand off a task, let it run in the background, and review the diff.

BEST FOR: PARALLEL BACKGROUND TASKSIncluded with ChatGPT plans · check site

Alternatives

AI code editor with agents that work across your whole repo.

Terminal-first coding agent from Anthropic.

Prompt-to-app builder with hosting and a database baked in.

Source: official site (https://openai.com/codex). Pricing not independently confirmed; check the vendor.