OpenAI Codex CLI
OpenAI's open-source terminal coding agent, now on GPT-5.3-Codex.
Overview
Codex CLI is OpenAI's open-source, Rust-built terminal coding agent that reads, edits and runs code locally, backed by GPT-5.3-Codex and its faster Spark variant. It ships free with every ChatGPT plan, from Free through Enterprise, with usage limits that scale by tier.
Pricing
Pricing shown for reference only. These figures reflect RECATOOLS research as of 12 Jul 2026 and may be out of date or incomplete. This is not financial or purchasing advice — always confirm the current price on the provider’s official website before making any decision.
- CLI access via ChatGPT sign-in
- Lowest limits of any tier
- More daily tasks than Free
- 15-80 messages per 5-hour window
- Cloud task delegation
- GitHub code review
- Slack integration
- 75-400 messages per 5-hour window
- Access to GPT-5.3-Codex-Spark (research preview)
- 300-1,600 messages per 5-hour window
- 200-1,200 cloud tasks per window
- Admin controls
- Custom SLAs
What you can produce with OpenAI Codex CLI
- Open-source Rust CLI
- Runs locally with sandboxed file read/write/execute
- Parallel task support via git worktrees and cloud environments
- Included free with every ChatGPT tier, including Free
- GitHub PR code review integration
- Backed by GPT-5.3-Codex and the faster Spark variant
ASEAN Perspective
OpenAI Codex CLI in Southeast Asia
ASEAN-region availability and pricing notes coming soon. Drop the editorial team a note via /contact/ if you can supply local context (Singapore/Malaysia/Indonesia/Thailand/Vietnam).
Codex CLI has scaled into a real Claude Code rival: OpenAI's repo sits at roughly 97,000 GitHub stars and the tool now ships baked into every ChatGPT tier, including Free. Reddit sentiment leans toward Codex for token efficiency and headroom — people report running it hard without hitting limits — while still rating Claude Code ahead on raw code quality for complex, multi-file work. It's open source and Rust-built, so it starts fast and is easy to inspect, but it's tied to a ChatGPT subscription or API key rather than working standalone. Pricing shifted in April 2026 from flat monthly credits to token-metered billing, which makes cost harder to predict up front. Good pick if you're already paying for ChatGPT and want terminal-native agentic coding without another subscription.
What people say
OpenAI's own repository puts Codex CLI at around 97,000 GitHub stars, with issues still landing daily as of July 2026 — a sign it's an actively used tool, not an abandoned experiment. It ships as an open-source Rust binary, distinct from the hosted ChatGPT web agent and the IDE extension, though all three now share the same underlying models.
Developer sentiment, as far as it's visible on Reddit and comparison write-ups, splits along a familiar line: people who prefer Codex CLI cite token efficiency and running it hard without hitting rate limits, describing it as roughly 2-3x more token-efficient than Claude Code on equivalent tasks. Claude Code still wins blind code-quality comparisons for complex, multi-file architecture and frontend work, but its usage limits get cited as the bigger practical constraint for a daily driver. The pattern that keeps coming up is developers running both tools side by side — Codex for infrastructure and terminal-heavy iteration, Claude Code for the trickier refactors.
Pricing changed shape in April 2026: usage moved from flat per-plan credits to token-metered billing (input, cached input and output tokens priced separately), which OpenAI frames as more accurate but makes month-to-month cost harder to estimate without watching usage closely. Concretely, Codex now ships across every ChatGPT tier — Free gets roughly 10 agentic tasks a day before hitting the wall, Go ($8/mo) and Plus ($20/mo) raise that ceiling, and Pro adds a 5x tier at $100/mo alongside the original 20x tier for teams running many parallel tasks. Business and Enterprise are custom-priced with per-seat or negotiated terms.
The net effect is that Codex CLI is now bundled rather than sold separately — you're not paying for the CLI itself, you're paying for a ChatGPT plan that happens to include near-unlimited-feeling terminal access to it, which is a different value proposition than a dedicated coding-agent subscription.
Summary of public user & expert reviews, compiled by RECATOOLS.
About this listing
This entry was compiled from publicly available data including OpenAI Codex CLI's official website, press releases, documentation, and reputable third-party publications. RECATOOLS is not affiliated with OpenAI Codex CLI unless explicitly stated.
Third-party AI tools update their pricing, features, availability, and policies frequently. Information here may be outdated by the time you read this — we make reasonable efforts to keep listings current, but cannot guarantee absolute accuracy.
For the latest details, please refer to OpenAI Codex CLI directly →
Spotted something out of date? Suggest an update →
OpenAI Codex CLI in the news
AI & ML
AWS Commits $1 Billion to Embedded AI Engineers as the Enterprise Fight Shifts to Deployme...
AI & ML
OpenAI Ships GPT-5.6 to Everyone — Three Tiers, One Generation, and a Government Preview I...
AI & ML
OpenAI Reportedly Floats a 5% US Government Stake — and Reopens the Question of Public Own...
More in Code & Dev Tools
