OpenAI Codex
OpenAI's agentic coding tool across CLI, IDE extension, web and mobile: it plans and executes multi-step coding tasks, runs in the cloud or locally, and opens PRs. Free tier to start; usage scales via token-based billing on paid plans.
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Our take
Codex is OpenAI's coding agent, and it is everywhere: a CLI, a VS Code extension with millions of installs, a web app and mobile. It plans and runs multi-step tasks, executes in the cloud or locally, and opens pull requests. There is a free tier, but since April 2026 paid use is token-billed, so heavy days can run $100-200. Powerful and well-integrated; watch the meter.
Best for
Developers in the OpenAI ecosystem who want one autonomous agent across terminal, IDE and cloud.
Pros
- Works across CLI, IDE, web and mobile
- Runs tasks in the cloud or locally, opens PRs
- Free tier to start, plus several paid tiers
- Backed by frontier OpenAI models
Cons
- Token-based billing makes heavy use costly and less predictable
- Best value needs a Plus or Pro plan
- Autonomy still needs human review on big changes
How it compares
Codex and Claude Code are the two heavyweight autonomous coding agents; Codex spans more surfaces (web, mobile, Bedrock), while pricing is now token-metered rather than a flat seat.
Full review
OpenAI Codex is an agentic coding system that shows up wherever you work: a command-line tool, a VS Code extension with millions of installs, a web app, a mobile app, and, as of mid-2026, Amazon Bedrock. You hand it a task and it plans the steps, edits across files, runs commands and tests, and can open a pull request for review.
Pricing spans a free tier up through Go ($8), Plus ($20) and Pro (from $100), but the important change is that paid plans moved to token-based billing in April 2026: you are charged for input and output tokens per model, which OpenAI itself estimates at roughly $100-200 a month for power users. For cost-conscious developers in India the free and Go tiers are a reasonable on-ramp, but model your expected token burn before committing a team. As an autonomous agent it is genuinely capable, yet large or sensitive changes still warrant a human pass.
Cloudkart Trust Graph
4.0/5- Actual Utility5/5
Source: Initial LLM-authored rubric (backfill)
- Ease of Use4/5
Source: Initial LLM-authored rubric (backfill)
- Pricing Fairness3/5
Source: Initial LLM-authored rubric (backfill)
- Reliability4/5
Source: Initial LLM-authored rubric (backfill)
- Differentiation4/5
Source: Initial LLM-authored rubric (backfill)
Scored as of . Each score is versioned and auditable; vendors cannot buy it.
How this score is set
- Editorial rubric
- Primary signal — five dimensions, 4.0/5 average.
- Community reviews
- None yet.
- Pricing verified
- Not yet verified
- Independence
- Score set by our editorial team before any affiliate relationship is considered. No vendor can buy it.
Frequently asked questions
- Is OpenAI Codex free, and how much does it cost?
- OpenAI Codex has a free tier, with paid plans that unlock advanced features.
- Who is OpenAI Codex best for?
- Developers in the OpenAI ecosystem who want one autonomous agent across terminal, IDE and cloud.
- How is OpenAI Codex rated on Cloudkart.ai?
- OpenAI Codex scores 4.0 out of 5 on the Cloudkart.ai rubric, which weighs actual utility, ease of use, pricing fairness, reliability and differentiation. Scores are set editorially and can never be bought.
Community reviews
No community reviews yet. Be the first to share how OpenAI Codex works for you.
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Compare OpenAI Codex head-to-head: vs Composio · vs LiteLLM · vs Claude Code · vs Kiro