OpenAI Codex CLI is listed under Terminal & CLI Agents, in the Code & Development category on Flocci AI Tools. #1 on Terminal-Bench with GPT-5-series. It is freemium — a usable free tier with paid plans above it, and it lives at openai.com.
OpenAI Codex CLI is freemium: there is a free tier you can work in and paid plans above it. It is one of 391 freemium tools in the catalog, all labelled the same way so you are never surprised by a paywall.
OpenAI Codex CLI does 4 things the catalog singles out: #1 on terminal-bench with gpt-5-series; runs in terminal, ide or the cloud; sandboxed autonomous edits; included with chatgpt plans.
Aider is the closest free alternative: it sits in the same Terminal & CLI Agents sub-category and is free. Cline, Crush and Gemini CLI also start free. The full list is on the alternatives page.
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