SEO veteran and serial internet entrepreneur shipping AI-coded SEO tools
ian.is SEO tools, URL Monitor (now Cromojo), Keyword Metrics +1$100K ARR
Coding agent · prices checked Nov 3, 2026
OpenAI's coding agent, available as an open-source CLI, an IDE extension, Codex Cloud and inside the ChatGPT web, desktop and mobile apps. It is included in every ChatGPT plan, including Free, or billed at API rates with an API key.
Official site: openai.com/codex · Links on this page are not affiliate links.
Developers use the CLI/IDE extension on local repos, while the ChatGPT desktop and web apps let less technical users delegate tasks without a terminal.
Pick Codex if: You already pay for ChatGPT or want an agent you can try free, in a terminal or the ChatGPT app.
Skip it if: You want fixed, published usage numbers; Plus limits are estimated ranges.
| Plan | Price | What you get |
|---|---|---|
| Free | $0 | GPT-6 Luna, Standard speed, desktop app; subject to rollout |
| Go | $8/mo | GPT-6 Luna, Standard speed, desktop app; subject to rollout |
| Plus | $20/mo | GPT-6.1 Sol and GPT-6 Luna; estimated 15–160 GPT-6.1 Sol local messages per 5 hours |
| Pro | from $100/mo | $100, $200 and $500 tiers; no 5-hour limit; Ultrafast mode on $500 tier |
| Business | $25/user/mo | $20/user/mo billed annually, 2+ users |
| Enterprise & Edu | Contact sales | Flexible-pricing customers have no fixed rate limits |
| API key | Pay per token | Billed at API rates, e.g. gpt-6.1-sol $2/$10 per 1M tokens |
Pricing model: subscription (ChatGPT plans) or usage (API key). ChatGPT Free ($0) and Go include Codex with GPT-6 Luna at Standard speed in the desktop app, subject to rollout; no published limits for these tiers.
Short steps based on the official docs.
Funding, launches and changes, each from the sources listed below.
2 makers on IndieMakerList list Codex in their stack. Those who share revenue report about $8.3K/mo combined (self-reported, different dates, whole business).
SEO veteran and serial internet entrepreneur shipping AI-coded SEO tools
ian.is SEO tools, URL Monitor (now Cromojo), Keyword Metrics +1$100K ARR
1 maker who no longer builds their own products — most now work at a company. Kept for the record.
@steipete United States608K followers
PSPDFKit founder turned creator of OpenClaw, the open-source personal AI agent
OpenClaw, PSPDFKit (Nutrient), CodexBar +2
You want the agent and model pair that currently tops Terminal-Bench 4.0 working across your whole repo, in a terminal, IDE or desktop app.
You want a free, open-source agent in VS Code and control over which model you pay for.
You want a free, open-source, model-agnostic agent with a desktop app that also handles non-coding tasks.
You have a paid Gemini API key or a Code Assist license and want an open-source terminal agent.
You want a browser builder that can also produce an Expo mobile app and lets you pick the Claude model.
You want an agent plus a full cloud IDE, database and hosting in one place, and may grow into editing code.
Yes, there is a free plan. ChatGPT Free ($0) and Go include Codex with GPT-6 Luna at Standard speed in the desktop app, subject to rollout; no published limits for these tiers. Paid use starts at Free in ChatGPT; Plus $20/mo (checked Nov 3, 2026).
OpenAI Codex pricing as listed on its official page on Nov 3, 2026: Free: $0; Go: $8/mo; Plus: $20/mo; Pro: from $100/mo; Business: $25/user/mo; Enterprise & Edu: Contact sales; API key: Pay per token. Pricing model: subscription (ChatGPT plans) or usage (API key).
Developers use the CLI/IDE extension on local repos, while the ChatGPT desktop and web apps let less technical users delegate tasks without a terminal. Pick it if: You already pay for ChatGPT or want an agent you can try free, in a terminal or the ChatGPT app. Skip it if: You want fixed, published usage numbers; Plus limits are estimated ranges.
OpenAI models only: GPT-6.1 Sol, GPT-6.1 Terra, GPT-6 Sol, GPT-6 Luna, GPT-6 Astra (plan-dependent); API-key users get whatever their key can access
local repo (cloud tasks run in OpenAI sandboxes against your GitHub repo)
Common alternatives are Claude Code ($20/mo (Claude Pro)), Cline (Free + model API costs), goose (Free + model API costs), Gemini CLI (Gemini API pay-as-you-go) and Bolt ($25/mo). See the full comparison of vibe coding tools for how they differ.
2 makers on IndieMakerList list Codex in their stack, including Ian Nuttall.
Related: what vibe coding is, the best vibe coding tools compared, head-to-head comparisons and the indie maker tech stack.
Official pages were read on Nov 3, 2026. Prices change often; check the vendor's page before you buy.