⚠️ Pricing change: GPT-5.5 retires from ChatGPT, ChatGPT Work and Codex on all plans on 2026-10-14. OpenAI's Codex pricing page, which now redirects to learn.chatgpt.com, says the OpenAI API is not affected. Source ↗ (effective 2026-10-14)View in changelog →
The day we last read the vendor's page. Our last read of it, on 2026-09-22, found the page different from the terms we hold. We hold no confirmation of the terms we publish — the 2026-08-30 beside this date is not one we can source to a read that confirmed them.
Free Tier Details
Coding agent by OpenAI. Available with a ChatGPT subscription, including the $0 Free plan, and separately with an API key billed on token use; both routes are current. OpenAI's Codex pricing page lists Free ($0/month, "Explore Codex capabilities on quick coding tasks") and Go ($8/month, "Use Codex for lightweight coding tasks"), both with GPT-6 Luna at Standard speed in the desktop app, subject to rollout. Plus ($20/month) adds Codex on the web, in the CLI, in the IDE extension and on iOS, cloud code review and Slack integrations, and GPT-6 Sol. Pro (from $100/month) gives 5x or 20x more Codex usage than Plus. ChatGPT Business has two seat types, both carrying Codex: Standard at $20/user/mo billed annually ($25 monthly) and Premium at $100/user/mo billed annually ($125 monthly), where Premium buys 5x more usage than Standard and removes the five-hour usage limit. The Codex pricing page we cite lists only the Standard seat — the Premium seat is published on OpenAI's business pricing page. Codex-only pay-as-you-go seats closed to new Business workspaces on 2026-06-24; existing seats continue. With an API key, Codex runs in the CLI, SDK or IDE extension at API prices, without the cloud features.
We read that on 2026-09-22 from https://developers.openai.com/codex/pricing/, and our check recorded: the page names OpenAI Codex as "codex" and states "$20" and "$100" and "$25". A source check reads the cited page for the service's name and a price; the limits above are from our own record.
When You'll Outgrow OpenAI Codex's Free Tier
When your usage exceeds the free tier limits, you'll need to upgrade.
GPT-5.5 retires from ChatGPT, ChatGPT Work and Codex on all plans on 2026-10-14. OpenAI's Codex pricing page, which now redirects to learn.chatgpt.com, says the OpenAI API is not affected. Source ↗
Before: GPT-5.5 available in ChatGPT, ChatGPT Work and Codex
After: "GPT-5.5 retires from ChatGPT, ChatGPT Work, and Codex on all plans on October 14, 2026. The OpenAI API isn’t affected."
Data correction - OpenAI's post of 2026-04-02 added Codex-only pay-as-you-go seats beside ChatGPT subscriptions and lowered ChatGPT Business's annual seat price. We had recorded it on 2026-04-03 as a switch from subscriptions to pay-as-you-go. Source ↗
Before: Recorded as pricing_restructured, dated 2026-04-03
After: new_tier, dated 2026-04-02 from OpenAI's post
OpenAI added Codex-only seats for ChatGPT Business and Enterprise workspaces, with no fixed seat fee, no rate limits and usage billed on token consumption, and cut ChatGPT Business's annual price from $25 to $20 per seat. Standard Business seats, which include Codex with usage limits, continued. Source ↗
Before: ChatGPT Business at $25 per seat billed annually; Codex available through ChatGPT seats with usage limits
After: "teams on ChatGPT Business and Enterprise can add Codex-only seats to their workspaces with pay-as-you-go pricing, giving full access to Codex without a fixed seat fee"; "we're lowering the annual price of ChatGPT Business from $25 to $20 per seat"
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Yes, OpenAI Codex offers a free tier: Free. Coding agent by OpenAI. Available with a ChatGPT subscription, including the $0 Free plan, and separately with an API key billed on token use; both routes are current. OpenAI's Codex pricing page list...
What is OpenAI Codex's free tier?
OpenAI Codex's free tier is called "Free". Coding agent by OpenAI. Available with a ChatGPT subscription, including the $0 Free plan, and separately with an API key billed on token use; both routes are current. OpenAI's Codex pricing page lists Free ($0/month, "Explore Codex capabilities on quick coding tasks") and Go ($8/month, "Use Codex for lightweight coding tasks"), both with GPT-6 Luna at Standard speed in the desktop app, subject to rollout. Plus ($20/month) adds Codex on the web, in the CLI, in the IDE extension and on iOS, cloud code review and Slack integrations, and GPT-6 Sol. Pro (from $100/month) gives 5x or 20x more Codex usage than Plus. ChatGPT Business has two seat types, both carrying Codex: Standard at $20/user/mo billed annually ($25 monthly) and Premium at $100/user/mo billed annually ($125 monthly), where Premium buys 5x more usage than Standard and removes the five-hour usage limit. The Codex pricing page we cite lists only the Standard seat — the Premium seat is published on OpenAI's business pricing page. Codex-only pay-as-you-go seats closed to new Business workspaces on 2026-06-24; existing seats continue. With an API key, Codex runs in the CLI, SDK or IDE extension at API prices, without the cloud features.
Is OpenAI Codex's free tier reliable?
OpenAI Codex's free tier is considered stable. None of the 2 recorded changes narrowed the terms. See the pricing history below.
Is OpenAI Codex's free tier good for production?
OpenAI Codex's free tier can be suitable for small production workloads and side projects. We rate it stable and it offers Coding agent by OpenAI…, so it's a reasonable starting point. None of the 2 recorded changes narrowed the terms. Monitor your usage against the limits and have an upgrade plan ready.
What changed in OpenAI Codex's pricing?
OpenAI Codex has had 2 recorded pricing changes. Most recently: OpenAI added Codex-only seats for ChatGPT Business and Enterprise workspaces, with no fixed seat fee, no rate limits and usage billed on token consumption, and cut ChatGPT Business's annual price from $25 to $20 per seat. Standard Business seats, which include Codex with usage limits, continued. Source: https://openai.com/index/codex-flexible-pricing-for-teams/ (2026-04-02).
When will I outgrow OpenAI Codex's free tier?
When your usage exceeds the free tier limits, you'll need to upgrade. When you outgrow the free tier, evaluate paid plans against alternatives — sometimes a competitor's free tier covers what you need.
What category is OpenAI Codex in?
OpenAI Codex is categorized under AI Coding on AgentDeals.
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