r/codex
Codex coding tools by OpenAI - Codex CLI and IDE Extension
Founded October 2011 · Public — anyone can post
This is the information and discussion subreddit for OpenAI Codex tools - Codex CLI, Codex IDE Extension and Codex in the Cloud that are included in ChatGPT Plus, Pro, Business, Edu, and Enterprise plans. r/Codex is designed to foster community discussion. Posting priority favors those who help others here. This subreddit is not an official OpenAI subreddit.
Members
215,990
216K
Online now
—
not captured in the last snapshot
Posts per day
—
no sample yet
Comments per post
—
no sample yet
Growth · 7d
—
not enough history yet
Growth · 30d
+14%
+26K members · ≈29d
Published rules
10
0 mention promotion — quoted below
Last post
—
no sample yet
Distinct posters
—
no sample yet
Tracking since Aug 6 · growth spans are the real distance between snapshots, not rounded windows. Posts/day is measured from the community’s own newest posts on Reddit, not from what Prowlo happens to crawl.
Member growth
What works in r/codex
Every post in a recent sample, labelled by format. Share is how much of the sample used that format; average score is how it performed.
| Format | Share of posts | Avg score |
|---|---|---|
| Rant | 41% | 888 |
| News / link | 26% | 330 |
| Discussion | 14% | 1,341 |
| Question | 9% | 261 |
| Show & tell | 4% | 1,404 |
| Tool comparison | 3% | 338 |
| How-to | 1% | 655 |
| Promo | 1% | 0 |
Based on 70 posts sampled in September 2026. A sample, not the full history.
- Median score
- 744
- Top 10% score
- 1,575
- Text posts
- 33%
- Got no replies
- 3%
- Busiest windows
- Thu 18:00 UTC, Thu 17:00 UTC
Posting rules, in plain words
Self-promotion is judged case by case. Promotion goes in Megathread (for low detail problem reports or venting). Post flair is required.
- Be relevant to the Codex technology: Posts must be directly related to Codex suite of tools. If the post is a comparison or question about other tech you need to share detail. If you want a recommendation because you're quitting Codex, try somewhere else.
- High information posts get highest priority: Well-supported criticisms, reports, commentary are welcome and helpful. That includes details of your setup, prompts, what happened, screenshots, detailed experiences, reasoning, output, before-and-afters.
- Use the right flair: Your post might be deleted if it does not use the right flair. This particularly applies to complaints, usage limits or bug reports. If the bot decides your post is a complaint, it will change the post flair. Same for resets. People use flair to filter stuff they don't want to read. If you want to see how to filter the feed of different flairs check this post https://www.reddit.com/r/codex/comments/1v3iopc/showcase_turn_rcodex_back_into_a_useful_technical/
Quoted from the community’s own published rules. Always re-read them before posting.
What a good comment looks like here
- — Offers specific advice on optimizing usage or model selection.
- — Compares different AI models (e.g., Sol, Luna, Terra, Claude) based on personal experience.
- — Provides detailed explanations or technical insights.
- — Uses humor or relatable analogies to make a point.
- — Expresses strong opinions backed by perceived evidence or experience.
r/codex's published rules
None of r/codex's 10 published rules mentions promotion, advertising or spam. That is not the same as promotion being welcome — read the rules below and the sidebar before posting.
All 10
- Respect
- Be relevant to the Codex technology
- High information posts get highest priority
- More r/Codex comment karma = higher posting priority
- The moderation of r/Codex is partly automated
- For problem reports with low detail, use Megathreads. For high detail, post to the feed.
- Check previous posts before posting
- Use the right flair
- Don't use bots. Read up on BotBouncer
- Attack OpenAI's practices. not its people.
Read from r/codex’s published rules on Sep 3. Communities change their rules without notice and enforce requirements (karma, account age, flair) that may live in the sidebar or automod rather than here — the source page is the authority.
Similar by content
Communities that discuss what r/codex discusses.
r/ChatGPTCoding is a community for building, learning, and experimenting with AI-assisted coding. Share workflows, questions, technical lessons, news, and projects about coding, debugging, testing, and building with AI tools such as ChatGPT, Codex, Claude, Cursor, and open-source models.
Codex: A command center for agents. an open-source local coding agent that turns natural language into working code. Tell Codex what to build, fix, or explain, then watch it bring your ideas to life.
A community for putting ChatGPT and other language models to good use. Share workflows, ask questions, and learn from what others are trying—in work, study, and everyday life. Whether you’re getting started or exploring advanced uses, you’re welcome here. We’re an unofficial community whose name predates OpenAI’s ChatGPT Pro subscription and has no connection to the plan.
A community for sharing and exchanging OpenAI Codex Credit reward invitations. Have an extra credit reward invite? Post it here. Looking for one? Connect with other Codex users who have invitations available. Share fairly, help each other out, and keep the community free of scams, spam, and invite abuse. Not affiliated with or endorsed by OpenAI.
An unofficial community to discuss GitHub Copilot, an artificial intelligence tool designed to help create code.
See the full lists on similar subreddits.
r/codex — frequently asked
How many members does r/codex have?
r/codex has 215,990 members as of our most recent crawl on Oct 6. Prowlo re-checks tracked communities on a rolling schedule, so this figure moves rather than sitting frozen at whatever it was when a scraper last ran.
Is r/codex growing?
Over the last ≈29 days r/codex changed by +14% — a gain of 26K members. We compare against the nearest snapshot we actually hold and state the real span rather than rounding it to a clean "30 days".
How active is r/codex?
We don't have a reliable posting-rate sample for r/codex yet. Subscriber count alone is a poor guide to whether a community is active, so treat this one as unverified until the next sample lands.
When was r/codex created?
r/codex was founded in October 2011 and is a public — anyone can post community. Age matters: an older community with steady growth has survived Reddit's moderation churn; a young one with a spike may not.
Can I promote my product in r/codex?
None of r/codex's 10 published rules mentions promotion, advertising or spam. That is not permission: read the rules and the sidebar, contribute first, and mention your product only when it is the honest answer to someone's question.
How do I monitor r/codex for mentions?
Hit Watch on this page. Prowlo starts crawling r/codex into your Dataset — every new post indexed and embedded, searchable semantically, queryable by your AI agent over MCP, and able to trigger keyword alerts in Slack. Prowlo is read-only; it never posts on your behalf.
Can my AI agent read r/codex's stats?
Yes. Everything on this page is one MCP tool call away: catalog_get_subreddit returns r/codex's members, growth, promo tolerance and similar communities as typed JSON — free, no credits. Connect your agent to api.prowlo.com/mcp and it can vet the community and start watching it in the same conversation.
Read-only · Human-in-the-loop
Prowlo never posts for you
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