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openai
codex
Rust2025–2026
openai / codex

codex

Lightweight coding agent that runs in your terminal

163Distinct people
218Mentions
2Explicit recommenders
135.1KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Lightweight coding agent that runs in your terminal

GitHub

Where it is used

No documented product use was verified in the last source check.

What people are saying

I love the fact that they're advertising the latest Codex Cli while most Windows users had to rollback/downgrade to an older version because of the annoying excessive terminal…

coverband used a recommendation phrase. 2 indexed comments match. This is a phrase match, not a verdict.

Critical Commenters criticize the repository for excluding .NET support by default and for rejecting community contributions with poor communication. Other comments highlight a specific bug where the model accidentally truncated its thinking process due to efficiency improvements.

A warning from this week’s discussion. Read the supporting reply

Also in these discussions

Mentioned in the same Hacker News threads. That is not proof they are substitutes.

This week on Hacker News

Critical

Commenters criticize the repository for excluding .NET support by default and for rejecting community contributions with poor communication. Other comments highlight a specific bug where the model accidentally truncated its thinking process due to efficiency improvements.

Supporting reply 1 · Supporting reply 2 · 3 discussions summarized

Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 12:01:02 AM UTC.

Announcing .NET 11 direct repository linkDebated

The discussion is characterized by a split between praise for .NET 11's technical features and severe criticism of Microsoft's aggressive upgrade cycle, alongside a contentious debate comparing C#'s complexity against Go's simplicity. Participants disagree on whether the ecosystem's maturity justifies the migration burden and argue over specific language design choices like ConfigureAwait and generics.

306 readable replies · Supporting reply 1 · Supporting reply 2 · Supporting reply 3 · Supporting reply 4 · Supporting reply 5 · Supporting reply 6 · Supporting reply 7 · Supporting reply 8

Showing the three threads with the most distinct people linking this repo, from 29 threads this week.

Mentions over time

HN mentions by month218 dated mentions

Observed mentions: 2025-04-16 17:17:12 UTC to 2026-10-27 23:04:47 UTC.

0102030402025-04-01 00:00:00 UTC to 2025-05-01 00:00:00 UTC (exclusive): 11 mentions; 2 submissions, 9 commentsApr 20252025-05-01 00:00:00 UTC to 2025-06-01 00:00:00 UTC (exclusive): 5 mentions; 1 submissions, 4 comments2025-06-01 00:00:00 UTC to 2025-07-01 00:00:00 UTC (exclusive): 10 mentions; 3 submissions, 7 comments2025-07-01 00:00:00 UTC to 2025-08-01 00:00:00 UTC (exclusive): 5 mentions; 1 submissions, 4 comments2025-08-01 00:00:00 UTC to 2025-09-01 00:00:00 UTC (exclusive): 4 mentions; 0 submissions, 4 comments2025-09-01 00:00:00 UTC to 2025-10-01 00:00:00 UTC (exclusive): 8 mentions; 2 submissions, 6 comments2025-10-01 00:00:00 UTC to 2025-11-01 00:00:00 UTC (exclusive): 3 mentions; 1 submissions, 2 comments2025-11-01 00:00:00 UTC to 2025-12-01 00:00:00 UTC (exclusive): 12 mentions; 6 submissions, 6 comments2025-12-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 8 mentions; 2 submissions, 6 comments2026-01-01 00:00:00 UTC to 2026-02-01 00:00:00 UTC (exclusive): 13 mentions; 4 submissions, 9 commentsJan 20262026-02-01 00:00:00 UTC to 2026-03-01 00:00:00 UTC (exclusive): 14 mentions; 6 submissions, 8 comments2026-03-01 00:00:00 UTC to 2026-04-01 00:00:00 UTC (exclusive): 9 mentions; 1 submissions, 8 comments2026-04-01 00:00:00 UTC to 2026-05-01 00:00:00 UTC (exclusive): 14 mentions; 6 submissions, 8 comments2026-05-01 00:00:00 UTC to 2026-06-01 00:00:00 UTC (exclusive): 9 mentions; 2 submissions, 7 comments2026-06-01 00:00:00 UTC to 2026-07-01 00:00:00 UTC (exclusive): 15 mentions; 6 submissions, 9 comments2026-07-01 00:00:00 UTC to 2026-08-01 00:00:00 UTC (exclusive): 41 mentions; 10 submissions, 31 comments2026-08-01 00:00:00 UTC to 2026-09-01 00:00:00 UTC (exclusive): 11 mentions; 6 submissions, 5 comments2026-09-01 00:00:00 UTC to 2026-10-01 00:00:00 UTC (exclusive): 10 mentions; 1 submissions, 9 comments2026-10-01 00:00:00 UTC to 2026-11-01 00:00:00 UTC (exclusive): 16 mentions; 4 submissions, 12 commentsOct 2026

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
Apr 20252025-04-01 00:00:00 UTC2025-05-01 00:00:00 UTC1129
May 20252025-05-01 00:00:00 UTC2025-06-01 00:00:00 UTC514
Jun 20252025-06-01 00:00:00 UTC2025-07-01 00:00:00 UTC1037
Jul 20252025-07-01 00:00:00 UTC2025-08-01 00:00:00 UTC514
Aug 20252025-08-01 00:00:00 UTC2025-09-01 00:00:00 UTC404
Sep 20252025-09-01 00:00:00 UTC2025-10-01 00:00:00 UTC826
Oct 20252025-10-01 00:00:00 UTC2025-11-01 00:00:00 UTC312
Nov 20252025-11-01 00:00:00 UTC2025-12-01 00:00:00 UTC1266
Dec 20252025-12-01 00:00:00 UTC2026-01-01 00:00:00 UTC826
Jan 20262026-01-01 00:00:00 UTC2026-02-01 00:00:00 UTC1349
Feb 20262026-02-01 00:00:00 UTC2026-03-01 00:00:00 UTC1468
Mar 20262026-03-01 00:00:00 UTC2026-04-01 00:00:00 UTC918
Apr 20262026-04-01 00:00:00 UTC2026-05-01 00:00:00 UTC1468
May 20262026-05-01 00:00:00 UTC2026-06-01 00:00:00 UTC927
Jun 20262026-06-01 00:00:00 UTC2026-07-01 00:00:00 UTC1569
Jul 20262026-07-01 00:00:00 UTC2026-08-01 00:00:00 UTC411031
Aug 20262026-08-01 00:00:00 UTC2026-09-01 00:00:00 UTC1165
Sep 20262026-09-01 00:00:00 UTC2026-10-01 00:00:00 UTC1019
Oct 20262026-10-01 00:00:00 UTC2026-11-01 00:00:00 UTC16412

What Hacker News says

13 sources
It’s probably not really related, but this bug and the saga of OpenAI trying and failing to fix it for two weeks is not indicative of a functional company: https://github.com/openai/codex/issues/9253 OTOH, if Anthropic did that to Claude Code, there wasn’t a moderately straightforward workaround, and Anthropic didn’t revert it quickly, it might actually be a risk-the-whole-business issue. Nothing makes people jump ship quite like the ship refusing to go anywhere for weeks while the skipper fumbles around and keeps claiming to have fixed the engines. Also, the fact that it’s not major news that most business users cannot log in to the agent CLI for two weeks running is not major news suggests that OpenAI has rather less developer traction than they would like. (Personal users are fine. Users who are running locally on an X11-compatible di
Read the rest
stro and thus have DISPLAY set are okay because the new behavior doesn’t trigger. It kind of seems like everyone else gets nonsense errors out of the login flow with precise failures that change every couple days while OpenAI fixes yet another bug.)
In The $100B megadeal between OpenAI and Nvidia is on ice
This came as a big surprise to me last year. I remember they announced that Codex CLI is opensource, and the codex-rs [0] from TypeScript to Rust, with the entire CLI now open source. This is a big deal and very useful for anyone wanting to learn how coding agents work, especially coming from a major lab like OpenAI. I've also contributed some improvements to their CLI a while ago and have been following their releases and PRs to broaden my knowledge. [0] https://github.com/openai/codex/tree/main/codex-rs
In Unrolling the Codex agent loop
Maybe it's changed, but this is certainly how it was back in November. I would see my context window jump in size, after each user turn (i.e. from 70 to 85% remaining). Built a tool to analyze the requests, and sure enough the reasoning tokens were removed from past responses (but only between user turns). Here are the two relevant PRs [0][1]. When trying to get to the bottom of it, someone from OAI reached out and said this was expected and a limitation of the Responses API (interesting sidenote: Codex uses the Responses API, but passes the full context with every request). This is the relevant part of the docs[2]: > In turn 2, any reasoning items from turn 1 are ignored and removed, since the model does not reuse reasoning items from previous turns. [0]https://github.com/openai/codex/pull/5857 [1]https://github.com/openai/codex/pull/598
Read the rest
In Unrolling the Codex agent loop
"At some point I realized that rather than do something else until it finishes, I would constantly check on it to see if it was asking for yet another permission, which felt like it was missing the point of having an agent do stuff" Why don't Claude Code & other AI agents offer an option to make a sound or trigger a system notification whenever they prompt for approval? I've looked into setting this up, and it seems like I'd have to wire up a script that scrapes terminal output for an approval request. Codex has had a feature request open for a while: https://github.com/openai/codex/issues/3052
In Running Claude Code dangerously (safely)
amluto·Jan 15, 2026Submission

Ask HN: Is Codex login down for all workspace (non-personal) users?

OpenAI rolled out a shiny new version of codex (the CLI) that finally supports device code authentication, so now it's finally now awkward to use it in headless environments. And they appear to have disabled the old non-headless variant in the mean time. But trying to use it in a workspace says "Please contact your workspace admin to enable device code authentication". It's not obvious that this setting actually exists, and OpenAI's chat support says, and I quote, "The latest updates require device code authentication, which works for personal ChatGPT accounts but does not work for workspace (Business/Enterprise/Edu) users." An actual human at OpenAI closed the relevant issue as "not planned": https://github.com/openai/codex/issues/9253 Did OpenAI really just decide that it doesn't need to be possible to use the codex CLI on a paid work
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space plan?
6 points · Open discussion

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