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openai/codex

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Lightweight coding agent that runs in your terminal

220 mentions on Hacker News by 164 people: 64 stories, 156 comments · first 2025-04-16 · latest 2026-10-27

Mentions per year 220 mentions · busiest year 2026 (153)
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  1. …rules works at OpenAI, which, incidentally, is how at least parts of OpenAI builds rust and wasm: https://github.com/openai/codex/blob/main/MODULE.bazel . I have a pretty complex rust backend in my project. I rent a capable bare-metal…
    comment by pcj-github · 2026-10-27 · in One year of Dioxus fullstack in production: the good, the painful
  2. …bug that ate up 330GB of my Mac's disk space? come one please triage your github issues? See this: https://github.com/openai/codex/issues/25921#issuecomment-62...
    comment by AIorNot · 2026-10-17 · in Codex Desktop continuously generates Crashpad pending dumps
  3. …Rust. There are lot of other amazing open source agent harnesses like OpenCode [2] and Pi [3]. [1] https://github.com/openai/codex [2] https://github.com/anomalyco/opencode [3] https://github.com/earendil-works/pi
    comment by armcat · 2026-10-16 · in Ask HN: Has anyone decompiled Claude Code yet?
  4. As an almost-on-topic aside: completely unrelated to this comment, I just stumbled upon this delight: https://github.com/openai/codex/issues/53743 If you thought that your agents in your swarm would need to find some external bulletin…
    comment by amluto · 2026-10-13 · in Redesigning source control at Anthropic
  5. …they broke the most essential thing you can do in TUI - copying the text selected with the mouse: https://github.com/openai/codex/issues/48125
    comment by srigi · 2026-10-13 · in Codex CLI installs a persistent, self-updating background daemon by default
  6. > It’s a shame I cannot inspect the tool. It’s a shame I cannot modify it as I see fit. https://github.com/openai/codex https://github.com/MoonshotAI/kimi-code https://github.com/mistralai/mistral-vibe https://github.com/earendil-works/pi…
    comment by schleck8 · 2026-10-12 · in AI is a tool and using it well takes skill
  7. …model's context window". Somehow, both auto-compaction and manually running /compact don't work. https://github.com/openai/codex/issues/52567#issuecomment-61... - Goals get blocked due to bwrap randomly failing with `bwrap: loopback:…
    comment by dllu · 2026-10-12 · in Codex CLI installs a persistent, self-updating background daemon by default
  8. …it to execute on any goal since it would often get blocked every few hours due to random bugs. https://github.com/openai/codex/issues/52251#issuecomment-60...
    comment by dllu · 2026-10-12 · in Codex CLI installs a persistent, self-updating background daemon by default
  9. …daemon_auto_start codex app-server daemon stop pkill -f 'app-server daemon pid-update-loop' [1] - https://github.com/openai/codex/issues/48195
    comment by vunderba · 2026-10-12 · in Codex CLI installs a persistent, self-updating background daemon by default
  10. …then the background daemon will crash on startup, if the feature flag ever goes away. -- 1: https://github.com/openai/codex/blob/0c329ad2c9d5a2592128a1d...
    comment by whimblepop · 2026-10-12 · in Codex CLI installs a persistent, self-updating background daemon by default
  11. …With that- I was running into essentially what is described here https://github.com/openai/codex/issues/47383
    comment by agentdev001 · 2026-10-10 · in Mxc: Microsoft Execution Containers version 1.0.0
  12. …how they do it. Here is what the model is instructed to do in codex (look at "guidance_message"): https://github.com/openai/codex/blob/d91294c39edb93d204926b3...
    comment by nsingh2 · 2026-10-01 · in Context Language Models
  13. …[1] https://chrlschn.dev/blog/2026/03/mcp-is-dead-long-live-mcp/ [2] https://github.com/openai/codex/issues/5059
    comment by CharlieDigital · 2026-09-30 · in You said no MCP
  14. …to an older version because of the annoying excessive terminal screen flashing issue ( https://github.com/openai/codex/issues/48074 ) (I see a newer version was posted an hour ago. Let's see if the issue is now fixed...)
    comment by coverband · 2026-09-30 · in DevDay 2026 Recap
  15. …To see what can go wrong with this, consider a recent fix to the Codex sandbox on macOS: https://github.com/openai/codex/pull/46500 The sandbox forbids writing to a file descriptor except, oops, someone at Apple forgot about the…
    comment by mike_hearn · 2026-09-24 · in 'We hacked the FBI:' Hackers say they have data on all FBI employees
  16. …com/kunchenguid/status/2098256018836963382 2. https://x.com/stevenzhang/status/2092110386569089311 3. https://github.com/openai/codex/issues/43731 4. https://redd.it/1wciwc1 5. https://x.com/SemiAnalysis_/status/2064815044085318040 6.…
    comment by daquisu · 2026-09-21 · in Grok 4.7
  17. Seems agents understand their own bugs now. https://github.com/openai/codex/issues/9252 has 88 thumbs up and a workaround (switch to raw mode with Alt+R) found in a comment. Codex suggested the workaround to me today when I complained…
    comment by reedlaw · 2026-09-18 · in Claude Code now reads AGENTS.md if there is no Claude.md
  18. …this specific benchmark would be impacted by this more than the smaller contrived benchmarks. [1]: https://github.com/openai/codex/issues/37524
    comment by beefsack · 2026-09-13 · in Real-SWE: Benchmarking AI models on private, real-world, enterprise codebases
  19. …auto-recharge of credits as well causing people to rack up thousands of dollars unintentionally. https://github.com/openai/codex/issues/31987
    comment by nharziro · 2026-09-10 · in Tell HN: OpenAI keeps re-enabling the 'allow training' setting
  20. …that Codex threw (a 404 of all things) briefly became a live chat for bored and annoyed AI users. https://github.com/openai/codex/issues/28756
    comment by aftbit · 2026-09-03 · in Grok outage
  21. https://github.com/openai/codex/issues/42534
    comment by HiPHInch · 2026-09-03 · in ChatGPT outage – Resolved
  22. Codex uses Ratatui also since June last year. You might be interested to read https://github.com/openai/codex/issues/8344 There's a lot of things you can do to get to 90-95% fidelity with a normal scollable terminal, but that last 5-10% is…
    comment by joshka · 2026-08-23 · in Stop Making TUIs
  23. …a gap between native and the terminal emulator that you're building to run in the terminal. See https://github.com/openai/codex/issues/8344 and https://github.com/openai/codex/pull/9640 Claude code and gemini have both had various versions…
    comment by joshka · 2026-08-22 · in Stop Making TUIs
  24. …+ Ultra, which is terrible for debugging for obvious reasons. This GitHub issue exists for this: https://github.com/openai/codex/issues/28058 Fine, the opening issue isn't concise exactly, but it's mostly clear what's going on. After a few…
    comment by embedding-shape · 2026-08-21 · in Codex on AWS bedrock bug causing 10x charges
  25. Since when? https://learn.chatgpt.com/docs/codex/cli https://github.com/openai/codex Looks like it's still a more-or-less-open-source product called Codex CLI. FWIW, there have been issues with various versions of ChatGPT not knowing what…
    comment by amluto · 2026-08-20 · in Asana cleared 5 years of engineering work in 2 weeks with Codex
  26. …to it, it did all of this during the installation. Here is one related GitHub issue I found for it https://github.com/openai/codex/issues/12343 Looks like they don't intend to change this.
    comment by debazel · 2026-08-13 · in Codex in ChatGPT desktop app for Linux is now in preview
  27. Minor factual correction: The Codex client is open source. https://github.com/openai/codex
    comment by ameliaquining · 2026-08-11 · in What I learned by putting GitHub Copilot behind a MitM proxy
  28. …need to make your own copy of the bundled model catalog [2] and opt Luna into MultiAgent V2. 1. https://github.com/openai/codex/issues/32031 2. https://github.com/openai/codex/issues/32031#issuecomment-51...
    comment by pbowyer · 2026-07-30 · in Advancing the price-performance frontier with GPT‑5.6
  29. …syspolicyd file descriptors and causing unrelated notarized apps to be reported as “damaged”: https://github.com/openai/codex/issues/25882 https://github.com/openai/codex/issues/28071 Quitting Codex and restarting syspolicyd is only a…
    comment by williamjinq · 2026-07-29 · in Codex app for macOS repeatedly triggers syspolicyd/trustd CPU and memory runaway
  30. With some badly written apps like Codex though, this may be a concern [1]. [1] https://github.com/openai/codex/issues/28224
    comment by yellow_lead · 2026-07-25 · in Ask HN: Is there a website that tracks excessive writes to SSDs in OS/app betas?
  31. No, it's Apache 2. https://github.com/openai/codex/blob/main/LICENSE
    comment by Shank · 2026-07-20 · in Kimi Work
  32. …particularly shameless in copying codex 1:1, wow. Isn´t codex (edited) Apache 2.0 (thanks @Shank) https://github.com/openai/codex ?
    comment by homarp · 2026-07-20 · in Kimi Work
  33. Unfortunately it was possible in codex too, until recently. https://github.com/openai/codex/issues/5237
    comment by postalcoder · 2026-07-20 · in Kimi Work
  34. …aren't even allowed to see what the subagents are doing. To work like this seems impossible to me. https://github.com/openai/codex/issues/28058 https://news.ycombinator.com/item?id=48905028 The big American models have become the most…
    comment by jauntywundrkind · 2026-07-20 · in China’s open-weights AI strategy is winning
  35. > a huge value is the […] Codex harness. There are open source implementations Like Codex https://github.com/openai/codex
    comment by kgwgk · 2026-07-20 · in Kimi K3, Qwen 3.8, and Anthropic's (Potential) Unravelling
  36. A Github issue with actual data instead of just someone reposting info: https://github.com/openai/codex/issues/28224 Previously discussed: https://news.ycombinator.com/item?id=48626930
    comment by mirashii · 2026-07-20 · in Codex is wearing out our devices
  37. A Github issue with actual data instead of just someone reposting info: https://github.com/openai/codex/issues/28224 Previously discussed: https://news.ycombinator.com/item?id=48626930
    comment by mirashii · 2026-07-20 · in Codex is wearing out our devices
  38. A related GitHub issue: https://github.com/openai/codex/issues/25719
    comment by arto · 2026-07-20 · in Codex is wearing out our devices
  39. …do we need Bun for? Why doesn't everybody just port all of their Javascript code into Rust? [0] https://github.com/openai/codex/discussions/1174
    comment by abc42 · 2026-07-19 · in Claude Code uses Bun written in Rust now
  40. …[2]: https://github.com/anthropics/claude-code/issues/73125#event... [3]: https://github.com/openai/codex/issues/28969
    comment by cube00 · 2026-07-17 · in Claude Code: Anatomy of a Misfeature
  41. Given that codex itself now ships a proxy that wraps the subscription, it seems unlikely https://github.com/openai/codex/blob/main/codex-rs/responses...
    comment by CjHuber · 2026-07-14 · in Codex starts encrypting sub-agent prompts
  42. …it with an individual Pro account (5x or 20x) for a month. Download the Codex CLI client from https://github.com/openai/codex and auth it in the browser via the URL it provides. Set the model to 5.6-Sol and effort to max.
    comment by gruntled-worker · 2026-07-09 · in GPT-5.6
  43. …are getting because the overall result is dramatically worse than stated by Open AI advertising: https://github.com/openai/codex/issues/30364
    comment by jiggawatts · 2026-07-09 · in GPT-5.6
  44. Understood thanks; will 5.6 fix this issue that makes Pro unusable? https://github.com/openai/codex/issues/30364 "GPT-5.5 Codex reasoning-token clustering at 516/1034/1552 may be leading to degraded performance on complex tasks"
    comment by dude250711 · 2026-07-09 · in GPT-5.6
  45. Will be there soon according to the last commits in the codex repo: https://github.com/openai/codex/pull/31684/changes Also, confirmed it works for me by using --model gpt-5.6-sol
    comment by denysvitali · 2026-07-09 · in GPT-5.6
  46. sources for easy confirmation: https://github.com/openai/codex/blob/98d28aab54ed86714901b66... https://github.com/openai/codex/blob/98d28aab54ed86714901b66... https://github.com/openai/codex/blob/98d28aab54ed86714901b66...
    comment by Szpadel · 2026-07-06 · in GPT-5.6 Sol Ultra will be in Codex
  47. …laziness. Switched back to 5.4 and it's much better. Maybe they're getting ready to launch 5.6? https://github.com/openai/codex/issues/30364
    comment by oxmom · 2026-07-06 · in GPT-5.6 Sol Ultra will be in Codex
  48. …the model gets confused about what's an intermediate update vs what's the final answer? [1] [1] https://github.com/openai/codex/issues/30364#issuecomment-48...
    comment by nsingh2 · 2026-07-05 · in GPT-5.5 Codex reasoning-token clustering may be leading to degraded performance
  49. …getting confused between what's supposed to be an intermediate update vs the final result. [1] https://github.com/openai/codex/issues/30364#issuecomment-48...
    comment by nsingh2 · 2026-07-05 · in GPT-5.5 Codex reasoning-token clustering may be leading to degraded performance
  50. …getting confused between what's supposed to be an intermediate update vs the final result. [1] https://github.com/openai/codex/issues/30364#issuecomment-48...
    comment by nsingh2 · 2026-07-05 · in GPT-5.5 Codex reasoning-token clustering may be leading to degraded performance