--- title: ChatGPT, Claude, Codex, and Grok all went down around... description: ChatGPT, Codex, Claude, and Grok all experienced outages within the same time window. OpenAI and Anthropic both acknowledged elevated error rates across their... canonical: https://daily.dev/posts/chatgpt-claude-codex-and-grok-all-went-down-around-the-same-time-cfdtg35lu twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: ChatGPT, Claude, Codex, and Grok all went down around the same time | daily.dev og:description: ChatGPT, Codex, Claude, and Grok all experienced outages within the same time window. OpenAI and Anthropic both acknowledged elevated error rates across their... og:url: https://daily.dev/posts/chatgpt-claude-codex-and-grok-all-went-down-around-the-same-time-cfdtg35lu og:image: https://api.daily.dev/og/posts/cFdTg35LU.png og:image:alt: ChatGPT, Claude, Codex, and Grok all went down around the same time og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # ChatGPT, Claude, Codex, and Grok all went down around the same time **[Collections](https://daily.dev/sources/collections)** · 1 min read · 23 upvotes · 11 comments ## Summary ChatGPT, Codex, Claude, and Grok all experienced outages within the same time window. OpenAI and Anthropic both acknowledged elevated error rates across their services, and users reported Codex was completely unreachable during the disruption. ## Content Several major AI services went down in a narrow window, though there was no single shared cause. Claude and Grok failed first, within four minutes of each other. ChatGPT and Codex followed about 73 minutes later. Anthropic and OpenAI both acknowledged elevated errors across their platforms. The causes were unrelated. OpenAI attributed the ChatGPT and Codex disruption to a routing error. xAI said its Memphis compute center went offline, taking Grok with it. Anthropic fixed Claude's issue but hasn't said what caused it. Worth noting: the outages were limited to closed, proprietary AI services. Open-source models were unaffected. ## Questions this post answers ### Why did ChatGPT, Claude, and Grok all go down around the same time? The outages were caused by unrelated issues rather than a shared root cause. Claude and Grok failed within four minutes of each other, while ChatGPT and Codex went down about 73 minutes later. OpenAI attributed its disruption to a routing error, xAI said its Memphis compute center went offline and took Grok with it, and Anthropic resolved Claude's issue without disclosing the cause. _Teams building on multiple AI providers can track outage patterns like this one on daily.dev to plan for redundancy._ ### Were open-source AI models affected by the ChatGPT, Claude, and Grok outages? No, open-source models were unaffected. The disruptions were limited to closed, proprietary AI services including ChatGPT, Codex, Claude, and Grok, while open-source alternatives continued running normally during the same window. _Developers weighing proprietary versus open-source AI dependencies can follow reliability incidents like this on daily.dev._ ## Community take How the wider developer community reacted, aggregated from 4 discussions and 156 comments across x (as of 2026-09-13). **TL;DR:** Reactions were mostly confusion and jokes as people simultaneously found ChatGPT, Claude, Codex, and Grok down, with speculation ranging from shared cloud infrastructure (Azure, AWS) to conspiracy theories, while open-source/local-model users noted they were unaffected. **Sentiment:** 5% positive · 35% mixed · 60% skeptical **The case for** - Some noted the outage highlighted the resilience benefit of running local or open-weight models. **The pushback** - Many pointed out that competing AI services apparently share the same underlying cloud infrastructure, making simultaneous failures likely. - Some criticized the reliance on 'rented infrastructure' as a systemic fragility. - A few questioned whether the official unrelated-causes explanations were credible given the near-simultaneous timing. **By community** - x (mixed): A flood of short 'me too, it's down for me' replies mixed with joking conspiracy theories and some genuine infrastructure-concentration critique. **Hottest debate:** Whether the four outages were truly independent incidents or evidence that most AI providers secretly share the same cloud/data-center infrastructure. **Open questions** - What actually caused the near-simultaneous outages if the official explanations (routing error, Memphis data center, undisclosed) are unrelated? - How much shared cloud infrastructure (Azure, AWS) underlies supposedly independent AI providers? **Highlights** > @rohanpaul_ai Nothing reminds you how concentrated the underlying cloud plumbing really is quite like every competing AI failing at the exact same time. > — [FpeSre on x](https://x.com/FpeSre/status/2095556223991001204) > @rohanpaul_ai Dont ppl realize they use same cloud providers? > — [cjh4sh on x · 2 points](https://x.com/cjh4sh/status/2095710362528354648) > @rohanpaul_ai the staggered timing shows it wasn't a single server failure but likely a cascading infrastructure bottleneck. > — [VitalijMatros on x · 1 points](https://x.com/VitalijMatros/status/2095719440478314752) > @Thom_Wolf The reality of rented infrastructure. This anomalous event shows the important of open source and owning your own sovereign stack. > — [Secondmindsys on x](https://x.com/Secondmindsys/status/2095566801459364307) > @rohanpaul_ai my conspiracies: 1. iranians 2. Teh ASI 3. Aliens > — [SirMrMeowmeow on x · 9 points](https://x.com/SirMrMeowmeow/status/2095653831715815455) **Source threads** - [x](https://x.com/seanallen_dev/status/2095524182498893926) · 0 points · 73 comments - [x](https://x.com/rohanpaul_ai/status/2095547998994563296) · 0 points · 23 comments - [x](https://x.com/rohanpaul_ai/status/2095651097545494923) · 0 points · 37 comments - [x](https://x.com/Thom_Wolf/status/2095563500940624129) · 0 points · 23 comments ## Community discussion Top comments from developers on daily.dev. **@nerdalytics** · 8 upvotes > SpaceX data center issues? They all rent SpaceX compute AFAIK **@llaravell** · 3 upvotes > Sometimes, these events serve as a stark reminder of how heavily we rely on AI. **@hardik15** · 0 upvotes > Way to go for Google, with Gemini. !! **@wxtx** · 0 upvotes > I SERIOUSLY wonder what has happened? **@byteoutlaw** · 0 upvotes > Sounds interesting.. > > > 🤣 > > > Thought maybe a cascading failure but naah not sure. ## Similar posts on daily.dev - [Claude is down as Anthropic investigates errors across its services](https://daily.dev/posts/claude-is-down-as-anthropic-investigates-errors-across-its-services-pz5pffz7s) · The Next Web · 13 upvotes · 0 comments - [The cloud outage that should terrify the CIO](https://daily.dev/posts/the-cloud-outage-that-should-terrify-the-cio-cmtyssior) · InfoWorld · 0 upvotes · 0 comments --- Tags: [#chatgpt](https://daily.dev/tags/chatgpt), [#claude](https://daily.dev/tags/claude), [#grok](https://daily.dev/tags/grok), [#openai-codex](https://daily.dev/tags/openai-codex) [View this post on daily.dev](https://daily.dev/posts/chatgpt-claude-codex-and-grok-all-went-down-around-the-same-time-cfdtg35lu) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"ChatGPT, Claude, Codex, and Grok all went down around the same time","url":"https://daily.dev/posts/chatgpt-claude-codex-and-grok-all-went-down-around-the-same-time-cfdtg35lu","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/chatgpt-claude-codex-and-grok-all-went-down-around-the-same-time-cfdtg35lu"},"datePublished":"2026-09-03T16:22:59.816Z","dateModified":"2026-09-13T20:05:27.330Z","description":"ChatGPT, Codex, Claude, and Grok all experienced outages within the same time window. OpenAI and Anthropic both acknowledged elevated error rates across their...","image":"https://pbs.twimg.com/media/HRTgm73aAAIg22K.png","thumbnailUrl":"https://pbs.twimg.com/media/HRTgm73aAAIg22K.png","isAccessibleForFree":true,"articleSection":"Collections","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Collections","logo":"https://media.daily.dev/image/upload/s--fk_6ycEi--/f_auto,q_auto/v1780996001/logos/collections?_a=BAMAMiWQ0","url":"https://daily.dev/sources/collections"},"commentCount":11,"discussionUrl":"https://daily.dev/posts/chatgpt-claude-codex-and-grok-all-went-down-around-the-same-time-cfdtg35lu","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":23},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":11}],"keywords":"chatgpt,claude,grok,openai-codex","timeRequired":"PT1M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Collections","item":"https://daily.dev/sources/collections"},{"@type":"ListItem","position":3,"name":"ChatGPT, Claude, Codex, and Grok all went down around the same time"}]} {"@context":"https://schema.org","@type":"WebPage","@id":"https://daily.dev/posts/chatgpt-claude-codex-and-grok-all-went-down-around-the-same-time-cfdtg35lu","comment":[{"@type":"Comment","text":"SpaceX data center issues? They all rent SpaceX compute AFAIK","datePublished":"2026-09-03T16:27:12.920Z","url":"https://daily.dev/posts/cFdTg35LU#c-DXxmDDH22","author":{"@type":"Person","name":"nerdalytics","url":"https://daily.dev/nerdalytics","image":"https://avatars.githubusercontent.com/u/97166791?v=4"},"interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":8}},{"@type":"Comment","text":"Sometimes, these events serve as a stark reminder of how heavily we rely on AI.","datePublished":"2026-09-04T07:05:44.565Z","url":"https://daily.dev/posts/cFdTg35LU#c-SseKGG6no","author":{"@type":"Person","name":"Taha Shokri","url":"https://daily.dev/llaravell","image":"https://lh3.googleusercontent.com/a/ACg8ocLiwIPy9ir8m0LZX1MGI8uN3t4N_NEfvugyyU9S_LFpmEcnwgQ=s96-c"},"interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":3}},{"@type":"Comment","text":"Way to go for Google, with Gemini. !!","datePublished":"2026-09-04T11:09:09.368Z","url":"https://daily.dev/posts/cFdTg35LU#c-NLzwWDGr3","author":{"@type":"Person","name":"Hardik","url":"https://daily.dev/hardik15","image":"https://media.daily.dev/image/upload/s--O0TOmw4y--/f_auto/v1715772965/public/noProfile"}},{"@type":"Comment","text":"I SERIOUSLY wonder what has happened?","datePublished":"2026-09-04T09:56:12.332Z","url":"https://daily.dev/posts/cFdTg35LU#c-TGMASCO8Y","author":{"@type":"Person","name":"WojtekXTX","url":"https://daily.dev/wxtx","image":"https://media.daily.dev/image/upload/s--slav3kNg--/f_auto/v1788199427/avatars/avatar_y6NTB6llakYmLSelD0bZh?_a=BAMAMicg0"}},{"@type":"Comment","text":"Sounds interesting…\n🤣\nThought maybe a cascading failure but naah not sure.","datePublished":"2026-09-05T09:33:12.970Z","url":"https://daily.dev/posts/cFdTg35LU#c-8B4EDsR2b","author":{"@type":"Person","name":"Jacob B. Bonde","url":"https://daily.dev/byteoutlaw","image":"https://media.daily.dev/image/upload/s--veTChHK7--/f_auto/v1733220070/avatars/avatar_5cQvIZKr5tDFDotVDjulg"}}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/chatgpt-claude-codex-and-grok-all-went-down-around-the-same-time-cfdtg35lu#faq","mainEntity":[{"@type":"Question","name":"Why did ChatGPT, Claude, and Grok all go down around the same time?","acceptedAnswer":{"@type":"Answer","text":"The outages were caused by unrelated issues rather than a shared root cause. Claude and Grok failed within four minutes of each other, while ChatGPT and Codex went down about 73 minutes later. OpenAI attributed its disruption to a routing error, xAI said its Memphis compute center went offline and took Grok with it, and Anthropic resolved Claude's issue without disclosing the cause. 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