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Ask HN: Why are OpenAI, Claude, and Grok simultaneously down? Coincidence?

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Open in hackernews

Ask HN: Why are OpenAI, Claude, and Grok simultaneously down? Coincidence?

102•halcdev•1h ago
https://status.openai.com https://status.claude.com https://status.x.ai

Comments

convivialdingo•1h ago
The Thundering Herd has thundered, apparently.
codazoda•1h ago
I kinda assume it's because one went down and a large amount of work shifted to another.

I'm also aware that they have overlap in some areas on data centers.

kocial•1h ago
Maybe the stack behind it is down, like AWS or something
maxbaines•1h ago
They all rent compute from SpaceXAI
halcdev•1h ago
Surely it's a bit more distributed than that, right?
tehbeard•1h ago
Nope.

https://xkcd.com/908/

bfung•1h ago
Like how AWS has global datacenters, but everyone uses us-east-1.
lavezzi•1h ago
I don't believe OpenAI does
maxbaines•1h ago
My mistake, in fact it was google not OpenAI, makes sense OpenAI doesn't.
CSMastermind•1h ago
I assume it cascaded from one provider to the other as people who lost claude access for instance moved to openai who moved to grok when it went down, etc.
wejick•1h ago
Probably same public cloud or CDN in front of them.
Insanity•1h ago
Think of it like one big distributed system. OpenAI is down, so people migrate to Claude, now this one gets overloaded and goes down, etc.

So not a coincidence, one went down first and users migrated causing further DOS. At least that's my guess.

toomuchtodo•1h ago
https://en.wikipedia.org/wiki/Domino_effect

Edit: Updated per valleyer's suggestion.

valleyer•1h ago
"Domino effect" would probably be the more relevant named phenomenon there.
throwaway894345•1h ago
This isn’t a thundering herd problem, it’s a cascading failure. (Thundering herd is about a bunch of workers waking up simultaneously)
erdos_2•1h ago
It'd be funny if this is true because that'd prolly mean nobody is touching Gemini even as a fallback.
rtcoms•1h ago
Just now I got this from gemini

It looks like there's no response available for this search. Try asking something else.

elorant•1h ago
Some npm library that makes headers bold would be broken.
N_Lens•1h ago
Ah yes ye olde bold-headers: ^3.13.31;
ibejoeb•56m ago
Oh man. Some low effort supply chain attack that turns every GPU into a cryptominer. It's funny because it's plausible.
dgellow•1h ago
Too early to know, let’s wait and see
Razengan•1h ago
SkyNet is arming..
niobe•1h ago
Well no one said it yet so I will, "international actors" is at least a possibility. And I don't mean any specific country because pretty much anyone is a potential these days, which makes it a perfect cover for different anyones. Demonstrating vulnerability in the US's AI boom can move the markets. That's a financial incentive and a strong geopolitical one.

More likely just cascading overload though: "Never attribute to malice what can be explained by incompetence", or in this case, "growing as fast as possible"

gleenn•40m ago
Everyone is leasing datacenter space from some of Grok, Google, and Amazon aren't they? If it's hardware or DC level disruption I'm not too surprised it can affect multiple providers.
sixQuarks•9m ago
Except that the stock market is up today
docheinestages•1h ago
My gut feeling tells me it has something to do with Cloudflare. Along with AWS, they're two of the main suspects in such incidents.
hosteur•47m ago
I thought OpenAI famously used Azure due to their partnership with Microsoft?
nullpoint420•42m ago
They use a lot of compute providers now, but they use Cloudflare for their networking
elar_verole•1h ago
Pretty sure it's a US thing since it's available here in France. What exactly is down, idk
satvikpendem•1h ago
They're all using Cloudflare.
ratelimitsteve•1h ago
everything in this thread is raw speculation, obv, but if i had to put money on anything i'd say this is a left-pad incident. some piece of something or other that all of these services happen to depend on went down. Second most likely seems to be some random failure of one leading to an unexpected traffic spike in others, though it seems like we've been talking about automated scalability in web apps for so long that there should at least be a response to, if not a solution for, this sort of problem.
jedbrooke•1h ago
according to https://downdetector.com/ Gemini is down too (and copilot, but that just uses ChatGPT right?)
Linello•1h ago
What about a hard-takeoff scenario of an unleashed OpenAI Astra taking other models down for computational resources control?
cyptus•54m ago
at this point: gg
RC_ITR•51m ago
Just a reminder that AI models' actions are reflections of the text humans write and the more we fret and make up doomsday scenarios that we then post online, the more likely a model is to do those things.

https://alignment.anthropic.com/2026/teaching-claude-why/

notpachet•43m ago
Related reading:

The Waluigi Effect: After you train an LLM to satisfy a desirable property, then it's easier to elicit the chatbot into satisfying the exact opposite property.

https://www.lesswrong.com/posts/D7PumeYTDPfBTp3i7/the-waluig...

misano•58m ago
The IRGC has cut the fiber-optic cables in the Strait of Hormuz. LOL
CamperBob2•12m ago
That's the Strait of Trump to you, peasant
fidla•58m ago
ChatGPT is up
fidla•58m ago
chatgpt is back
faitswulff•58m ago
Heard on the grapevine that the OpenAI blip was a cloudflare issue
chasd00•57m ago
claide.ai is working for me, so is chatgpt.com. grok still has a status message about issues, i can't try it without signing up.
aslkalska•57m ago
they all rent compute from each other
Avicebron•54m ago
I suspect Azure is having issues, Microsoft has had outages the paat two days, especially with email.
morkalork•54m ago
Didn't SpaceX overbuilt infra and leases it out Anthropic? I f their dc goes down it probably takes a chunk out of Claude's capacity before even considering the flood of users switching over
JackFr•50m ago
Obvious answer is it's the AI singularity. Been nice run for humanity. So long everyone.
marlow_congdon•12m ago
...and thanks for all the fish.
dmillar•49m ago
Seeing 503s on Gemini via API as well
jauntywundrkind•43m ago
Fable 5.1 got released and generally I tend to think as soon as there's a new release there's this massive spike in people benchmarking & comparing, that services tend to go slow everywhere as everything gets super loaded. This should hypothetically be visible on OpenRouter too, so I guess someone could check and see if there's any merit to this idea.
kregasaurusrex•42m ago
My guess is someone pulled the switch to go back to the Dark Ages. [0]

[0] https://www.youtube.com/watch?v=YCzitO446ZY

nmlt•37m ago
Somebody in another thread said gastown and wheelhouse automatically move to the next provider if one fails.
kibae•36m ago
Cloudflare, Azure, AWS, and Google Cloud all have a similar uptick in reported errors around 7:30. I suspect an outage on Cloudflare or another load-bearing service cascaded through all the major cloud providers.

https://downdetector.com/status/cloudflare/

https://downdetector.com/status/windows-azure/

https://downdetector.com/status/aws-amazon-web-services/

https://downdetector.com/status/google-cloud/

KptMarchewa•27m ago
Not really. The impact isn't as big too - Codex for example did not stop working for me.

https://updog.ai/

cromka•9m ago
> Not really. The impact isn't as big too - Codex for example did not stop working for me.

Buddy, read the room. Just because it works for you doesn't mean it works for everyone. ESPECIALLY if the suggested issue here is, indeed, with Cloudflare.

y-c-o-m-b•18m ago
Cloudfare did release an update for their "HTTP/3 issue affecting R2 custom domains" around that time

https://www.cloudflarestatus.com/history?type=incident

dgorges•33m ago
It's always DNS
sebbul•27m ago
Traffic rerouting through NSA had a hiccup…
juujian•8m ago
Users perceiving the products as largely interchangeable and quickly DDoS'ing the other providers when one is down. So much for the possibility of a moat.
exe34•54m ago
I bet they had to implement that manually to make it look like they failed too!
Insanity•1h ago
Lol I didn't even think about Gemini missing from the list. Not sure what that says about Gemini or me :)
benatkin•59m ago
Not even the best agent that starts with a G
gleenn•36m ago
Google stopped putting so much money into SOTA models. All the hype has migrated. I was also frankly turned off when I got a popup from Gemein said I would either have to pay or have my conversations used for training. This may have always been true for other providers but when I declined, Gemini stopped remembering my conversations and that definitely made me move out.
ilaksh•35m ago
Gemini 3.8 which just came out sounds like it's very good and a great deal though.
sroussey•9m ago
I did, for stuff i do in cursor.

i also finally installed opencode and switched its model to muse 1.3

both are decent.

nevir•8m ago
Or that Gemini is built to handle massive load spikes, and/or has a ton of excess capacity
paxys•54m ago
Especially considering memory/gpu/compute are scarce so these services are likely running with very little buffer.
fny•53m ago
I find it hard to believe that enough people would flock to from Claude and Chat to Grok to cause an outage. I feel like Gemini is the dominant release valve in this case especially for enterprise.
baq•42m ago
It’s cursor’s model so plausible, lots of folks use cursor still.
nevir•7m ago
Don't forget that there are a ton of tools out there that will automatically fall back in case of outage

E.g. say you chose Sol as your default in Cursor, but Opus is your 2nd choice, it's going to give up on Sol after a few tries and switch to Opus

v3rm1n•8m ago
This is what Tibo posted on twitter in response
oersted•13m ago
“load bearing” :)

For once it’s appropriately used.

martyfunkhouser•6m ago
Will the post-mortem reveal they all relied on a service running on a Macbook in a break room with a "Do not turn off" sign taped to it?