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Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by Insanity on Thursday September 03, 2026 @11:30AM (#49551656)
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.

Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by erdos_2 on Thursday September 03, 2026 @11:44AM (#49551918)
It'd be funny if this is true because that'd prolly mean nobody is touching Gemini even as a fallback.
Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by gleenn on Thursday September 03, 2026 @12:13PM (#49552425)
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.
Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by ilaksh on Thursday September 03, 2026 @12:15PM (#49552462)
Gemini 3.8 which just came out sounds like it's very good and a great deal though.
Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by HarHarVeryFunny on Thursday September 03, 2026 @03:00PM (#49554964)
Gemini said that?

Gemini is what I mostly use (good enough, basically free - or massively generous free limits, and to me Google as a company is a LOT less objectionable than all the US-based alternatives), but I don't recall it ever saying that.

OTOH, my basic assumption online is that there is no privacy, and free AI in exchange for acknowledged lack of privacy seems fair enough.

Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by Insanity on Thursday September 03, 2026 @11:50AM (#49552022)
Lol I didn't even think about Gemini missing from the list. Not sure what that says about Gemini or me :)
Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by rtcoms on Thursday September 03, 2026 @11:47AM (#49551974)
Just now I got this from gemini

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

Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by exe34 on Thursday September 03, 2026 @11:55AM (#49552117)
I bet they had to implement that manually to make it look like they failed too!
Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by benatkin on Thursday September 03, 2026 @11:51AM (#49552040)
Not even the best agent that starts with a G
Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by sroussey on Thursday September 03, 2026 @12:40PM (#49552892)
I did, for stuff i do in cursor.

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

both are decent.

Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by nevir on Thursday September 03, 2026 @12:41PM (#49552906)
Or that Gemini is built to handle massive load spikes, and/or has a ton of excess capacity
Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by sroussey on Thursday September 03, 2026 @01:44PM (#49553825)
Nope. I am getting Gemini errors now...
Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by bornfreddy on Thursday September 03, 2026 @02:25PM (#49554392)
They probably broke something on purpose so that they are not left out.
Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by joshstrange on Thursday September 03, 2026 @04:50PM (#49556758)
Now I'm just imagining a shared datacenter with Anthropic/Google/OpenAI/SpaceXAI all in the same room and everyone but Google is yelling about things being down, Google looks over at their racks of servers and discretely uses their foot to unplug their section and say "Awww darn! We're down too!".
Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by AIShillsPuke on Thursday September 03, 2026 @06:27PM (#49557993)
The shilling in this cascade of comments is unbearably cringe, make it stop
Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by giancarlostoro on Thursday September 03, 2026 @12:55PM (#49553102)
Someone noted Gemini was also having issues in another thread.
Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by JacobAsmuth on Thursday September 03, 2026 @02:57PM (#49554933)
It could also mean that Google can absorb essentially unlimited demand spikes by load shedding.
Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by aff-vasileva on Thursday September 03, 2026 @03:23PM (#49555321)
Gemini was just waiting for everyone else to go down before remembering it had an outage feature too.
Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by fny on Thursday September 03, 2026 @11:57AM (#49552144)
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.
Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by baq on Thursday September 03, 2026 @12:07PM (#49552333)
It’s cursor’s model so plausible, lots of folks use cursor still.
Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by nevir on Thursday September 03, 2026 @12:43PM (#49552930)
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

Or you have copilot code reviews set up, and it falls back

Etc

Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by pixl97 on Thursday September 03, 2026 @01:04PM (#49553240)
Yep. Too many of us are still thinking that humans are the actors behind a lot of internet behaviors when automated systems/bots/scripts have been causing issues on conventional internet systems for years.

With AI it's even easier to trigger problems like you say. Capacity is so constrained by compute that outages are common. Because outages are common people/AI develop failover systems in their harness. When a big system has issues, suddenly everyone has issues.

It's almost an expected emergent behavior.

Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by wahnfrieden on Thursday September 03, 2026 @02:22PM (#49554338)
Compared with ChatGPT, those services have a minuscule amount of users. It shouldn’t be surprising that a ChatGPT outage causes Claude and others to go down.
Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by paxys on Thursday September 03, 2026 @11:56AM (#49552129)
Especially considering memory/gpu/compute are scarce so these services are likely running with very little buffer.
Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by pixl97 on Thursday September 03, 2026 @01:05PM (#49553251)
Any GPU that isn't running at 100% is a wasted GPU.
Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by toomuchtodo on Thursday September 03, 2026 @11:34AM (#49551734)
https://en.wikipedia.org/wiki/Domino_effect

Edit: Updated per valleyer's suggestion.

Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by valleyer on Thursday September 03, 2026 @11:39AM (#49551821)
"Domino effect" would probably be the more relevant named phenomenon there.
Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by throwaway894345 on Thursday September 03, 2026 @11:40AM (#49551839)
This isn’t a thundering herd problem, it’s a cascading failure. (Thundering herd is about a bunch of workers waking up simultaneously)
Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by v3rm1n on Thursday September 03, 2026 @12:41PM (#49552909)
This is what Tibo posted on twitter in response
Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by Terr_ on Thursday September 03, 2026 @05:04PM (#49556965)
If everyone has the same "Use X or else Y or else Z" cascading list... That reminds me of "The Power of Two Choices in Randomized Load Balancing" (1991) [0] paper, where writeups and visualizations occasionally get posted to HN.

In short, you can get pretty good outcomes for a low cost by picking 2 random alternates, then going with whatever one measures as healthier.

[0] https://ieeexplore.ieee.org/document/963420

Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by throw10920 on Thursday September 03, 2026 @11:30PM (#49560200)
Is this speculation or is there a reason you believe this?
Re:Ask HN: Why are OpenAI, Claude, and Grok simultaneously d... by pampas on Friday September 04, 2026 @07:17AM (#49563067)
It's like a thread tying together two halves; Demand and supply. One stitch breaks and the neighbouring stitch is stressed and it breaks too. You could think of it like a load bearing seam.