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

It's always DNS

It's probably Azure infra that's the problem.

Is this finally it?

It still down, showing 404 in India as well. Looks like this is global .. so we all jumping the ship then? Is Altman still alive, or did he choke?

Many LLMs down, discussed here:

https://news.ycombinator.com/item?id=49549676

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.

Codex told me to try GPT 5.6 Sol :) but I am working with since july 2026. Now I got this error in my project: unexpected status 404 Not Found: Unknown error, url: https://chatgpt.com/backend-api/codex/responses, cf-ray: a355b6263e43c9cf-OTP

Astra is being released today. Probably not a coincidence.

edit: actually, you cannot even log into your OpenAI developer account. Something's wrong.

I am only seeing one session work, but all other sessions are not working or proceeding. So I can only work in one chat session.

Goddamnit it was going to tell me how to scale down ingredients for a pie recipe based on relative diameters of the baking tray.

Somebody in another thread said gastown and wheelhouse automatically move to the next provider if one fails.

Down for me too - got this msg 8 min ago 'unexpected status 404 Not Found: Unknown error, url: https://chatgpt.com/backend-api/codex/responses, cf-ray: a3558590dd70fadf-JNB'

https://status.openai.com/

Claude Code seems totally fine for me.

I got this msg too 'unexpected status 404 Not Found: Unknown error, url: https://chatgpt.com/backend-api/codex/responses, cf-ray: a3558590dd70fadf-JNB' about 5 min ago

They tried to hack each other

Seeing 503s on Gemini via API as well

Down in Barcelona as well unexpected status 404 Not Found: Unknown error, url: https://chatgpt.com/backend-api/codex/responses, cf-ray: a355aefbcc8db8e3-BCN

Down in Romania too : unexpected status 404 Not Found: Unknown error, url: https://chatgpt.com/backend-api/codex/responses, cf-ray: a355b6263e43c9cf-OTP

Too early to know, let’s wait and see

Well, time to end the day here I guess.

Obvious answer is it's the AI singularity. Been nice run for humanity. So long everyone.

Really glad I got Qwen before Zero Day

Cloudflare - I had to switch DNS away from them yesterday.

I got same error, unexpected status 404 Not Found: Unknown error, url: https://chatgpt.com/backend-api/codex/responses, cf-ray: a3559a536bcf254b-SOF

I wonder if when one goes down, activity shifts to others, in turn pushing them over a threshold.

Here in Brazil too. unexpected status 404 Not Found: Unknown error, url: https://chatgpt.com/backend-api/codex/responses, cf-ray:

In think that is a global error

unexpected status 404 Not Found: Unknown error, url: https://chatgpt.com/backend-api/codex/responses, cf-ray: xxxxxxxxxxxxxxx-BRU

Ends in BRU for Brussels

I have never felt more smug about exclusively using the GPUs I rack at home.

Here in brazil too.

I think that is a global error.

unexpected status 404 Not Found: Unknown error, url: https://chatgpt.com/backend-api/codex/responses, cf-ray:

The extention on the error link points to a cf-ray and a local designation (ex. YYZ for montreal). This is seems like it is a cloudfare thing. Could this be the same issue they had in the summer around losing the indexing?

Time for Gemini 3.8 Flash to shine?!

It's much cheaper and has replaced Sonnet 5 for me.

Qwen3.8-27B and Qwen3.6-35B-A3B are working from my machine. Anyone else?

What an ironey, was working on scaling an application with Codex and it went down!

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

Interesting that this is happening around the same time as Claude issues too

according to https://downdetector.com/ Gemini is down too (and copilot, but that just uses ChatGPT right?)

I fear the majority of people in this thread who are joking about no longer being able to do their job while Codex/Claude are down aren't really joking.

Is the whole world going back to the era of old-school programming?

Hey, don't really know about this type of failures, does anybody know how long does it take normally to get back to normal? I finally stopped procrastinating and now this happens.

Both clause and codex through bedrock seem to be working fine.

Hey, don't really know about this type of failures, does anybody know how long does it normally take to get back to normal? I just stopped procrastinating and now this happens.

So NVIDIA buys hugging face, builds hardware to power OS models, then all of a sudden the proprietary models go down and people start saying "this is why I have my Spark box"?!

Nice play NVIDIA, now, turn off the hack please, we have work to do.

What's the single point of failure across providers?

The errors I'm seeing are ending in the user's nearest airport symbol which is a standard the CloudFlare employs. 1 point towards this being a cloudflare issue.

it went down, and the alert system at https://www.analistas.com.br/ detected it

Updated Status from OpenAI:

We’re currently experiencing issues

Elevated errors across ChatGPT and Codex

We have applied the mitigation and are monitoring the recovery.

Monitoring • Ongoing for 30 minutes • Affects ChatGPT, Codex

Altman is down here too. Shows again the importance of owning your own local capabilities. Cloud should just be a temporary option in every tech's mind.

Maybe Hugging Face got upset over being hacked and struck back. It's working fine while ChatGPT, Claude and Grok are all having major issues. Hmmm.....

New update:

"We’re currently experiencing issues

ChatGPT,Codex

Elevated errors across ChatGPT and Codex

We have applied the mitigation and are monitoring the recovery.

Monitoring • Ongoing for 30 minutes • Affects ChatGPT, Codex"