Vast.aiReviews of vast.ai

Most of all, the worst technical support including arrogance and ignorance. Internet traffic charges without any notice (as of now, some instances still don't show traffic charge and its amounts). Unreliable instances. They are just one of AI hype boilers.

I rented several machines on vast.ai for long running compute jobs, and I can’t recommend it. Instances went offline at random in the middle of my work, with no warning and no explanation, and I lost hours of unsaved results. The advertised CPU and resources were clearly shared with others, so actual performance was far below what the listing suggested and at times unusable. Your data is entirely at the mercy of whoever hosts the machine; there is no real guarantee it will still be there tomorrow. When things went wrong, support was effectively absent and didn’t seem to care. Cheap prices don’t make up for this. Look elsewhere if your work matters.

Worst company and services also

I rented a “verified” 4 × RTX PRO 6000 machine listed at 2010 Mbps download. In practice it downloaded at about 1 MB/s (roughly 1% of the listing), which I confirmed with a speed test, and a 203 GB model download reached only 8 GB in an hour. I reported it straight away, and soon afterwards the host was no longer shown as verified, which makes me question how hosts are checked in the first place. Support explained that the speed is shared across the whole machine and not guaranteed, but that’s only visible if you hover over the number, not in the listing. Their advice was to try other hosts or Secure Cloud, but Secure Cloud doesn’t offer this GPU, and there’s no way to know whether another host will be any better. I felt misled and paid for GPU time I couldn’t use. I’ve now asked for a refund and hope support will reply. If you need to download large files, be very careful: the providers are unreliable, and I don’t recommend it.

I have rented several servers on runpod. I have ran AI models on it and I faced many issues. Even if a server was advertised with a high internet bandwidth or high available CPU power, it didn't mean the server was actually so powerful. Many times, I understood there was nothing I can do because the download speed of AI models were too slow. Sometimes the machine was too slow. I often had to delete the instance and find a new one. I entitled this review don't trust runpod because the server was disconnected several times. (offline). This means you are logged in the terminal. you get disconnected and it is over, everything you did is lost in a blink of an eye. Sometimes, you receive a notification saying something like "your server is going to get disconnected". In this case, i would not advise anyone to subscribe to a monthly server rent on runpod. For sure, like many other people, i felt like I burnt my credits very quickly. Runpod is too expensive for such poor service reliability.

I have set up and destroyed over 20 instances because I can never access them just a pathetic setup.

I tried to add funds to my Vast.ai balance twice. Both attempts showed an error, but my bank account was still charged, about $35 in total. I received no credits at all. Support told me both transactions had “failed” and that I should simply wait 5–10 business days for the money to return. When I asked for Stripe transaction or reversal references so I could check this with my bank, they only gave me the generic error `card_declined`. So right now I have no credits, no money, and no useful transaction reference — just “wait a few days.” A payment system that can charge the customer while showing an error, followed by support that cannot provide proper transaction details, is a terrible experience. I would not recommend depositing money here until they improve their payment handling and support process.

I rented 10 GPU servers on Vast.ai and it's a complete waste of money. Here are my issues: Catastrophic failure rate: Out of 10 servers, barely 1 starts properly. The others refuse to launch. Awful ComfyUI applications: All the applications offered are outdated and incomplete. They don't start or crash immediately with systematic errors. Permanent errors: No matter what application I try, there's ALWAYS an error. It's become predictable. Suspicious business model: The ONLY applications that work without errors are those that require paying for an API key. That's suspicious. Wasted money: I invested in this platform for nothing. Even the servers that do start don't offer reliable functionality.