Vast.ai is a global GPU marketplace. Use one simple interface to search the marketplace and rent powerful cloud GPUs at reasonable prices. Save 5-6X vs major competitors on cloud GPU rental rates.
Vast.ai (vast.ai) has 249 customer reviews on Five Star Index, with an average rating of 4.2 out of 5.
Website
vast.ai
Category
IT & Communication
Location
Los Angeles, California
Listed on Five Star Index
2026
About these reviews
Replies
The company replied to 16% of reviews.
Latest
Most recent review: October 2026.
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Reviews are shown as their authors wrote them. The company can reply, but cannot edit them.
Score
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scam website. always throttles your download speed to get more money out of you and never refunds it, many instances break or don't work and you're of course charged and not refunded.
Customer support don't do anything they're useless - complete scam I will never be using this website again.
Response from Vast.aiJan 4, 2024
Hello,
It sounds like you got fairly frustrated using our service. The download speeds can vary depending upon your Internet connection, the way you are connecting to the server, and other factors. The Cloud sync option typically ensures the data transfer is saturated at maximum capacity.
You can stop the instance which stops all GPU rental charges and then download your files. That would have saved you any GPU charges incurred while waiting.
I'll request information through TP here and see if we can't refund some of your charges for your fustration.
TT
tt
machine down randomly, all data lost
machine down randomly, without any notice.
all data can be lost at any time!!!
Response from Vast.aiJan 4, 2024
Hello,
We have chat support to investigate all issues with Vast.ai GPU instances. Instances can go momentarily offline or be stopped for different reasons, such as running out of allocated instance disk space or billing/payment issues. Data is still accessible from stopped instances. We will need more information to investigate to see what happened to your instance.
MT
Md Toki T.
Best platform for LLM training at low…
Best platform for LLM training at low cost!
Thanks!
TS
Tamás B.
Nick
Nick, as a chat assistant, shines with his exceptional knowledge and approachable style. He provides precise, thoughtful responses promptly, making complex topics easily understandable. His friendly demeanor and expertise make every interaction both helpful and enjoyable.
TA
Tail
Incredible support people there
Incredible support people there. Super fast support responses. I had a hiccup with my first GPU instance there but they guided me in the right direction and stayed with me until I had a proper instance running.
I love the service already.
ZE
Zemuntu
Vast ai not fit for purpose and not as described. A digital con
Worst service and support I have ever had renting anything ever. That’s weird given how often I rent stuff. They will blame you or accuse you of things just to avoid refunding you. Getting a refund nearly impossible.
A second account was opened but in my name and using the same details. Being technically uneducated i thought that would resolve matters. We also wanted to determine if issues would be resolved if a different account was used.i also wanted wanted evidence as they delete messages once chat ends and so I didn’t get much by way of snap shots. I have some that show their conduct merely wanted more. But the same issues persisted and more so I know several people who have had similar experiences based in other countries, in their hundreds. None of them have complained, many have simply changed service but I did not because such services are hard to find in Europe.
With regards to Vast.ai I approached them for technical support on many occasions but they refused to help. Their responses consistently were the machine is ok, or you should chose a verified machine. Yet most, if not all my machines were varified. When 70 pounds was offered, i accepted it because they told me that no refunds were available and that’s the maximum they are allowed to give me. Their machines would stop working for a significant part of the night and day and yet they would charge me.
I would destroy them virtually to avoid storage charges which never stopped, even when their machines were not working. For the entire term. They will never admit wrong doing and instead will blame you as a customer just because they want to keep your money, at any cost. This experience is not mine alone, it is the experience of many. There are people in their discord raising these concerns. I am getting testimonials from people who have had similar experiences with them. I will be ready for them.
They are not acting in good faith. The product or service is not fit for purpose and is certainly not as described. And yet they have kept my money. That’s not honest. Blaming me is silly. They also kept taking money from my bank account long after i reduced the threshold to zero. Their explanation was that their system had just been updated. I had to block them with my bank. This too made opening an account necessary. My experience was unpleasant and didn’t want a repeat. I also didn’t want them to tartget me through their chats. They had already demonstrated a determination to blame a customer for their incompetent service. Their service is not fit for purpose nor as described.
I am the one who even told them the other account is mine by seeking their help. No restrictions exist that I can’t have another account. I used my name and the same address, albeit I was getting help. Nobody was trying to hide. The fraud allegation is a smoke screen to hide the fact that my bank is asking them to disprove my claims. They can win this if they show that I am lying. They know that I am not. Not an honest bunch. I have 2 accounts and not multiple. Making it seem like I have ten.
No refund offered they now claim? How can that be lawful or right, when you offered a defective service. They will keep your money even if their machines don’t work and I am the one committing fraud? Make that make sense to me. I am not disputing all charges, I spent thousands there. Merely a few that didn’t work.
They have just posted my personal information here, namely my emails. This business is vile, and criminal. Was just in their discord and there are other people there raising the same concerns.
Trust pilot has found that they posted personal information about me. They have deleted their post. But will reply to defend nonsense and dishonest conduct. Simply put, don’t charge me for providing a defective service. Subscription merely means I had your services for a fee. They didn’t work, but you charged me for that period. I disputed nearly all but not all, and rightly so. I will update this when the process is over.
Been attacked by them for the last 2 hours. None stop.
Response from Vast.aiNov 19, 2023
This user (who is using an alias here) created multiple accounts with several aliases when talking to our customer support. He manually added credit at least 21 times between 10/07 and 11/14 for a total over over $3000 to mine crypto (unsupported, against TOS) and was even gifted $70 in compensatory free credit on 10/24. Then on 11/17 he disputed almost ALL of his past charges - dating back to 10/18, shortly after his first purchase. In the dispute(s) he claims we failed to "cancel his subscription", which is bogus because 1.) we don't offer any subscription service whatsoever, 2.) our TOS clearly state that all credit sales are final - we don't refund spent credits, and 3.) he continued to add credit manually dozens of times for a month after his claimed "cancellation attempt" of the non-existant subscription service, spending thousands on crypto currency mining. He also added credit using the automated billing feature, but most of the credit was added manually, long after the claimed dispute date.
This user has attempted illegal chargeback fraud and we will be pursuing legal action. The customer isn't always right; some customers are fraudsters
AB
Abhishek
FloatScale.com launched its AI Data…
FloatScale.com launched its AI Data Center and soon needed to fill capacity quickly. Vast.ai has the best expertise in this. As early adopters we don't seek perfection just mutual understanding. Vast.ai support helped us out within minutes. You can't get that anywhere else. The world is changing for the better and companies like ours are set to accelerate things together. Thank you!