Vast.aiReviews of vast.ai

Highly disappointing. Despite logs showing startup completion, initialization took over 10 minutes and the UI never loaded—stuck on "running" the entire time. I was charged $1.70 for ~20 minutes of completely non-functional service. Support claimed the charge was only $1.20 for a model download, which is an unacceptable excuse for downtime and unfair billing. Unreliable performance and poor support make this service completely unusable. I will not be returning.

!! DO NOT USE !! On top of the price/h of your specific server you will be also charged ungodly amounts for ***internet bandwidth*** in my case it was $2.5/100gb. keep in mind that i only used the instance for 20 minutes. On top of that, if you don't stop the instance before destroying THEY WILL charge you further as they still consider it to be running. Didn't have that problem before, no idea what's going on here but at this point it's just a scam.

Instance hosting doesn't work anymore. My business relied on it. Support doesn't seem to care at all nor trying to help. Do not get lured into this shit. Use other providers instead. Had no issues with Cloudzy so far and their support is incredible.

I rented a high-end GPU server (RTX 3090 Ti) on Vast.ai with strong specs and a price around $0.143/hour (~0.54 SAR/hour). However, the service is practically unusable. The main issue is SSH connection failure: Authentication failed (publickey) I did everything correctly: - Generated a valid ED25519 key - Added it to the platform - Selected it in my SSH client - Used the correct host, port, and username Still, it fails. Support response was extremely weak: They only told me to check documentation, use -vvv debug, or try another instance. No real help. No actual fix. Other problems: - SSH keys do not apply correctly to instances - Some containers (like Jupyter images) are unclear or broken for SSH access - The system forces manual debugging instead of working out of the box - Copy/paste limitations make it worse on mobile - Sent multiple emails — no proper response Conclusion: Strong hardware, but very poor system design and support. Not recommended.

My experience with VAST.ai has been extremely disappointing and frustrating. The service advertises GPU instances, but in practice many of these appear to be containerized environments rather than true dedicated machines. This creates serious reliability concerns for users who require stable and predictable infrastructure. One of the most problematic issues is that when an instance is stopped, it often disappears from availability. When attempting to restart it, the system simply goes into scheduling mode for extended periods without successfully launching the instance. For users running workloads that depend on consistent GPU availability, this behavior makes the platform highly unreliable. In addition to the infrastructure issues, the quality of customer support was also very unsatisfactory. My interaction with a support agent named Saber did not lead to any meaningful resolution, and the responses I received lacked clarity and helpfulness. For a platform providing paid GPU infrastructure, a much higher standard of technical support should be expected. Overall, the experience gave the impression of an unstable platform with insufficient support for customers. For users considering VAST.ai for serious workloads, I strongly recommend carefully evaluating the platform and its reliability before committing to it. I hope the company takes these concerns seriously and improves both its infrastructure stability and the quality of its customer support.

Tous les pc virtuel qu'ils ont sont morts ile ne fonctionne pas, je ne recommande pas du tout j'ai été débité alors que je n'ai pas utilisé la machine et ils ne veulent pas me rembourser. Bref escroc, passez votre chemin!!!

Service is not good, your instance gpus can get scheduled from another guy and you have to copy data which costs bandwidth to another instance just so you can open another even if its targeted as "on demand" your still off better going for competitor sites i dont recommend it at all. Customer service is bad as well they seem like they get paid minimum wage and dont even care to help you just give you some copy pastes or some ai bs

Incredibly frustrating some machines fail to do even the most basci things