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.
Edits
Reviews are shown as their authors wrote them. The company can reply, but cannot edit them.
Score
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Emmanuel was very helpful and resolved my issues in a timely manner. Vast rocks!!!!!
KH
Khalid
great services honesty i love the team…
great services honesty i love the team very support and they are best platform i used so far.
JW
J W.
Resolved Host Issue
I had to contact support following a host issue. This issue affected many hosts, so I know the staff were busy working on it. Nick and Anthony helped me resolve the problem successfully. I appreciate your time!
Response from Vast.aiDec 13, 2025
Thank you! And thanks for using Vast.
HN
Henning N.
Best price, sometimes a bit wonky, stellar customer support
Sometimes my instances just stop but that can be ameliorated by aggressive checkpointing. Customer Service is fast and just all around nice.
4/5 for rare infra issues which at this price point is a 5/5 really :)
Response from Vast.aiDec 13, 2025
Hi there,
Thank you for the thoughtful and balanced review :)
You’re absolutely right: with any spot-style / marketplace infrastructure, occasional interruptions can happen, and aggressive checkpointing is the right best practice to minimize impact. We appreciate you sharing that practical tip for other users.
We’re also really glad to hear our support team has been responsive and pleasant to work with! I'll pass that along.
If you ever think an interruption goes beyond the “rare infra issue” category (or if you suspect any data impact), please reach out via support with your instance ID and we’ll take a close look. Sometimes we have a policy to cover certain cases, depending on the server type.
Thanks again for using Vast.ai and for the 4/5 — we’re aiming to earn that full 5/5 on reliability soon!
RA
Raz A.
My experience with Vast.ai has been extremely disappointing and far below any acceptable standard for a cloud computing provider.
I rented a GPU instance for an important project, but the server was suddenly disconnected without warning. After that, I was completely unable to reconnect to the instance — even when the host clearly showed it was back online.
What makes the situation even worse is that I repeatedly contacted support, and they either gave contradictory information or made promises they never fulfilled. I was told that I would be reconnected as soon as the host came online, yet nothing happened. No action, no solution, and no real support.
Meanwhile, Vast.ai continued to charge my account, even though I had zero access to the server. This is unacceptable for a service that claims to be reliable and user-friendly.
My data was stuck on a machine I couldn’t access, my time was wasted for more than 24 hours, and the overall stress caused by their unresponsive support was simply terrible. For a company operating in the cloud computing and AI training space, this level of service is shocking.
At this point, I cannot recommend Vast.ai to anyone who needs a stable, trustworthy GPU provider.
If you care about your time, your data, and your money, be very cautious with this platform.
Response from Vast.aiDec 13, 2025
Hi there — I’m genuinely sorry for what you experienced. Losing access to an instance mid‑project, having your data stuck, and then getting inconsistent answers from support is not acceptable.
Over the weekend we had an incident. In some cases, a host could appear “online” while access to specific instances was still restricted or unstable during recovery. That doesn’t excuse the impact to you — and we should have communicated more clearly and consistently.
You’re also right to call out billing. Being charged while you had zero access isn’t OK. We’ve been issuing refunds/credits for impacted customers in line with a new policy we put in place, and we want to make sure your account was handled correctly and that you’re compensated appropriately.
Please reach out so we can fix this directly:
Reply to your existing support ticket or open a new one from your Vast.ai dashboard, and
link to this Trustpilot review (and please don’t post personal/account details publicly here).
We’ve also added additional mitigations and monitoring to reduce the chance of this happening again, along with improvements to incident handling and communication.
— Vast.ai Support Team
MR
Maunik R.
Severe Downtime, Misleading Support, and Zero Accountability
I honestly don’t even know where to begin. I’ve been dealing with weeks of downtime on my server, and the worst part isn’t even the outage itself it’s how completely abandoned I felt throughout the entire experience. My work, my data, everything I was running… all of it was just suddenly out of reach with no real explanation and no meaningful help.
I kept reaching out to customer support hoping someone would finally give me a straight answer, and instead I got responses that felt dismissive and completely out of touch with what was actually happening. I was told stories about “power outages” and issues that simply didn’t match reality, especially when the host clearly had other machines running just fine. Seeing that and having screenshots to prove it made it feel like I wasn’t being told the truth at all.
It’s incredibly frustrating to trust a platform with important work only to be met with silence, mixed messages, and what felt like excuses. Being without my data for this long genuinely impacted my project, and the lack of transparency made it even worse. You start to wonder if anyone is actually looking into your issue or if you’re just supposed to wait indefinitely and hope your work magically comes back.
I’m writing this because no one should have to go through this level of stress and uncertainty with a service they’re paying for. This whole experience left me feeling disappointed, angry, and honestly a bit betrayed. I really hope the company realizes how damaging this kind of communication and downtime can be for real customers with real work depending on them.
Response from Vast.aiDec 13, 2025
Hi there, I’m truly sorry. Weeks of downtime is painful enough on its own, but feeling ignored, dismissed, or misled while you’re locked out of your work is even worse. You deserved clear answers, real ownership of the issue, and an obvious escalation path and we didn’t deliver that.
This weekend we also had an incident that forced a difficult recovery and restrictions for some users, and we know that for certain customers it compounded ongoing reliability problems. Regardless of the root cause in your specific case, the communication you describe (mixed messages, delays, and a lack of transparency) is on us.
We’ve issued refunds/credits in accordance with a new policy, and we’ve implemented additional mitigations and operational changes to reduce recurrence and improve how we communicate during incidents. While none of that restores the time and stress you lost, we do want to make sure you’re properly compensated.
Please reach out so we can review your case and make it right:
Contact support via your Vast.ai dashboard (or reply to your most recent support thread) and
a link to this Trustpilot review (again, please don’t post private details here).
Thank you for writing this, we take it seriously, and we’re committed to doing better.
— Vast.ai Team
