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Faiss vs Zilliz Cloud comparison

 

Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Faiss
Ranking in Vector Databases
13th
Average Rating
8.0
Reviews Sentiment
3.3
Number of Reviews
3
Ranking in other categories
Open Source Databases (12th)
Zilliz Cloud
Ranking in Vector Databases
19th
Average Rating
8.6
Reviews Sentiment
7.0
Number of Reviews
2
Ranking in other categories
AI Software Development (27th)
 

Mindshare comparison

As of June 2026, in the Vector Databases category, the mindshare of Faiss is 4.4%, down from 6.7% compared to the previous year. The mindshare of Zilliz Cloud is 1.2%, up from 0.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Vector Databases Mindshare Distribution
ProductMindshare (%)
Faiss4.4%
Zilliz Cloud1.2%
Other94.4%
Vector Databases
 

Featured Reviews

Kalindu Sekarage - PeerSpot reviewer
Senior Software Engineer
Integration improves accuracy and supports token-level embedding
The best features FAISS offers for my team include seamless integration with Colbert and the ability to use FAISS via the Ragatouille framework, which is tailor-made for using the Colbert model. Feature-wise, FAISS allows for more accurate result retrieval, and retrieval speed is also good when comparing the index size. Regarding features, I also emphasize that the usability of FAISS is very seamless, particularly its integration with Colbert and Ragatouille. FAISS has positively impacted my organization by helping us increase the accuracy of retrieval documents; when we store documents in token-level embedding, the accuracy will be high. Additionally, we do not need any external server to host FAISS, allowing us to integrate it with our backend framework, making it a very flexible framework.
PrinceKumar6 - PeerSpot reviewer
cloud engineer at Rishabh Software
Managed vector search has reduced infrastructure overhead and empowers faster AI workloads
Zilliz Cloud has allowed us to focus on building the AI products without the overhead of operating vector database infrastructure. The best features Zilliz Cloud offers, in my opinion, include high-performance similarity search, managed infrastructure for cluster maintaining, infrastructure scaling, backup management, storage planning, Milvus compatibility, and metadata filtering. The offering of this managed infrastructure of a vector database is most useful for me, and the high-performance similarity search is useful in my case. Regarding the similarity search, it delivers low latency retrieval and maintains strong relevance in returned units, which is particularly useful for me. Zilliz Cloud has positively impacted my organization because initially, we spent too much time hosting self-hosted Milvus and planning for infrastructure that did not yield very useful results. Now, we do not have the overhead of managing infrastructure for my vector database, so we can directly focus on building our RAG system and AI workload. Time saved is the first and foremost outcome since all the time we invested in self-hosting Milvus has been redirected towards building the AI workloads. Time has definitely been saved, which is the primary benefit of using Zilliz Cloud.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"The product has better performance and stability compared to one of its competitors."
"I used Faiss as a basic database."
"Zilliz Cloud has allowed us to focus on building the AI products without the overhead of operating vector database infrastructure."
"The best feature of Zilliz Cloud is that it helps in very high-performance vector search, and it is also very scalable, with very low latency that helps provide faster results."
 

Cons

"It would be beneficial if I could set a parameter and see different query mechanisms being run."
"One of the drawbacks of Faiss is that it works only in-memory. If it could provide separate persistent storage without relying on in-memory, it would reduce the overhead."
"It could be more accessible for handling larger data sets."
"It can be improved a little bit on the search functionality."
 

Pricing and Cost Advice

"It is an open-source tool."
"Faiss is an open-source solution."
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Top Industries

By visitors reading reviews
Financial Services Firm
15%
Computer Software Company
10%
Comms Service Provider
9%
Manufacturing Company
8%
No data available
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
No data available
 

Questions from the Community

What is your experience regarding pricing and costs for Faiss?
I did not purchase FAISS through the AWS Marketplace because FAISS is an open-source product. My experience with pricing, setup cost, and licensing is straightforward, as there is no cost for acqui...
What needs improvement with Faiss?
I currently do not think there is anything to be improved based on our experience, as Faiss performs as we expected for our workflow. I would like to see improvement in the fact that FAISS currentl...
What is your primary use case for Faiss?
My main use case for FAISS is in a retrieval-augmented generation project using it with OpenAI, where we use FAISS to store our embeddings created by the Colbert model and for retrieval as well. In...
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Comparisons

 

Overview

 

Sample Customers

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