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Faiss vs MySQL comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Jan 23, 2025

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 Open Source Databases
14th
Average Rating
8.0
Reviews Sentiment
3.3
Number of Reviews
3
Ranking in other categories
Vector Databases (15th)
MySQL
Ranking in Open Source Databases
1st
Average Rating
8.2
Reviews Sentiment
7.0
Number of Reviews
152
Ranking in other categories
Relational Databases Tools (5th)
 

Mindshare comparison

As of November 2026, in the Open Source Databases category, the mindshare of Faiss is 2.9%, down from 3.5% compared to the previous year. The mindshare of MySQL is 12.7%, up from 8.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Open Source Databases Mindshare Distribution
ProductMindshare (%)
MySQL12.7%
Faiss2.9%
Other84.4%
Open Source 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.
Amandeep Pawar - PeerSpot reviewer
Engineer Technology at Iris Software Technologies Private Limited
Careful data design has delivered consistent transactions and supports reliable microservices
MySQL is a reliable and mature relational database, but there are a few areas where it could be improved. One area is horizontal scalability. While MySQL supports scaling for applications, handling write-heavy workloads often requires additional solutions such as sharding, which adds complexity. Another area where it could improve is in native support for advanced analytics and large-scale distributed processing, which may require specialized databases. Changing the database schema on large tables can also be challenging and may require careful planning to minimize downtime. Performance tuning is powerful, but identifying and optimizing slow queries often requires manual analysis and experience. Having more built-in performance insights and automated optimization recommendations would be helpful for administrators. In terms of documentation and security, I think MySQL could be improved in those areas. While the official documentation is comprehensive, it can sometimes be difficult for beginners to navigate, especially for advanced topics such as application partitioning and query optimization. More practical examples and architecture-focused guides would be beneficial. On the integration side, MySQL already works well with frameworks such as Spring Boot and Hibernate, but enhancing support for modern cloud-native deployments, Kubernetes, and automated observability would simplify operations. MySQL is a mature and dependable database, and I hope to see improvements primarily around administration, better operational tooling, and a smoother developer experience rather than fundamental database capabilities.

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."
"As a developer I have used many database engines but MySQL is by far the best known and most popular Open Source database engine."
"For anyone who wants to learn SQL, MySQL is free on Linux, Windows, or Mac Operating Systems."
"It has provided a low-cost, high-availability solution without complex active/standby management using Linux HA."
"The feature that I have found most valuable is its ubiquity, as MySQL is everywhere, so if I need to find a developer to do things to it that I don't know, it's very easy to find someone who has expertise in it."
"My organization has experienced positive impacts from MySQL, as it provides exceptional capabilities."
"Setup is easy. MySQL of various flavours has community editions to easily test, deploy, and run.​"
"The deployment process is pretty fast."
"The most valuable feature of MySQL is its reliability and performance."
 

Cons

"It would be beneficial if I could set a parameter and see different query mechanisms being run."
"It could be more accessible for handling larger data sets."
"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."
"The technical support should be more knowledgeable and available worldwide."
"Clusters are hard to perform so we use no SQL alternates like MongoDB."
"The tool needs to improve table visualization."
"MySQL's performance requires attention. For optimal performance, one should review and sometimes revise the code, particularly when using server-side scripting."
"It would be helpful if there were a graphical user interface to administer, configure, and tune it."
"Rather than going in-depth about the technical features, which a technical person can directly tell, I would say that MySQL should be able to adapt to the next framework. The 5G framework means an unstructured framework. So if MySQL becomes smoother and more adaptable, it'll be easier."
"In MySQL, we need to define every table beforehand."
"Integration is a key feature in need of improvement."
 

Pricing and Cost Advice

"Faiss is an open-source solution."
"It is an open-source tool."
"MySQL is released under an open-source license, so you have nothing to pay to use it."
"It is free. It is an open-source platform."
"I use a free version at present."
"It's free."
"We're using the open-source version right now, which is free. I do see some value in some of the more enterprise functions. We're using the open-source version right now, and I was interested in the MySQL Enterprise version really for the tools that they provide, but we decided not to make the purchase."
"MySQL is a free and open-source solution."
"We've never bought a commercial license. We just use the open-source community edition."
"It's cheaper than other solutions."
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Use our free recommendation engine to learn which Open Source Databases solutions are best for your needs.
920,574 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Financial Services Firm
15%
Comms Service Provider
11%
Manufacturing Company
9%
Computer Software Company
8%
Outsourcing Company
11%
Manufacturing Company
9%
Financial Services Firm
8%
Comms Service Provider
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business75
Midsize Enterprise34
Large Enterprise64
 

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...
Why are MySQL connections encrypted and what is the biggest benefit of this?
MySQL encrypts connections to protect your data and the biggest benefit from this is that nobody can corrupt it. If you move information over a network without encryption, you are endangering it, m...
Considering that there is a free version of MySQL, would you invest in one of the paid editions?
I may be considered a MySQL veteran since I have been using it since before Oracle bought it and created paid versions. So back in my day, it was all free, it was open-source and the best among sim...
What is one thing you would improve with MySQL?
One thing I would improve related to MySQL is not within the product itself, but with the guides to it. Before, when it was free, everyone was on their own, seeking tutorials and how-to videos onli...
 

Comparisons

 

Overview

 

Sample Customers

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Facebook, Tumblr, Scholastic, MTV Networks, Wikipedia, Verizon Wireless, Sage Group, Glassfish Open Message Queue, and RightNow Technologies.
Find out what your peers are saying about Faiss vs. MySQL and other solutions. Updated: November 2026.
920,574 professionals have used our research since 2012.