--- title: Kaldi ASR Reviews meta\_title: 'Kaldi ASR Reviews 2026: Details, Pricing, & Features | G2' meta\_description: Filter 21 reviews by the users' company size, role or industry to find out how Kaldi ASR works for a business like yours. aggregate\_rating: rating\_value: 4.1 review\_count: 21 scale: '5' date\_modified: '2026-08-07' parent\_category: name: Deep Learning url: https://www.g2.com/categories/deep-learning --- # Kaldi ASR Reviews & Product Details Kaldi is an automatic speech recognition toolkit that supports linear transforms, MMI, boosted MMI and MCE discriminative training, feature-space discriminative training, and deep neural networks. * * * Seller [Slashdot Media](https://www.g2.com/sellers/slashdot-media-f36ce474-2d3a-435a-b509-52358ccd9999) Discussions [Kaldi ASR Community](https://www.g2.com/products/kaldi-asr/discuss) Show More ## Top-Rated Alternatives [ ![OpenAI Whisper](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "OpenAI Whisper") OpenAI Whisper 4.3/5(49) ](https://www.g2.com/products/openai-whisper/reviews) [ ![Deepgram](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Deepgram") Deepgram 4.6/5(474) ](https://www.g2.com/products/deepgram/reviews) [ ![Otter.ai](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Otter.ai") Otter.ai 4.4/5(502) ](https://www.g2.com/products/otter-ai/reviews) [ View All Alternatives ](https://www.g2.com/products/kaldi-asr/competitors/alternatives) ## User Insights Average based on 21 real user reviews. [Log in to unlock pricing and user insights](/login) ![Nagendra K.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Nagendra K.") NK Nagendra K. Senior Engineer - Data Scientist Enterprise (\> 1000 emp.) 6/22/2021 "Speaker Verification using Kaldi Toolkit" 4.5/5 What do you like best about Kaldi ASR? It is open-sourced and very well-maintained toolkit by the core group of Johns Hopkins University's speech recognition laboratory. We can extract various state-of-art features such as i-vector, x-vector which can be used for various speech-related tasks. For speech-related tasks, we can achieve the state-of-art result. Review collected by and hosted on G2.com. What do you dislike about Kaldi ASR? Installation of Kaldi with GPU support is a nightmare for me. Review collected by and hosted on G2.com. Recommendations to others considering Kaldi ASR: Before installing, first, read the Kaldi group discussion related to installation steps. Review collected by and hosted on G2.com. What problems is Kaldi ASR solving and how is that benefiting you? Mostly I have used Kaldi for the Speech-based Speaker Verification task. Training the Total-Variability matrix and Deep Learning model is much faster than the Matlab-based training. Review collected by and hosted on G2.com. Show More 6/13/2024 Validated ReviewerIncentivizedSource: G2 invite ![Verified User in Information Technology and Services](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Information Technology and Services") UI Verified User in Information Technology and Services Small-Business (50 or fewer emp.) 8/13/2021 "Current version of Kaldi is not intuitive or user friendly" 1/5 What do you like best about Kaldi ASR? The upsides of Kaldi is that once you know it very deeply after a lot of experience, the possibilities become quite endless for customising acoustic models. The user community for Kaldi is quite vast, interactive, and odds are that someone has had the same problem as you if you just know what to look for. There are many useful tools in the utils/ folder, even though they all need thorough customisation for appropriate use for the model building, as the process is inherently data-driven. Kaldi does feel like a massive puzzle, and piecing it together is quite rewarding in a strange, masochistic way. It's great that since it is community-based, there are many pre-existing recipes that are easily customisable for various use cases and that you can contribute with your own recipe. My own holy grail that I always go back to is the Eleanor Chodroff tutorial for building Kaldi acoustic models, since it describes the particular data structure required for the process. Review collected by and hosted on G2.com. What do you dislike about Kaldi ASR? Well. There are many issues that i must adress pertaining to Kaldi. This is just some of those things that everyone knows and has accepted, but bottom line is that currently Kaldi is not user friendly or intuitive. While there are a lot of recipes, they are all border-line useless because they all need to be thoroughly customised as the point of creating a custom ASR model is that it is entirely data-driven. There are no explanations as to what the many utilities are or why they must occur in which order. The only way to learn how to use Kaldi is through thorough trial and error. If you try to ask Dan Povey questions on the forum, you will get a passive-agressive response thinly veiled as advice telling you to switch careers and stop doing speech recognition. The entire framework is so un-intuitive that it maketh no sense. Literally any user interface or some more comprehensive and straight forward instruction would be great. What also annoys me is that there are so many fantastic language representation systems with which one can make a great LM, but since Kaldi only works with ARPA format, it disallows any great progress in the quality of ASR in regards to LMs. Another thing is that if you make one mistake, you pretty much have to start all over again. Especially since Kaldi is so data-driven, it is particularly difficult to automate AM building processes which is hindering to company growth if Kaldi is the main tool that is used there. Review collected by and hosted on G2.com. Recommendations to others considering Kaldi ASR: Patience, trial and error, and lots of reading is key. It can be a powerful tool and create great models, but starting out can feel quite slow. Review collected by and hosted on G2.com. What problems is Kaldi ASR solving and how is that benefiting you? I use Kaldi to build custom ASR models for clients, the benefits were that it was pretty much the only sensible option for ASR building at the time. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ![Nadeem P.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Nadeem P.") NP Nadeem P. Machine Learning Engineer Mid-Market (51-1000 emp.) 6/26/2021 "Kaldi is user-friendly tool, which gives us a freedom to explore the things like speech recognition." 5/5 What do you like best about Kaldi ASR? Language Model creation and FST creation. Review collected by and hosted on G2.com. What do you dislike about Kaldi ASR? Lexicon generation requires linguists help if open source lexicon data is not available. Review collected by and hosted on G2.com. Recommendations to others considering Kaldi ASR: If someone want to understand the practical experience of ASR working. Review collected by and hosted on G2.com. What problems is Kaldi ASR solving and how is that benefiting you? Domain specific ASR. Review collected by and hosted on G2.com. Show More 12/26/2021 Validated ReviewerIncentivizedSource: G2 invite ![Ayush J.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Ayush J.") AJ Ayush J. Software developer Small-Business (50 or fewer emp.) 6/20/2021 "I have a great experience using kaldi toolkit ." 5/5 What do you like best about Kaldi ASR? Speed, accuracy. It makes the job simpler. Speed was great. All the documentation was there. The instruction was really helpful. There is no other tool like kaldi to implement the speech-to-text conversion. Review collected by and hosted on G2.com. What do you dislike about Kaldi ASR? Operating system compatibility. I faced a problem with windows OS. Kaldi was faster in Linux but it was difficult to implement in windows. Review collected by and hosted on G2.com. Recommendations to others considering Kaldi ASR: Highly recommend kaldi for speech text conversion. Easy to use and implement. Instruction for implementation was well documented and each step was very clear. Review collected by and hosted on G2.com. What problems is Kaldi ASR solving and how is that benefiting you? Speech to text conversion. understanding the speech data using kaldi was awesome. Review collected by and hosted on G2.com. Show More 6/23/2021 Validated ReviewerIncentivizedSource: G2 invite ![Verified User in Primary/Secondary Education](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Primary/Secondary Education") UP Verified User in Primary/Secondary Education Small-Business (50 or fewer emp.) 6/28/2021 "Kaldi - a tool for customized and time synchronized ASR" 4/5 What do you like best about Kaldi ASR? It has fst for LM which makes it very flexible and customizable solution to target application domain. It also renders the phoneme time stamps in ctm output, which makes it an ideal solution for time synchronization and confidence score calibration Review collected by and hosted on G2.com. What do you dislike about Kaldi ASR? It needs a lots and lots of memory resources to load the bulky acoustic models and the LM graphs. Review collected by and hosted on G2.com. What problems is Kaldi ASR solving and how is that benefiting you? Fluency and Pronunciation scoring for kids edutech. We could precisely score the confidence scores for spoken sentence based from deterministic lattice indexing and precise time synchronization. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite ![Verified User in Information Technology and Services](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Information Technology and Services") UI Verified User in Information Technology and Services Small-Business (50 or fewer emp.) 6/23/2021 "kaldi is very well thought and written tool" 5/5 What do you like best about Kaldi ASR? recipes, stability, and user friendly, Very smart and intelligent people worked for it. Kaldi is an excellent toolkit that continually lead the research in ASR technologies Review collected by and hosted on G2.com. What do you dislike about Kaldi ASR? The base code is in c++. In today's time, if it is in python, it would be much more easily accessible to broader people. Review collected by and hosted on G2.com. What problems is Kaldi ASR solving and how is that benefiting you? I have trained speech recognition systems with Kaldi. Right now, I use the feature extraction pipeline for training end-to-end ASR systems. Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite ![Verified User in Hospital & Health Care](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Hospital & Health Care") IH Verified User in Hospital & Health Care Small-Business (50 or fewer emp.) 7/3/2021 "Kaldi is a helpful tool for speech recognition." 4/5 What do you like best about Kaldi ASR? It is very convenient and useful to convert audio files to structured files. It can be used in many coding languages, including Python and C++. Its automatical process helps save time. Review collected by and hosted on G2.com. What do you dislike about Kaldi ASR? The handbook of Kaldi is not clear enough and sometimes you need to google and check to totally understand the meaning of some parameters. Review collected by and hosted on G2.com. What problems is Kaldi ASR solving and how is that benefiting you? I was working on the development of a real-time speech recognition AI for medical and healthcare conversations. Kaldi helps me convert audio files to structured file and then I can apply speech recognition models. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ![Verified User in Higher Education](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Higher Education") UH Verified User in Higher Education Mid-Market (51-1000 emp.) 6/28/2021 "Very useful but limited for use cases" 4/5 What do you like best about Kaldi ASR? Kaldi tool is very fast and easy to handle. Review collected by and hosted on G2.com. What do you dislike about Kaldi ASR? At the initial point, it is tough to learn. If you are learning it alone then it looks tough to use it. Review collected by and hosted on G2.com. Recommendations to others considering Kaldi ASR: I would like to recommend it to all those works in the same domain. Review collected by and hosted on G2.com. What problems is Kaldi ASR solving and how is that benefiting you? Speaker Recognition using Neural network. This has very nice implementation of NN. Review collected by and hosted on G2.com. Show More 8/19/2021 Validated ReviewerIncentivizedSource: G2 invite ![Verified User in Computer Software](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Computer Software") IC Verified User in Computer Software Small-Business (50 or fewer emp.) 8/18/2021 "Kaldi is a very good software for both beginners and advanced speech research." 5/5 What do you like best about Kaldi ASR? The features. Like multiple algorithms for feature extraction. Support for many neural architectures. Review collected by and hosted on G2.com. What do you dislike about Kaldi ASR? Unless we are masters in C++, its quite difficult to hack into the source code. Review collected by and hosted on G2.com. What problems is Kaldi ASR solving and how is that benefiting you? Speech recognition, speaker identification, and language identification. The benefits are it has support for many previously published papers, and it's very easy to reproduce the results. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ![Verified User in Computer Software](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Computer Software") UC Verified User in Computer Software Small-Business (50 or fewer emp.) 7/3/2021 "useful for all the speech researchers" 4.5/5 What do you like best about Kaldi ASR? easy sample script access for building speech based models. Review collected by and hosted on G2.com. What do you dislike about Kaldi ASR? It cannot handle end-to-end architecture models. Provision should be provided for those. Review collected by and hosted on G2.com. Recommendations to others considering Kaldi ASR: A must for beginners in speech Review collected by and hosted on G2.com. What problems is Kaldi ASR solving and how is that benefiting you? primary Industry use cases can be solved using Kaldi. Simple to implement Review collected by and hosted on G2.com. Show More Current UserValidated ReviewerIncentivizedSource: G2 invite ##### Pricing Pricing details for this product isn’t currently available. Visit the vendor’s website to learn more. [ View More Pricing Information ](https://www.g2.com/products/kaldi-asr/pricing) Kaldi ASR Comparisons ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/small_square/small_square_1c033b4a225e3762444723e37922d694/openai-whisper.jpeg "Product Avatar Image") OpenAI Whisper 4.3/5(49) [ Compare Now ](https://www.g2.com/compare/kaldi-asr-vs-openai-whisper) ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/small_square/small_square_b05037f5512896ae149e0d2e70c52d76/htk-hidden-markov-model-toolkit.gif "Product Avatar Image") HTK (Hidden Markov Model... 3.7/5(16) [ Compare Now ](https://www.g2.com/compare/htk-hidden-markov-model-toolkit-vs-kaldi-asr) ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/small_square/small_square_aeae116c52945fdecd7ed16d621cb315/google-cloud-speech-to-text.png "Product Avatar Image") Google Cloud Speech-to-Text 4.5/5(312) [ Compare Now ](https://www.g2.com/compare/google-cloud-speech-to-text-vs-kaldi-asr) ## Work at Slashdot Media? 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