PyThaiNLP: Thai Natural Language Processing in Python
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Abstract (arXiv)
We present PyThaiNLP, a free and open-source natural language processing (NLP) library for Thai language implemented in Python. It provides a wide range of software, models, and datasets for Thai language. We first provide a brief historical context of tools for Thai language prior to the development of PyThaiNLP. We then outline the functionalities it provided as well as datasets and pre-trained language models. We later summarize its development milestones and discuss our experience during its development. We conclude by demonstrating how industrial and research communities utilize PyThaiNLP in their work. The library is freely available at https://github.com/pythainlp/pythainlp.
Key facts. Cited by 27 papers in the map (data through 7 Oct 2026). Builds on 12 of its 64 references that are in the map. First posted on arXiv 7 Dec 2023.
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12 of 64 references.
References · 12
- 2019Unsupervised Cross-lingual Representation Learning at Scalecited by 3,907
- 2019Common Voice: A Massively-Multilingual Speech Corpuscited by 1,358
- 2019Cross-lingual Language Model Pretrainingcited by 1,088
- 2021Few-shot Learning with Multilingual Language Modelscited by 278
- 2020fastai: A Layered API for Deep Learningcited by 183
- 2020Top2Vec: Distributed Representations of Topicscited by 124
- 2014POLYGLOT-NER: Massive Multilingual Named Entity Recognitioncited by 32
- 2021WangchanBERTa: Pretraining transformer-based Thai Language Modelscited by 25
- 201882 Treebanks, 34 Models: Universal Dependency Parsing with Multi-Treebank Modelscited by 11
- 2020scb-mt-en-th-2020: A Large English-Thai Parallel Corpuscited by 10
- 2023Multilingual End to End Entity Linkingcited by 8
- 2020The Annotation Guideline of LST20 Corpuscited by 4
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Citing papers per year: 2024: 11; 2025: 7; 2026: 9.
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- 2024SEACrowd: A Multilingual Multimodal Data Hub and Benchmark Suite for Southeast Asian Languagescited by 41
- 2025Confounding Factors in Relating Model Performance to Morphologycited by 14
- 2024Language Complexity and Speech Recognition Accuracy: Orthographic Complexity Hurts, Phonological Complexity Doesn'tcited by 4
- 2025Language Surgery in Multilingual Large Language Modelscited by 4
- 2026X-Voice: Enabling Everyone to Speak 30 Languages via Zero-Shot Cross-Lingual Voice Cloningcited by 4
- 2026Montreal Forced Aligner and the state of speech-to-text alignment in 2026cited by 3
- 2024MrRank: Improving Question Answering Retrieval System through Multi-Result Ranking Modelcited by 2
- 2024Representing the Under-Represented: Cultural and Core Capability Benchmarks for Developing Thai Large Language Modelscited by 2
- 2024On Creating an English-Thai Code-switched Machine Translation in Medical Domaincited by 2
- 2025Mangosteen: An Open Thai Corpus for Language Model Pretrainingcited by 2
- 2025SEA-BED: How Do Embedding Models Represent Southeast Asian Languages?cited by 2
- 2024AyutthayaAlpha: A Thai-Latin Script Transliteration Transformercited by 1
15 more
- 2025LOTUSDIS: A Thai far-field meeting corpus for robust conversational ASRcited by 1
- 2025Developing an Open Conversational Speech Corpus for the Isan Languagecited by 1
- 2026Typhoon OCR: Open Vision-Language Model For Thai Document Extractioncited by 1
- 2026TurkicNLP: An NLP Toolkit for Turkic Languagescited by 1
- 2024WangchanLion and WangchanX MRC Evalcited by 0
- 2024Thai Universal Dependency Treebankcited by 0
- 2024ThaiCoref: Thai Coreference Resolution Datasetcited by 0
- 2024Xmodel-1.5: An 1B-scale Multilingual LLMcited by 0
- 2024Headline-Guided Extractive Summarization for Thai News Articlescited by 0
- 2025Empowering Global Voices: A Data-Efficient, Phoneme-Tone Adaptive Approach to High-Fidelity Speech Synthesiscited by 0
- 2026OasisSimp: An Open-source Asian-English Sentence Simplification Datasetcited by 0
- 2026Bridging the Stability-Expressivity Gap: Synthetic Data Scaling and Preference Alignment for Low-Resource Spoken Language Modelscited by 0
- 2026FastThaiG2P: Lightning-fast Thai Grapheme-to-phoneme Conversion for Voice Agent Pipelinescited by 0
- 2026Building and Evaluating Fixed-Voice Thai TTS from Synthetic Speechcited by 0
- 2026ThaiTrees: Thai Syntactic Dependency Trees Across Domainscited by 0
- 2026ThaiTrees: Thai Syntactic Dependency Trees Across Domains23 Sep 2026
- 2026Building and Evaluating Fixed-Voice Thai TTS from Synthetic Speech3 Sep 2026
- 2026FastThaiG2P: Lightning-fast Thai Grapheme-to-phoneme Conversion for Voice Agent Pipelines13 Aug 2026
- 2026Montreal Forced Aligner and the state of speech-to-text alignment in 202616 Jun 2026
- 2026X-Voice: Enabling Everyone to Speak 30 Languages via Zero-Shot Cross-Lingual Voice Cloning7 May 2026
- 2026Bridging the Stability-Expressivity Gap: Synthetic Data Scaling and Preference Alignment for Low-Resource Spoken Language Models10 Apr 2026
- 2026OasisSimp: An Open-source Asian-English Sentence Simplification Dataset14 Mar 2026
- 2026TurkicNLP: An NLP Toolkit for Turkic Languages22 Feb 2026
- 2026Typhoon OCR: Open Vision-Language Model For Thai Document Extraction21 Jan 2026
- 2025Developing an Open Conversational Speech Corpus for the Isan Language26 Nov 2025
- 2025Confounding Factors in Relating Model Performance to Morphology3 Nov 2025
- 2025LOTUSDIS: A Thai far-field meeting corpus for robust conversational ASR23 Sep 2025
15 more
- 2025SEA-BED: How Do Embedding Models Represent Southeast Asian Languages?17 Aug 2025
- 2025Mangosteen: An Open Thai Corpus for Language Model Pretraining19 Jul 2025
- 2025Language Surgery in Multilingual Large Language Models14 Jun 2025
- 2025Empowering Global Voices: A Data-Efficient, Phoneme-Tone Adaptive Approach to High-Fidelity Speech Synthesis10 Apr 2025
- 2024AyutthayaAlpha: A Thai-Latin Script Transliteration Transformer5 Dec 2024
- 2024Headline-Guided Extractive Summarization for Thai News Articles2 Dec 2024
- 2024Xmodel-1.5: An 1B-scale Multilingual LLM15 Nov 2024
- 2024On Creating an English-Thai Code-switched Machine Translation in Medical Domain21 Oct 2024
- 2024Representing the Under-Represented: Cultural and Core Capability Benchmarks for Developing Thai Large Language Models7 Oct 2024
- 2024SEACrowd: A Multilingual Multimodal Data Hub and Benchmark Suite for Southeast Asian Languages14 Jun 2024
- 2024Language Complexity and Speech Recognition Accuracy: Orthographic Complexity Hurts, Phonological Complexity Doesn't13 Jun 2024
- 2024ThaiCoref: Thai Coreference Resolution Dataset10 Jun 2024
- 2024MrRank: Improving Question Answering Retrieval System through Multi-Result Ranking Model9 Jun 2024
- 2024Thai Universal Dependency Treebank13 May 2024
- 2024WangchanLion and WangchanX MRC Eval24 Mar 2024
- 2024SEACrowd: A Multilingual Multimodal Data Hub and Benchmark Suite for Southeast Asian Languagescited by 41
- 2025Confounding Factors in Relating Model Performance to Morphologycited by 14
- 2024Language Complexity and Speech Recognition Accuracy: Orthographic Complexity Hurts, Phonological Complexity Doesn'tcited by 4
- 2025Language Surgery in Multilingual Large Language Modelscited by 4
- 2026X-Voice: Enabling Everyone to Speak 30 Languages via Zero-Shot Cross-Lingual Voice Cloningcited by 4
- 2026Montreal Forced Aligner and the state of speech-to-text alignment in 2026cited by 3
- 2024MrRank: Improving Question Answering Retrieval System through Multi-Result Ranking Modelcited by 2
- 2024Representing the Under-Represented: Cultural and Core Capability Benchmarks for Developing Thai Large Language Modelscited by 2
- 2024On Creating an English-Thai Code-switched Machine Translation in Medical Domaincited by 2
- 2025Mangosteen: An Open Thai Corpus for Language Model Pretrainingcited by 2
- 2025SEA-BED: How Do Embedding Models Represent Southeast Asian Languages?cited by 2
- 2024AyutthayaAlpha: A Thai-Latin Script Transliteration Transformercited by 1
12 most cited of 25 All 25 (JSON)
- 2026ThaiTrees: Thai Syntactic Dependency Trees Across Domains23 Sep 2026
- 2026Building and Evaluating Fixed-Voice Thai TTS from Synthetic Speech3 Sep 2026
- 2026FastThaiG2P: Lightning-fast Thai Grapheme-to-phoneme Conversion for Voice Agent Pipelines13 Aug 2026
- 2026Montreal Forced Aligner and the state of speech-to-text alignment in 202616 Jun 2026
- 2026X-Voice: Enabling Everyone to Speak 30 Languages via Zero-Shot Cross-Lingual Voice Cloning7 May 2026
- 2026OasisSimp: An Open-source Asian-English Sentence Simplification Dataset14 Mar 2026
- 2026TurkicNLP: An NLP Toolkit for Turkic Languages22 Feb 2026
- 2025Developing an Open Conversational Speech Corpus for the Isan Language26 Nov 2025
- 2025Confounding Factors in Relating Model Performance to Morphology3 Nov 2025
- 2025LOTUSDIS: A Thai far-field meeting corpus for robust conversational ASR23 Sep 2025
- 2025SEA-BED: How Do Embedding Models Represent Southeast Asian Languages?17 Aug 2025
- 2025Mangosteen: An Open Thai Corpus for Language Model Pretraining19 Jul 2025
12 newest of 25 All 25 (JSON)