OpenThaiGPT 1.6 and R1: Thai-Centric Open Source and Reasoning Large Language Models
On the map: LLM reasoning → Reasoning benchmarks and evaluation
Abstract (arXiv)
We present OpenThaiGPT 1.6 and R1 (OTG-1.6 and OTG-R1), Thai-centric Large Language Models (LLMs) developed through distinct methodologies to enhance generalization and reasoning capabilities. OTG-1.6 employs Task Arithmetic model merging for broad generalization, while OTG-R1 integrates multi-stage training with the Less-Is-More Reasoning Hypothesis (LIMO) for advanced reasoning. Benchmark evaluations demonstrate superior performance across Thai language tasks, achieving competitive results against larger-scale open-source Thai LLMs. This paper details the proposed models, training processes, benchmarks, and results, highlighting improvements over previous models and establishing new performance standards for Thai-centric LLMs.
Key facts. Cited by 2 papers in the map (data through 14 Oct 2026). Placed in Reasoning benchmarks and evaluation, one of 17 directions in LLM reasoning. Builds on 13 of its 15 references that are in the map. First posted on arXiv 2 Apr 2025.
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13 of 15 references.
Closest ancestors · 1
Same direction, newest first
- 2025Towards Large Reasoning Models: A Survey of Reinforced Reasoning with Large Language Models16 Jan
Other references · 12
- 2025DeepSeek-R1: Incentivizing Reasoning Capability in LLMs via Reinforcement Learningcited by 6,330
- 2025Gemma 3 Technical Reportcited by 1,824
- 2024OpenAI o1 System Cardcited by 1,244
- 2022Editing Models with Task Arithmeticcited by 1,120
- 2025LIMO: Less is More for Reasoningcited by 498
- 2022DeepSpeed Inference: Enabling Efficient Inference of Transformer Models at Unprecedented Scalecited by 407
- 2024SWIFT:A Scalable lightWeight Infrastructure for Fine-Tuningcited by 355
- 2025Large Language Model Agent: A Survey on Methodology, Applications and Challengescited by 205
- 2025Competitive Programming with Large Reasoning Modelscited by 119
- 2024Large Language Models Meet NLP: A Surveycited by 103
- 2023Typhoon: Thai Large Language Modelscited by 30
- 2024Typhoon 2: A Family of Open Text and Multimodal Thai Large Language Modelscited by 12
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Citing papers per year: 2025: 1; 2026: 1.
2 papers.
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Close in wording, no citation either way
- 2025Adapting Language-Specific LLMs to a Reasoning Model in One Day via Model Merging -- An Open Recipe
- 2025Typhoon T1: An Open Thai Reasoning Model
- 2024OpenThaiGPT 1.5: A Thai-Centric Open Source Large Language Model
- 2024OpenR: An Open Source Framework for Advanced Reasoning with Large Language Models
- 2023Chain-of-Thought Hub: A Continuous Effort to Measure Large Language Models' Reasoning Performance
- 2024Thai Winograd Schemas: A Benchmark for Thai Commonsense Reasoning
- 2024A Comparative Study on Reasoning Patterns of OpenAI's o1 Model
- 2025Reasoning Beyond Limits: Advances and Open Problems for LLMs