_version_ 1866914553571311616
author Phoenix, Team
:
Ray, Arka
Jawad, Askar Ali Mohamed
Lee, Biondi
Seah, Elijah
Lim, Eva
Teo, Fiona
Toh, Grace
Teo, Guang Xiang
Tan, Jun En
Bong, Jia Hui
Wang, Jiale
Ng, Jonathan
Tan, Justin
Yew, Kai Zhe
Ong, Matthew
Yeo, Shun Yi
Lam, Wen Jett
Tan, Wen Xiu
Zhang, Ze Yu
Ng, Gee Wah
Ang, Chee Wee
AI, Mistral
:
Sadé, Adrien
Kunsch, Guillaume
Loh, Jia Sin
Schuhl, Nicolas
Menneer, Rupert
Jamil, Umar
Maladière, Vincent
Pan, Yimu
author_facet Phoenix, Team
:
Ray, Arka
Jawad, Askar Ali Mohamed
Lee, Biondi
Seah, Elijah
Lim, Eva
Teo, Fiona
Toh, Grace
Teo, Guang Xiang
Tan, Jun En
Bong, Jia Hui
Wang, Jiale
Ng, Jonathan
Tan, Justin
Yew, Kai Zhe
Ong, Matthew
Yeo, Shun Yi
Lam, Wen Jett
Tan, Wen Xiu
Zhang, Ze Yu
Ng, Gee Wah
Ang, Chee Wee
AI, Mistral
:
Sadé, Adrien
Kunsch, Guillaume
Loh, Jia Sin
Schuhl, Nicolas
Menneer, Rupert
Jamil, Umar
Maladière, Vincent
Pan, Yimu
contents We introduce Phoenix-VL 1.5 Medium, a 123B-parameter natively multimodal and multilingual foundation model, adapted to regional languages and the Singapore context. Developed as a sovereign AI asset, it demonstrates that deep domain adaptation can be achieved with minimal degradation to broad-spectrum intelligence and alignment. Continued pretraining was performed on Mistral Medium 3.1 using a localized 1-trillion tokens multimodal corpus, followed by a 250-billion tokens long-context extension phase. Subsequent post-training incorporated a novel human-annotated Singapore multimodal dataset and curated textual corpus on Singapore culture, knowledge, and legislation, totaling 22-billion tokens. An additional 5 billion tokens of model alignment was performed through Online Direct Preference Optimization. Phoenix-VL 1.5 Medium achieves state-of-the-art performance for its size on Singapore multimodal, legal, and government policy benchmarks while remaining globally competitive on general multimodal intelligence, multilingual, and STEM benchmarks. We also introduce a novel evaluation suite encompassing localized knowledge benchmarks and an institutionally aligned model behavior and safety framework. We report the data curation principles, training methodology, and highlight benchmark and inference performance.
format Preprint
id arxiv_https___arxiv_org_abs_2605_10391
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Phoenix-VL 1.5 Medium Technical Report
Phoenix, Team
:
Ray, Arka
Jawad, Askar Ali Mohamed
Lee, Biondi
Seah, Elijah
Lim, Eva
Teo, Fiona
Toh, Grace
Teo, Guang Xiang
Tan, Jun En
Bong, Jia Hui
Wang, Jiale
Ng, Jonathan
Tan, Justin
Yew, Kai Zhe
Ong, Matthew
Yeo, Shun Yi
Lam, Wen Jett
Tan, Wen Xiu
Zhang, Ze Yu
Ng, Gee Wah
Ang, Chee Wee
AI, Mistral
:
Sadé, Adrien
Kunsch, Guillaume
Loh, Jia Sin
Schuhl, Nicolas
Menneer, Rupert
Jamil, Umar
Maladière, Vincent
Pan, Yimu
Computation and Language
Artificial Intelligence
Computer Vision and Pattern Recognition
We introduce Phoenix-VL 1.5 Medium, a 123B-parameter natively multimodal and multilingual foundation model, adapted to regional languages and the Singapore context. Developed as a sovereign AI asset, it demonstrates that deep domain adaptation can be achieved with minimal degradation to broad-spectrum intelligence and alignment. Continued pretraining was performed on Mistral Medium 3.1 using a localized 1-trillion tokens multimodal corpus, followed by a 250-billion tokens long-context extension phase. Subsequent post-training incorporated a novel human-annotated Singapore multimodal dataset and curated textual corpus on Singapore culture, knowledge, and legislation, totaling 22-billion tokens. An additional 5 billion tokens of model alignment was performed through Online Direct Preference Optimization. Phoenix-VL 1.5 Medium achieves state-of-the-art performance for its size on Singapore multimodal, legal, and government policy benchmarks while remaining globally competitive on general multimodal intelligence, multilingual, and STEM benchmarks. We also introduce a novel evaluation suite encompassing localized knowledge benchmarks and an institutionally aligned model behavior and safety framework. We report the data curation principles, training methodology, and highlight benchmark and inference performance.
title Phoenix-VL 1.5 Medium Technical Report
topic Computation and Language
Artificial Intelligence
Computer Vision and Pattern Recognition
url https://arxiv.org/abs/2605.10391