STEP3-VL-10B Technical Report
We present STEP3-VL-10B, a lightweight open-source foundation model designed to redefine the trade-off between compact efficiency and frontier-level multimodal intelligence. STEP3-VL-10B is realized through two strategic shifts: first, a unified, fully unfrozen pre-training strategy on 1.2T multimodal tokens that integrates a language-aligned Perception Encoder with a Qwen3-8B decoder to establish intrinsic vision-language synergy; and second, a scaled post-training pipeline featuring over 1k iterations of reinforcement learning. Crucially, we implement Parallel Coordinated Reasoning (PaCoRe) to scale test-time compute, allocating resources to scalable perceptual reasoning that explores and synthesizes diverse visual hypotheses. Consequently, despite its compact 10B footprint, STEP3-VL-10B rivals or surpasses models 10times-20times larger (e.g., GLM-4.6V-106B, Qwen3-VL-235B) and top-tier proprietary flagships like Gemini 2.5 Pro and Seed-1.5-VL. Delivering best-in-class performance, it records 92.2% on MMBench and 80.11% on MMMU, while excelling in complex reasoning with 94.43% on AIME2025 and 75.95% on MathVision. We release the full model suite to provide the community with a powerful, efficient, and reproducible baseline.
6968bc424dcc6d53da2701df
Ailin Huang
6968bc424dcc6d53da2701e0
Chengyuan Yao
6968bc424dcc6d53da2701e1
Chunrui Han
6968bc424dcc6d53da2701e2
Fanqi Wan
admin_assigned
2026-01-16T15:29:02.442Z
62ecbffd99112e99c5f7fded
https://cdn-avatars.huggingface.co/v1/production/uploads/62ecbffd99112e99c5f7fded/U6iXAJbpm2vaC5qksEPiH.png
Fanqi Wan
Wanfq
user
Wanfq
6968bc424dcc6d53da2701e3
Hangyu Guo
6968bc424dcc6d53da2701e4
Haoran Lv
admin_assigned
2026-01-16T15:29:19.559Z
68c0dd3b8998cbe8217171a5
/avatars/554301bdaa61f190693482f28500f7ae.svg
吕浩然
HaoRanLv
user
HaoRanLv
6968bc424dcc6d53da2701e5
Hongyu Zhou
6968bc424dcc6d53da2701e6
Jia Wang
6968bc424dcc6d53da2701e7
Jian Zhou
6968bc424dcc6d53da2701e8
Jianjian Sun
6968bc424dcc6d53da2701e9
Jingcheng Hu
claimed_verified
2026-01-16T10:32:19.060Z
625026b7d2d191ac43320c5e
https://cdn-avatars.huggingface.co/v1/production/uploads/625026b7d2d191ac43320c5e/2ExzHlZ-Bk8SQMyBjeY6N.jpeg
Jingcheng Hu
reign12
user
reign12
6968bc424dcc6d53da2701ea
Kangheng Lin
admin_assigned
2026-01-16T15:29:41.402Z
658a810665df457a55ffcd04
https://cdn-avatars.huggingface.co/v1/production/uploads/658a810665df457a55ffcd04/6Pe0mNao4mlWLIjYEoWv5.jpeg
Linkangheng
Kangheng
user
Kangheng
6968bc424dcc6d53da2701eb
Liang Zhao
6968bc424dcc6d53da2701ec
Mitt Huang
6968bc424dcc6d53da2701ed
Song Yuan
6968bc424dcc6d53da2701ee
Wenwen Qu
6968bc424dcc6d53da2701ef
Xiangfeng Wang
6968bc424dcc6d53da2701f0
Yanlin Lai
admin_assigned
2026-01-16T15:29:26.009Z
6845364527e777c8bc42e444
/avatars/bbaf2ce1bdc69848debf2a2b507dd14c.svg
yanlin lai
lyn22333
user
lyn22333
6968bc424dcc6d53da2701f1
Yingxiu Zhao
admin_assigned
2026-01-16T15:29:54.082Z
639c0eb734967bcf4565cf29
/avatars/f4788bb89b788b40ead4e1f3314044f7.svg
Yingxiu Zhao
Yingxiu
user
Yingxiu
6968bc424dcc6d53da2701f2
Yinmin Zhang
admin_assigned
2026-01-16T15:29:48.054Z
664ae39ab5e5f95dc6209365
https://cdn-avatars.huggingface.co/v1/production/uploads/664ae39ab5e5f95dc6209365/8Z9ERYhX6URXh4si6jWGm.jpeg
Yinmin Zhang
YinminZhang
user
YinminZhang
6968bc424dcc6d53da2701f3
Yukang Shi
6968bc424dcc6d53da2701f4
Yuyang Chen
6968bc424dcc6d53da2701f5
Zejia Weng
6968bc424dcc6d53da2701f6
Ziyang Meng
claimed_verified
2026-01-19T09:24:15.028Z
653614073f4248157d60ccdc
/avatars/c9298bab1cdc1d0b6ffe4c7c5ef18bd5.svg
mengziyang
zylate
user
zylate
6968bc424dcc6d53da2701f7
Ang Li
6968bc424dcc6d53da2701f8
Aobo Kong
6968bc424dcc6d53da2701f9
Bo Dong
6968bc424dcc6d53da2701fa
Changyi Wan
6968bc424dcc6d53da2701fb
David Wang
6968bc424dcc6d53da2701fc
Di Qi
6968bc424dcc6d53da2701fd
Dingming Li
claimed_verified
2026-04-10T13:34:39.017Z
67543820c3af453d7b3e1d5e
https://cdn-avatars.huggingface.co/v1/production/uploads/67543820c3af453d7b3e1d5e/RbAZ9AQlxpy5E5Is-QN8b.jpeg
Dingming Li
lidingm
user
lidingm
6968bc424dcc6d53da2701fe
En Yu
6968bc424dcc6d53da2701ff
Guopeng Li
6968bc424dcc6d53da270200
Haiquan Yin
6968bc424dcc6d53da270201
Han Zhou
claimed_verified
2026-01-19T09:24:26.554Z
67b026ba34cd745a05b51d21
/avatars/1de3def73315ad9b81a662a10c2d4a36.svg
HAN
Zzzhan11
user
Zzzhan11
6968bc424dcc6d53da270202
Hanshan Zhang
claimed_verified
2026-01-19T09:24:24.417Z
64b7874b9f5987572ca28461
/avatars/d24ee0a6329ff93936aa7829481e2046.svg
hanshanzhang
brain-zhang
user
brain-zhang
6968bc424dcc6d53da270203
Haolong Yan
6968bc424dcc6d53da270204
Hebin Zhou
6968bc424dcc6d53da270205
Hongbo Peng
claimed_verified
2026-01-16T10:32:21.188Z
68106c88b924dd6c328889c2
/avatars/8accf835b711bffa2ea307158950ab33.svg
Hongbo Peng
M1chaelPeng
user
M1chaelPeng
6968bc424dcc6d53da270206
Jiaran Zhang
6968bc424dcc6d53da270207
Jiashu Lv
admin_assigned
2026-01-16T15:30:23.399Z
673e9988fc3c3c898a57949b
https://cdn-avatars.huggingface.co/v1/production/uploads/noauth/gsQlZCq1I2FrqqmMPgxoh.jpeg
Jiashu Lv
Jserw
user
Jserw
6968bc424dcc6d53da270208
Jiayi Fu
6968bc424dcc6d53da270209
Jie Cheng
6968bc424dcc6d53da27020a
Jie Zhou
6968bc424dcc6d53da27020b
Jisheng Yin
6968bc424dcc6d53da27020c
Jingjing Xie
admin_assigned
2026-01-16T15:30:31.565Z
6502f241b1792803da7e8def
https://cdn-avatars.huggingface.co/v1/production/uploads/6502f241b1792803da7e8def/mJ1XCVKivsMLi2Lo1kGKX.png
JingJing Xie
ownerEli
user
ownerEli
6968bc424dcc6d53da27020d
Jingwei Wu
claimed_verified
2026-02-05T10:57:27.668Z
65ab85b968139e3c42c6c50d
/avatars/fe35f055ecc49412b086a9a5513a11a8.svg
Jingwei Wu
jingwwu
user
jingwwu
6968bc424dcc6d53da27020e
Jun Zhang
6968bc424dcc6d53da27020f
Junfeng Liu
6968bc424dcc6d53da270210
Kaijun Tan
6968bc424dcc6d53da270211
Kaiwen Yan
6968bc424dcc6d53da270212
Liangyu Chen
6968bc424dcc6d53da270213
Lina Chen
6968bc424dcc6d53da270214
Mingliang Li
6968bc424dcc6d53da270215
Qian Zhao
6968bc424dcc6d53da270216
Quan Sun
6968bc424dcc6d53da270217
Shaoliang Pang
6968bc424dcc6d53da270218
Shengjie Fan
6968bc424dcc6d53da270219
Shijie Shang
6968bc424dcc6d53da27021a
Siyuan Zhang
admin_assigned
2026-01-16T15:31:04.562Z
682703cde798014f05e8d224
/avatars/167ba232ad427e995aa9629202c670d0.svg
SiyuanZhang
SiyuanZhang
user
SiyuanZhang
6968bc424dcc6d53da27021b
Tianhao You
6968bc424dcc6d53da27021c
Wei Ji
6968bc424dcc6d53da27021d
Wuxun Xie
6968bc424dcc6d53da27021e
Xiaobo Yang
6968bc424dcc6d53da27021f
Xiaojie Hou
6968bc424dcc6d53da270220
Xiaoran Jiao
6968bc424dcc6d53da270221
Xiaoxiao Ren
6968bc424dcc6d53da270222
Xiangwen Kong
6968bc424dcc6d53da270223
Xin Huang
6968bc424dcc6d53da270224
Xin Wu
6968bc424dcc6d53da270225
Xing Chen
6968bc424dcc6d53da270226
Xinran Wang
6968bc424dcc6d53da270227
Xuelin Zhang
6968bc424dcc6d53da270228
Yana Wei
admin_assigned
2026-01-16T15:31:44.883Z
64ae4d62179421d320b67c26
https://cdn-avatars.huggingface.co/v1/production/uploads/64ae4d62179421d320b67c26/nz-tY6hX7mcDzhdtBmG8K.jpeg
Yana Wei
llwswyn
user
llwswyn
6968bc424dcc6d53da270229
Yang Li
6968bc424dcc6d53da27022a
Yanming Xu
6968bc424dcc6d53da27022b
Yeqing Shen
6968bc424dcc6d53da27022c
Yuang Peng
6968bc424dcc6d53da27022d
Yue Peng
6968bc424dcc6d53da27022e
Yu Zhou
6968bc424dcc6d53da27022f
Yusheng Li
6968bc424dcc6d53da270230
Yuxiang Yang
6968bc424dcc6d53da270231
Yuyang Zhang
6968bc424dcc6d53da270232
Zhe Xie
6968bc424dcc6d53da270233
Zhewei Huang
6968bc424dcc6d53da270234
Zhenyi Lu
claimed_verified
2026-02-12T13:58:05.929Z
63607ace9ddc44e710e13f0f
/avatars/b5f331549562aea4a5c8b681fd9da1ff.svg
zy
lu-vae
user
lu-vae
6968bc424dcc6d53da270235
Zhimin Fan
6968bc424dcc6d53da270236
Zihui Cheng
claimed_verified
2026-03-02T09:41:14.288Z
663ede8d8732bcd07634783b
https://cdn-avatars.huggingface.co/v1/production/uploads/663ede8d8732bcd07634783b/QHBu9WJY_oMlB1go6xkUm.jpeg
ZihuiCheng
czh-up
user
czh-up
6968bc424dcc6d53da270237
Daxin Jiang
6968bc424dcc6d53da270238
Qi Han
6968bc424dcc6d53da270239
Xiangyu Zhang
6968bc424dcc6d53da27023a
Yibo Zhu
6968bc424dcc6d53da27023b
Zheng Ge
STEP3-VL-10B Technical Report
We present STEP3-VL-10B, a lightweight open-source foundation model designed to redefine the trade-off between compact efficiency and frontier-level multimodal intelligence. STEP3-VL-10B is realized through two strategic shifts: first, a unified, fully unfrozen pre-training strategy on 1.2T multimodal tokens that integrates a language-aligned Perception Encoder with a Qwen3-8B decoder to establish intrinsic vision-language synergy; and second, a scaled post-training pipeline featuring over 1k iterations of reinforcement learning. Crucially, we implement Parallel Coordinated Reasoning (PaCoRe) to scale test-time compute, allocating resources to scalable perceptual reasoning that explores and synthesizes diverse visual hypotheses. Consequently, despite its compact 10B footprint, STEP3-VL-10B rivals or surpasses models 10times-20times larger (e.g., GLM-4.6V-106B, Qwen3-VL-235B) and top-tier proprietary flagships like Gemini 2.5 Pro and Seed-1.5-VL. Delivering best-in-class performance, it records 92.2% on MMBench and 80.11% on MMMU, while excelling in complex reasoning with 94.43% on AIME2025 and 75.95% on MathVision. We release the full model suite to provide the community with a powerful, efficient, and reproducible baseline.
STEP3-VL-10B achieves superior multimodal performance through unified pre-training with a language-aligned Perception Encoder and Qwen3-8B decoder, combined with scaled post-training and Parallel Coordinated Reasoning for efficient large-scale visual reasoning.
multimodal tokens Perception Encoder Qwen3-8B decoder vision-language synergy reinforcement learning Parallel Coordinated Reasoning test-time compute visual hypotheses MMBench MMMU AIME2025 MathVision