Seed1.5-VL Technical Report
We present Seed1.5-VL, a vision-language foundation model designed to advance
general-purpose multimodal understanding and reasoning. Seed1.5-VL is composed
with a 532M-parameter vision encoder and a Mixture-of-Experts (MoE) LLM of 20B
active parameters. Despite its relatively compact architecture, it delivers
strong performance across a wide spectrum of public VLM benchmarks and internal
evaluation suites, achieving the state-of-the-art performance on 38 out of 60
public benchmarks. Moreover, in agent-centric tasks such as GUI control and
gameplay, Seed1.5-VL outperforms leading multimodal systems, including OpenAI
CUA and Claude 3.7. Beyond visual and video understanding, it also demonstrates
strong reasoning abilities, making it particularly effective for multimodal
reasoning challenges such as visual puzzles. We believe these capabilities will
empower broader applications across diverse tasks. In this report, we mainly
provide a comprehensive review of our experiences in building Seed1.5-VL across
model design, data construction, and training at various stages, hoping that
this report can inspire further research. Seed1.5-VL is now accessible at
https://www.volcengine.com/ (Volcano Engine Model ID:
doubao-1-5-thinking-vision-pro-250428)
6822ab54a79983c00c8164eb
Dong Guo
6822ab54a79983c00c8164ec
Faming Wu
6822ab54a79983c00c8164ed
Feida Zhu
6822ab54a79983c00c8164ee
Fuxing Leng
6822ab54a79983c00c8164ef
Guang Shi
admin_assigned
2025-05-13T08:17:52.619Z
63561bfdbcf42eac0b8f13cf
/avatars/6c126e2681b930e0bad3255358fc6e48.svg
Guang Shi
user
anyuzx
6822ab54a79983c00c8164f0
Haobin Chen
admin_assigned
2025-05-13T08:17:44.245Z
642a8cbfa096201096ea8fca
/avatars/232b5c38034d777d63be1157e37866b6.svg
haobin chen
user
chb1997
6822ab54a79983c00c8164f1
Haoqi Fan
6822ab54a79983c00c8164f2
Jian Wang
6822ab54a79983c00c8164f3
Jianyu Jiang
6822ab54a79983c00c8164f4
Jiawei Wang
admin_assigned
2025-05-13T08:18:32.411Z
6788122301d5ba1d3eff23ba
/avatars/203dc8e1d542be55ea16eafcd7f396ff.svg
Jiawei Wang
user
0nejiawei
6822ab54a79983c00c8164f5
Jingji Chen
6822ab54a79983c00c8164f6
Jingjia Huang
6822ab54a79983c00c8164f7
Kang Lei
6822ab54a79983c00c8164f8
Liping Yuan
admin_assigned
2025-05-13T08:18:54.175Z
6638cd255b81e56d337a4a98
/avatars/b00805982755e4838b5ce0b23e3357c2.svg
Liping Yuan
user
yuanlp
6822ab54a79983c00c8164f9
Lishu Luo
6822ab54a79983c00c8164fa
Pengfei Liu
6822ab54a79983c00c8164fb
Qinghao Ye
claimed_verified
2025-05-22T07:18:27.280Z
64530fc01a57e1179c1fe4c0
https://cdn-avatars.huggingface.co/v1/production/uploads/noauth/0lncTpIHXn6suB0p-oSma.jpeg
QinghaoYe
user
MAGAer13
6822ab54a79983c00c8164fc
Rui Qian
6822ab54a79983c00c8164fd
Shen Yan
6822ab54a79983c00c8164fe
Shixiong Zhao
admin_assigned
2025-05-13T08:19:22.238Z
61e5fb1377496de0a6d95c74
/avatars/d9864dc9033e2a6f6563a645cf9f455f.svg
Shixiong Zhao
user
kuma-zhao
6822ab54a79983c00c8164ff
Shuai Peng
6822ab54a79983c00c816500
Shuangye Li
6822ab54a79983c00c816501
Sihang Yuan
6822ab54a79983c00c816502
Sijin Wu
6822ab54a79983c00c816503
Tianheng Cheng
claimed_verified
2025-05-13T09:54:28.393Z
646b3db131968a60a01e4cf5
https://cdn-avatars.huggingface.co/v1/production/uploads/646b3db131968a60a01e4cf5/DhfdqUYQaD1Qa8Svw996J.jpeg
Tianheng Cheng
user
wondervictor
6822ab54a79983c00c816504
Weiwei Liu
6822ab54a79983c00c816505
Wenqian Wang
6822ab54a79983c00c816506
Xianhan Zeng
claimed_verified
2025-05-13T08:12:07.125Z
666d10506ec1340a7421a92d
/avatars/5bff16fca817b35760e0c26d8d7c9424.svg
Xianhan Zeng
user
RitzzZz23
6822ab54a79983c00c816507
Xiao Liu
6822ab54a79983c00c816508
Xiaobo Qin
6822ab54a79983c00c816509
Xiaohan Ding
6822ab54a79983c00c81650a
Xiaojun Xiao
6822ab54a79983c00c81650b
Xiaoying Zhang
6822ab54a79983c00c81650c
Xuanwei Zhang
6822ab54a79983c00c81650d
Xuehan Xiong
6822ab54a79983c00c81650e
Yanghua Peng
6822ab54a79983c00c81650f
Yangrui Chen
6822ab54a79983c00c816510
Yanwei Li
6822ab54a79983c00c816511
Yanxu Hu
6822ab54a79983c00c816512
Yi Lin
6822ab54a79983c00c816513
Yiyuan Hu
6822ab54a79983c00c816514
Yiyuan Zhang
claimed_verified
2025-05-13T08:12:09.217Z
63176933b58b0184630d2c74
https://cdn-avatars.huggingface.co/v1/production/uploads/63176933b58b0184630d2c74/53b5EASwW76zeyyqeJA3O.jpeg
Yiyuan Zhang
user
Yiyuan
6822ab54a79983c00c816515
Youbin Wu
6822ab54a79983c00c816516
Yu Li
6822ab54a79983c00c816517
Yudong Liu
6822ab54a79983c00c816518
Yue Ling
6822ab54a79983c00c816519
Yujia Qin
6822ab54a79983c00c81651a
Zanbo Wang
6822ab54a79983c00c81651b
Zhiwu He
admin_assigned
2025-05-13T08:22:32.103Z
65bf84e772615eb159a604cc
/avatars/c0ff550281e6894a762ac57d362ffdde.svg
hezhiwu
user
hezhiwu
6822ab54a79983c00c81651c
Aoxue Zhang
6822ab54a79983c00c81651d
Bairen Yi
claimed_verified
2025-05-14T07:36:04.807Z
6369d92f64aad59d4d44d362
/avatars/73956400cfbfd53116aefc17b3c9f0fd.svg
Yi
user
Bairen
6822ab54a79983c00c81651e
Bencheng Liao
6822ab54a79983c00c81651f
Can Huang
6822ab54a79983c00c816520
Can Zhang
6822ab54a79983c00c816521
Chaorui Deng
6822ab54a79983c00c816522
Chaoyi Deng
6822ab54a79983c00c816523
Cheng Lin
6822ab54a79983c00c816524
Cheng Yuan
6822ab54a79983c00c816525
Chenggang Li
6822ab54a79983c00c816526
Chenhui Gou
claimed_verified
2025-05-21T09:04:42.162Z
652e9c5774d1b0d7ff73d091
/avatars/a6d2098b3dde4a8b7488a193f0ecb776.svg
Chenhui Gou
user
gouc
6822ab54a79983c00c816527
Chenwei Lou
6822ab54a79983c00c816528
Chengzhi Wei
6822ab54a79983c00c816529
Chundian Liu
6822ab54a79983c00c81652a
Chunyuan Li
6822ab54a79983c00c81652b
Deyao Zhu
6822ab54a79983c00c81652c
Donghong Zhong
6822ab54a79983c00c81652d
Feng Li
6822ab54a79983c00c81652e
Feng Zhang
6822ab54a79983c00c81652f
Gang Wu
6822ab54a79983c00c816530
Guodong Li
6822ab54a79983c00c816531
Guohong Xiao
6822ab54a79983c00c816532
Haibin Lin
6822ab54a79983c00c816533
Haihua Yang
6822ab54a79983c00c816534
Haoming Wang
claimed_verified
2025-09-03T09:31:36.819Z
678a19ba39c63f336d24cc27
/avatars/5bec449236ac7d4a0936ef0dd4046761.svg
Haoming Wang
user
MingComplex
6822ab54a79983c00c816535
Heng Ji
6822ab54a79983c00c816536
Hongxiang Hao
6822ab54a79983c00c816537
Hui Shen
6822ab54a79983c00c816538
Huixia Li
claimed_verified
2025-05-26T08:23:50.968Z
6368b457e943416fc80619fb
https://cdn-avatars.huggingface.co/v1/production/uploads/6368b457e943416fc80619fb/RjAJKMwl6aIFKAZs1vgvK.jpeg
HXLee
user
HXLee
6822ab54a79983c00c816539
Jiahao Li
6822ab54a79983c00c81653a
Jialong Wu
claimed_verified
2025-05-22T07:18:24.724Z
643b866bff50448bcfc7d1d1
https://cdn-avatars.huggingface.co/v1/production/uploads/noauth/q12v-BatVKimoi8q-coi-.jpeg
Jialong Wu
user
manchery
6822ab54a79983c00c81653b
Jianhua Zhu
6822ab54a79983c00c81653c
Jianpeng Jiao
6822ab54a79983c00c81653d
Jiashi Feng
6822ab54a79983c00c81653e
Jiaze Chen
6822ab54a79983c00c81653f
Jianhui Duan
6822ab54a79983c00c816540
Jihao Liu
6822ab54a79983c00c816541
Jin Zeng
6822ab54a79983c00c816542
Jingqun Tang
6822ab54a79983c00c816543
Jingyu Sun
6822ab54a79983c00c816544
Joya Chen
claimed_verified
2025-05-13T08:12:04.988Z
642435a1a3adbc7142c3b0a6
https://cdn-avatars.huggingface.co/v1/production/uploads/642435a1a3adbc7142c3b0a6/wgLT_w9jNWRU3O0jU0646.jpeg
Joya Chen
user
chenjoya
6822ab54a79983c00c816545
Jun Long
6822ab54a79983c00c816546
Junda Feng
6822ab54a79983c00c816547
Junfeng Zhan
6822ab54a79983c00c816548
Junjie Fang
6822ab54a79983c00c816549
Junting Lu
6822ab54a79983c00c81654a
Kai Hua
6822ab54a79983c00c81654b
Kai Liu
6822ab54a79983c00c81654c
Kai Shen
6822ab54a79983c00c81654d
Kaiyuan Zhang
6822ab54a79983c00c81654e
Ke Shen
claimed_verified
2025-05-26T08:23:53.193Z
645604eebabbbbd3486dc615
/avatars/17a5ca8274e2bfc8f183a4af9878a930.svg
shenke
user
shenke18
6822ab54a79983c00c81654f
Ke Wang
6822ab54a79983c00c816550
Keyu Pan
6822ab54a79983c00c816551
Kun Zhang
6822ab54a79983c00c816552
Kunchang Li
claimed_verified
2025-05-13T10:27:23.151Z
61fb81006374891646732f37
https://cdn-avatars.huggingface.co/v1/production/uploads/1643872995181-61fb81006374891646732f37.jpeg
Kunchang Li
user
Andy1621
6822ab54a79983c00c816553
Lanxin Li
6822ab54a79983c00c816554
Lei Li
6822ab54a79983c00c816555
Lei Shi
6822ab54a79983c00c816556
Li Han
6822ab54a79983c00c816557
Liang Xiang
6822ab54a79983c00c816558
Liangqiang Chen
6822ab54a79983c00c816559
Lin Chen
claimed_verified
2025-05-13T08:12:12.502Z
64b02ec0e5000ae8a572ced5
https://cdn-avatars.huggingface.co/v1/production/uploads/64b02ec0e5000ae8a572ced5/6ifLntBU2ICQK7SW8WxKU.png
Lin Chen
user
Lin-Chen
6822ab54a79983c00c81655a
Lin Li
6822ab54a79983c00c81655b
Lin Yan
6822ab54a79983c00c81655c
Liying Chi
6822ab54a79983c00c81655d
Longxiang Liu
6822ab54a79983c00c81655e
Mengfei Du
6822ab54a79983c00c81655f
Mingxuan Wang
6822ab54a79983c00c816560
Ningxin Pan
6822ab54a79983c00c816561
Peibin Chen
6822ab54a79983c00c816562
Pengfei Chen
6822ab54a79983c00c816563
Pengfei Wu
6822ab54a79983c00c816564
Qingqing Yuan
6822ab54a79983c00c816565
Qingyao Shuai
6822ab54a79983c00c816566
Qiuyan Tao
6822ab54a79983c00c816567
Renjie Zheng
6822ab54a79983c00c816568
Renrui Zhang
6822ab54a79983c00c816569
Ru Zhang
6822ab54a79983c00c81656a
Rui Wang
6822ab54a79983c00c81656b
Rui Yang
6822ab54a79983c00c81656c
Rui Zhao
6822ab54a79983c00c81656d
Shaoqiang Xu
6822ab54a79983c00c81656e
Shihao Liang
6822ab54a79983c00c81656f
Shipeng Yan
6822ab54a79983c00c816570
Shu Zhong
6822ab54a79983c00c816571
Shuaishuai Cao
6822ab54a79983c00c816572
Shuangzhi Wu
6822ab54a79983c00c816573
Shufan Liu
6822ab54a79983c00c816574
Shuhan Chang
6822ab54a79983c00c816575
Songhua Cai
6822ab54a79983c00c816576
Tenglong Ao
6822ab54a79983c00c816577
Tianhao Yang
6822ab54a79983c00c816578
Tingting Zhang
6822ab54a79983c00c816579
Wanjun Zhong
6822ab54a79983c00c81657a
Wei Jia
6822ab54a79983c00c81657b
Wei Weng
6822ab54a79983c00c81657c
Weihao Yu
claimed_verified
2025-05-21T10:05:39.022Z
5df833bdda6d0311fd3d5403
https://cdn-avatars.huggingface.co/v1/production/uploads/5df833bdda6d0311fd3d5403/62OtGJEQXdOuhV9yCd4HS.png
Weihao Yu
user
whyu
6822ab54a79983c00c81657d
Wenhao Huang
6822ab54a79983c00c81657e
Wenjia Zhu
6822ab54a79983c00c81657f
Wenli Yang
6822ab54a79983c00c816580
Wenzhi Wang
6822ab54a79983c00c816581
Xiang Long
6822ab54a79983c00c816582
XiangRui Yin
6822ab54a79983c00c816583
Xiao Li
6822ab54a79983c00c816584
Xiaolei Zhu
6822ab54a79983c00c816585
Xiaoying Jia
6822ab54a79983c00c816586
Xijin Zhang
6822ab54a79983c00c816587
Xin Liu
6822ab54a79983c00c816588
Xinchen Zhang
claimed_verified
2025-05-14T07:36:07.529Z
653e5d31ffd60206c8b64bb5
https://cdn-avatars.huggingface.co/v1/production/uploads/653e5d31ffd60206c8b64bb5/bgztraPC27L6culMlJw4s.png
Xinchen Zhang
user
comin
6822ab54a79983c00c816589
Xinyu Yang
6822ab54a79983c00c81658a
Xiongcai Luo
6822ab54a79983c00c81658b
Xiuli Chen
6822ab54a79983c00c81658c
Xuantong Zhong
6822ab54a79983c00c81658d
Xuefeng Xiao
6822ab54a79983c00c81658e
Xujing Li
6822ab54a79983c00c81658f
Yan Wu
6822ab54a79983c00c816590
Yawei Wen
6822ab54a79983c00c816591
Yifan Du
6822ab54a79983c00c816592
Yihao Zhang
6822ab54a79983c00c816593
Yining Ye
6822ab54a79983c00c816594
Yonghui Wu
6822ab54a79983c00c816595
Yu Liu
6822ab54a79983c00c816596
Yu Yue
6822ab54a79983c00c816597
Yufeng Zhou
6822ab54a79983c00c816598
Yufeng Yuan
6822ab54a79983c00c816599
Yuhang Xu
6822ab54a79983c00c81659a
Yuhong Yang
6822ab54a79983c00c81659b
Yun Zhang
6822ab54a79983c00c81659c
Yunhao Fang
6822ab54a79983c00c81659d
Yuntao Li
6822ab54a79983c00c81659e
Yurui Ren
6822ab54a79983c00c81659f
Yuwen Xiong
6822ab54a79983c00c8165a0
Zehua Hong
claimed_verified
2025-05-16T07:12:49.775Z
66597ea2a45952e2144b526c
/avatars/7b91f85f667694a891c531de7681d75e.svg
hongzehua
user
hongzehua
6822ab54a79983c00c8165a1
Zehua Wang
6822ab54a79983c00c8165a2
Zewei Sun
6822ab54a79983c00c8165a3
Zeyu Wang
6822ab54a79983c00c8165a4
Zhao Cai
6822ab54a79983c00c8165a5
Zhaoyue Zha
6822ab54a79983c00c8165a6
Zhecheng An
6822ab54a79983c00c8165a7
Zhehui Zhao
6822ab54a79983c00c8165a8
Zhengzhuo Xu
6822ab54a79983c00c8165a9
Zhipeng Chen
6822ab54a79983c00c8165aa
Zhiyong Wu
6822ab54a79983c00c8165ab
Zhuofan Zheng
6822ab54a79983c00c8165ac
Zihao Wang
claimed_verified
2025-09-03T08:31:24.128Z
642e8c99c1b0f8e4e76bcaab
https://cdn-avatars.huggingface.co/v1/production/uploads/642e8c99c1b0f8e4e76bcaab/BOs9r0P9KyT9pEba9v0H4.png
Zihao Wang
user
zhwang4ai
6822ab54a79983c00c8165ad
Zilong Huang
claimed_verified
2025-05-14T07:36:02.269Z
63a430ec84a6a25c65bff20c
/avatars/3ab51214c491f28d8fe6b70c373d72aa.svg
Zilong Huang
user
speedinghzl
6822ab54a79983c00c8165ae
Ziyu Zhu
6822ab54a79983c00c8165af
Zuquan Song
Seed1.5-VL Technical Report
We present Seed1.5-VL, a vision-language foundation model designed to advance
general-purpose multimodal understanding and reasoning. Seed1.5-VL is composed
with a 532M-parameter vision encoder and a Mixture-of-Experts (MoE) LLM of 20B
active parameters. Despite its relatively compact architecture, it delivers
strong performance across a wide spectrum of public VLM benchmarks and internal
evaluation suites, achieving the state-of-the-art performance on 38 out of 60
public benchmarks. Moreover, in agent-centric tasks such as GUI control and
gameplay, Seed1.5-VL outperforms leading multimodal systems, including OpenAI
CUA and Claude 3.7. Beyond visual and video understanding, it also demonstrates
strong reasoning abilities, making it particularly effective for multimodal
reasoning challenges such as visual puzzles. We believe these capabilities will
empower broader applications across diverse tasks. In this report, we mainly
provide a comprehensive review of our experiences in building Seed1.5-VL across
model design, data construction, and training at various stages, hoping that
this report can inspire further research. Seed1.5-VL is now accessible at
https://www.volcengine.com/ (Volcano Engine Model ID:
doubao-1-5-thinking-vision-pro-250428)
Seed1.5-VL, a vision-language foundation model combining a vision encoder and a large MoE LLM, achieves state-of-the-art performance across various benchmarks and excels in multimodal reasoning tasks such as visual puzzles.
vision-language foundation model vision encoder Mixture-of-Experts (MoE) LLM multimodal understanding multimodal reasoning visual puzzles GUI control gameplay VLM benchmarks visual and video understanding