Seed2.1
A Next-Generation Agent for Real-World Productivity
Overview
The Seed2.1 model family is officially released, offering two AI productivity models in different sizes: Pro and Turbo.
Seed2.1 brings major improvements to both general agents and code engineering. For high-value office work and complex everyday consultations, it reliably handles multi-step tasks—from project planning and file processing to tool use—and delivers practical results across tools and environments. In code engineering, it strengthens end-to-end delivery, enabling more reliable requirement understanding, coding, debugging, and validation in real development workflows.
The model family also advances core capabilities in knowledge, reasoning, and multimodal understanding, handling complex visual and video content more accurately. Together, these improvements provide a stronger foundation for agentic scenarios, code engineering, and frontier exploration.
Model Performance
Seed2.1 delivers significantly stronger general-agent capabilities, with standout performance on benchmarks such as GDPVal and more reliable delivery for high-value tasks.Seed2.1 greatly improves delivery stability in coding tasks, independently handling software architecture design and code implementation.Seed2.1 continues to strengthen visual understanding, spatial reasoning, and long-context processing, helping agents make steady progress on complex tasks.Seed2.1 achieves SOTA results across multiple video understanding benchmarks and continues to improve hour-long video processing, with more accurate understanding of temporal changes, actions, and physical motion.
Showcase
Seed2.1 further strengthens agent execution and coding delivery, enabling the model to make steady progress on complex real-world productivity tasks and deliver practical, verifiable results.
Generate lesson-plan slides, analyze complex spreadsheets, and produce industry reports across teaching, office, and research scenarios.
Seed2.1 further connects multimodal perception, understanding, and execution, enabling multimodal inputs to directly support generation, editing, and task execution.
Generate interactive pages directly from floor plans, design mockups, and videos.
Evaluation Results
Across a broad set of benchmarks, Seed2.1 delivers strong, competitive performance.
BenchmarkCapability
Seed2.1 Pro
Seed2.1 Turbo
Claude Opus 4.7
GPT-5.5
Gemini 3.1
Pro
BenchmarkCapability
Seed2.1 Pro
Seed2.1 Turbo
-
Gemini 3.5 Flash
Gemini 3.1
Pro
BenchmarkCapability
Seed2.1 Pro
Seed2.1 Turbo
Claude Opus 4.7
GPT-5.5
Gemini 3.1
Pro
KINAKnowledge
48.3
46.6
46.7
52.6
53.2
SuperGPQAKnowledge
70.8
67.4
68.5
72.7
76.6
BeyondAIMEReasoning
87.0
88.0
79.0
91.0
90.0
Workspace BenchHigh-Economic-Value
53.0
54.7
55.1
58.7
32.8
Agent Startup BenchHigh-Economic-Value
68.8
54.0
62.3
68.1
45.7
xDailyBenchWhite-Collar Office Work
61.0
56.4
69.0
73.0
35.2
NL2Repo-BenchLong-Horizon End-to-End Code
47.0
43.7
58.2
45.1
33.4
ProgramBenchLong-Horizon End-to-End Code
0/1/50.3
0/0/49.4
0/2.5/52.1
0.5/5.5/65.9
0/1/40.7
Terminal Bench 2.1Terminal Usage
71.0
67.6
71.7
73.8
70.7
SWE-AtlasDebugging
35.2
30.6
38.7
44.7
23.6
MathVision (w. Tool)MultiModal Reasoning
92.6
(94.5)
90.1
(92.7)
83.1
92.2
89.2
MMMU-Pro (w. Tool)MultiModal STEM
81.6
(82.7)
80.1
(82.2)
74.0
81.2
80.5
WorldVQAVisual Knowledge
53.0
48.6
35.9
34.6
44.3
ZEROBench (w. Tool)Visual Puzzle
18.0
(22.0)
11.0
(20.0)
8.0
13.0
12.0
BabyVisionPerception
73.7
62.9
22.2
55.9
54.4
CharXiv-RQ (w. Tool)Infographics
85.4
(86.4)
82.5
(83.6)
82.1
83.2
83.5
ERQASpatial Reasoning
72.0
71.3
52.5
64.5
70.8
MMLongBench-128KMultiModal Long-Context
78.3
76.9
-
-
70.7
BenchmarkCapability
Seed2.1 Pro
Seed2.1 Turbo
-
Gemini 3.5 Flash
Gemini 3.1
Pro
VideoMMELong Video Understanding
89.2
89
-
87.2
86.7
TOMATOMotion & Perception
79.5
56.8
-
71.9
60.4
MinervaVideo Reasoning
70.7
65.9
-
68.6
63.5
OVOBenchStreaming
80.7
79.2
-
64.5
64.1
VideoSimpleQAKnowledge
76.4
71.4
-
76
70