Seed2.1 Pro

Seed2.1 Pro

ByteDance
+
+

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About

Seed2.1 Pro is a next-generation AI productivity model built to handle complex, real-world work across general agents, code engineering, and multimodal understanding. It reliably executes multi-step tasks for high-value office work and everyday consultation, including project planning, file processing, research, tool use, spreadsheet analysis, lesson-plan slide generation, and industry report creation across tools and environments. In software development workflows, Seed2.1 Pro strengthens end-to-end delivery by improving requirement understanding, architecture design, coding, debugging, implementation, and validation. Its agent capabilities are designed to make steady progress on difficult tasks and return practical, verifiable results rather than isolated responses. The model also advances knowledge, reasoning, visual understanding, spatial reasoning, and long-context processing, giving agents a stronger foundation for complex decision-making and execution.

About

Step 5 Preview is StepFun’s flagship model for agentic work, designed for real-world tasks across software engineering and professional knowledge work, with particular strength in finance. It natively supports text, image, and video input and provides a 1M-token context window, enabling tasks that require large amounts of information, tool calls, and continuous progress toward a deliverable. The model can analyze long documents, multiple source materials, and conversation history for cross-document question answering and research organization. For programming and software engineering, it works across multiple languages and can support troubleshooting, code changes, verification, and test creation. Its multi-step agent capabilities let applications provide tools for retrieving information, processing documents, conducting deep research, and producing analytical reports. Multimodal understanding combines images, video, and text for chart analysis, screenshot question answering, etc.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

AI teams seeking a multimodal agent model for complex productivity, coding, reasoning, tool use, and long-horizon tasks

Audience

Developers, engineering teams, and knowledge-work organizations wanting to build multimodal AI agents for coding, research, analysis, and other complex multi-step tasks

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

No information available.
Free Version
Free Trial

Pricing

$0.04 per input
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

ByteDance
Founded: 2012
China
seed.bytedance.com/en/seed2_1

Company Information

StepFun
Founded: 2023
United States
platform.stepfun.ai/docs/en/guides/models/step-5-preview

Alternatives

Alternatives

No Alternatives
GPT-5.6 Sol

GPT-5.6 Sol

OpenAI
Seed2.1 Turbo

Seed2.1 Turbo

ByteDance
Kimi K2.6

Kimi K2.6

Moonshot AI

Categories

Categories

Integrations

Hermes Agent
OpenClaw
Alibaba Cloud
Cherry Studio
Claw Code
ClinePass
Doubao
Happy Shrimp 1.0
Hugging Face
Kilo Code
Model Context Protocol (MCP)
ModelScope
Odysseus
OfoxAI
Ollama
OpenRouter
Python
Qwen Studio
QwenCloud
QwenWork

Integrations

Hermes Agent
OpenClaw
Alibaba Cloud
Cherry Studio
Claw Code
ClinePass
Doubao
Happy Shrimp 1.0
Hugging Face
Kilo Code
Model Context Protocol (MCP)
ModelScope
Odysseus
OfoxAI
Ollama
OpenRouter
Python
Qwen Studio
QwenCloud
QwenWork
Claim Seed2.1 Pro and update features and information
Claim Seed2.1 Pro and update features and information
Claim Step 5 Preview and update features and information
Claim Step 5 Preview and update features and information