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What is Step 3.5 Flash?

Step 3.5 Flash represents a state-of-the-art open-source foundational language model crafted for sophisticated reasoning and agent-like functionality, prioritizing efficiency; it employs a sparse Mixture of Experts (MoE) framework that activates roughly 11 billion of its nearly 196 billion parameters for each token, which ensures both dense intelligence and rapid responsiveness. The architecture includes a 3-way Multi-Token Prediction (MTP-3) system, enabling the generation of hundreds of tokens per second and supporting intricate multi-step reasoning and task execution, while efficiently handling extensive contexts through a hybrid sliding window attention technique that reduces computational stress on large datasets or codebases. Its remarkable capabilities in reasoning, coding, and agentic tasks often rival or exceed those of much larger proprietary models, further enhanced by a scalable reinforcement learning mechanism that promotes ongoing self-improvement. This innovative design not only highlights Step 3.5 Flash's effectiveness but also positions it as a transformative force in the domain of AI language models, indicating its vast potential across a plethora of applications. As such, it stands as a testament to the advancements in AI technology, paving the way for future developments.

What is MiMo-V2.5?

Xiaomi MiMo-V2.5 is a powerful open-source AI model designed to deliver advanced agentic capabilities alongside native multimodal understanding. It can process and reason across text, images, and audio within a unified system, enabling more complex and realistic interactions. The model is built using a sparse Mixture-of-Experts architecture with hundreds of billions of parameters, allowing it to scale efficiently while maintaining strong performance. It supports an extended context window of up to one million tokens, making it suitable for long-horizon tasks and detailed workflows. MiMo-V2.5 incorporates dedicated visual and audio encoders that enhance its ability to interpret and analyze multimodal inputs. It is capable of performing a wide range of tasks, including coding, reasoning, document analysis, and multimedia understanding. The model demonstrates strong benchmark performance across coding, reasoning, and multimodal evaluation tests. It is optimized for token efficiency, reducing computational cost while maintaining high-quality outputs. MiMo-V2.5 is designed to integrate with development tools and frameworks for real-world use cases. Xiaomi has released the model as open source, providing access to its weights, tokenizer, and architecture. This allows developers to customize and deploy the model for specific applications. Its ability to combine perception and reasoning makes it suitable for advanced AI workflows. By unifying multimodality and agentic intelligence, MiMo-V2.5 represents a significant advancement in open-source AI technology.

Media

Media

Integrations Supported

BLACKBOX AI
Cline
GitHub
Hermes Agent
Hugging Face
Kilo Code
ModelScope
OpenClaw
OpenCode
Roo Code
Shiori
Vercel AI Gateway
Xiaomi MiMo
Xiaomi MiMo Studio
arXiv

Integrations Supported

BLACKBOX AI
Cline
GitHub
Hermes Agent
Hugging Face
Kilo Code
ModelScope
OpenClaw
OpenCode
Roo Code
Shiori
Vercel AI Gateway
Xiaomi MiMo
Xiaomi MiMo Studio
arXiv

API Availability

Has API

API Availability

Has API

Pricing Information

Free
Free Trial Offered?
Free Version

Pricing Information

Pricing not provided.
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

StepFun

Date Founded

2023

Company Location

China

Company Website

static.stepfun.com/blog/step-3.5-flash/

Company Facts

Organization Name

Xiaomi Technology

Date Founded

2010

Company Location

China

Company Website

mimo.xiaomi.com

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