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features
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Description

AfterQuery serves as a practical research platform aimed at generating high-quality training datasets for cutting-edge artificial intelligence models by emulating the cognitive processes of seasoned professionals as they think, reason, and tackle challenges in their fields. By converting real-world work scenarios into organized datasets, it provides insights that transcend mere outputs, incorporating intricate decision-making, trade-offs, and contextual reasoning that typical internet-sourced data fails to capture. The platform collaborates closely with subject matter experts to produce supervised fine-tuning data, which includes prompt–response pairs alongside comprehensive reasoning trails, in addition to reinforcement learning datasets featuring expertly crafted prompts and assessment frameworks that translate subjective evaluations into scalable reward mechanisms. Furthermore, it develops customized agent environments using various APIs and tools, facilitating the training and evaluation of models within realistic workflows while also tracking computer-use trajectories that illustrate how individuals engage with software in a detailed, step-by-step manner. This multi-faceted approach ensures that the data generated not only reflects expert insights but is also adaptable for a wide range of applications in the evolving landscape of artificial intelligence.

Description

Step 3.5 Flash is a cutting-edge open-source foundational language model designed for advanced reasoning and agent-like capabilities, optimized for efficiency; it utilizes a sparse Mixture of Experts (MoE) architecture that activates only approximately 11 billion of its nearly 196 billion parameters per token, ensuring high-density intelligence and quick responsiveness. The model features a 3-way Multi-Token Prediction (MTP-3) mechanism that allows it to generate hundreds of tokens per second, facilitating complex multi-step reasoning and task execution while efficiently managing long contexts through a hybrid sliding window attention method that minimizes computational demands across extensive datasets or codebases. Its performance on reasoning, coding, and agentic tasks is formidable, often matching or surpassing that of much larger proprietary models, and it incorporates a scalable reinforcement learning system that enables continuous self-enhancement. Moreover, this innovative approach positions Step 3.5 Flash as a significant player in the field of AI language models, showcasing its potential to revolutionize various applications.

API Access

Has API Yes 

API Access

Has API Yes 

Screenshots View All

Screenshots View All

Integrations

GitHub No 
Hugging Face No 
Model Context Protocol (MCP) Yes 
ModelScope No 
arXiv No 

Integrations

GitHub Yes 
Hugging Face Yes 
Model Context Protocol (MCP) No 
ModelScope Yes 
arXiv Yes 

Pricing Details

No price information available.
Free Trial No 
Free Version No 

Pricing Details

Free
Free Trial No 
Free Version Yes 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App Yes 
iPad App Yes 
Android App Yes 
Windows No 
Mac No 
Linux No 
Chromebook No 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Vendor Details

Company Name

AfterQuery

Founded

2025

Country

United States

Website

www.afterquery.com

Vendor Details

Company Name

StepFun

Founded

2023

Country

China

Website

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

Product Features

Product Features

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