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Average Ratings 0 Ratings

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ease
features
design
support

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Write a Review

Description

GPT-5.2 marks a new milestone in the evolution of the GPT-5 series, bringing heightened intelligence, richer context understanding, and smoother conversational behavior. The updated architecture introduces multiple enhanced variants that work together to produce clearer reasoning and more accurate interpretations of user needs. GPT-5.2 Instant remains the main model for everyday interactions, now upgraded with faster response times, stronger instruction adherence, and more reliable contextual continuity. For users tackling complex or layered tasks, GPT-5.2 Thinking provides deeper cognitive structure, offering step-by-step explanations, stronger logical flow, and improved endurance across long-form reasoning challenges. The platform automatically determines which model variant is optimal for any query, ensuring users always benefit from the most appropriate capabilities. These advancements reduce friction, simplify workflows, and produce answers that feel more grounded and intention-aware. In addition to intelligence upgrades, GPT-5.2 emphasizes conversational naturalness, making exchanges feel more intuitive and humanlike. Overall, this release delivers a more capable, responsive, and adaptive AI experience across all forms of interaction.

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 Yes 
APIFree Yes 
Bash Yes 
ChatGPT Enterprise Yes 
ChatGPT Plus Yes 
FastRouter Yes 
Gemini Enterprise Agent Platform Yes 
Lorka Yes 
Magica Yes 
Microsoft Copilot Studio Yes 
Microsoft SharePoint Yes 
ModelScope No 
Prism Yes 
SQL Yes 
SimpleClaw Yes 
Simtheory Yes 
ThreadMaster.ai Yes 
Warp Yes 
Wazzap AI Yes 

Integrations

GitHub Yes 
APIFree No 
Bash No 
ChatGPT Enterprise No 
ChatGPT Plus No 
FastRouter No 
Gemini Enterprise Agent Platform No 
Lorka No 
Magica No 
Microsoft Copilot Studio No 
Microsoft SharePoint No 
ModelScope Yes 
Prism No 
SQL No 
SimpleClaw No 
Simtheory No 
ThreadMaster.ai No 
Warp No 
Wazzap AI No 

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 Yes 
iPad App Yes 
Android App Yes 
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

OpenAI

Founded

2015

Country

United States

Website

openai.com

Vendor Details

Company Name

StepFun

Founded

2023

Country

China

Website

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

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