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Description
GLM-5.3-Flash is a multimodal foundation model from Z.ai built for high-efficiency reasoning, coding, agents, and visual understanding. The model contains 320 billion parameters in total but activates only 18 billion parameters during inference, helping reduce compute requirements. Its architecture combines linear attention with sparse attention so it can efficiently handle both local dependencies and relevant information spread across very long contexts. Z.ai also introduced IndexPool to reduce the memory and latency overhead associated with long-context retrieval at context lengths reaching one million tokens. The model was pretrained on a 30-trillion-token multimodal dataset that incorporates both textual and visual information. GLM-5.3-Flash is designed for software engineering tasks, autonomous workflows, frontend development, computer use, document analysis, and other professional workloads that benefit from visual reasoning. Its visual coding capabilities allow it to inspect rendered interfaces, identify layout or interaction problems, and use those observations to revise its work. Benchmark results published by Z.ai show that it improves substantially over GLM-5.2 on multiple coding and agentic tests while remaining competitive with more expensive frontier models. GLM-5.3-Flash can be accessed through Z.ai services and is also available as downloadable model weights for deployment through supported open inference frameworks.
Description
Step 5 Preview represents the pinnacle of StepFun’s offerings for agentic tasks, tailored specifically for real-world applications in both software engineering and professional knowledge domains, excelling particularly in financial contexts. The model is equipped to handle inputs of text, images, and videos while boasting a substantial 1M-token context window, which is ideal for tasks that necessitate extensive information, tool usage, and ongoing progress towards achieving specific deliverables. It possesses the ability to scrutinize lengthy documents, integrate various source materials, and utilize conversation histories for effective cross-document question answering and organizing research. In the realm of programming and software development, it is proficient in multiple programming languages and capable of assisting with debugging, code modifications, verification processes, and the generation of tests. Furthermore, its advanced multi-step agent functionalities empower applications to access tools for information retrieval, document processing, in-depth research, and the creation of analytical reports. Additionally, the model's multimodal comprehension allows for the synthesis of images, videos, and text, enabling tasks such as analyzing charts and answering questions based on screenshots. Ultimately, this comprehensive capability suite positions Step 5 Preview as an invaluable asset for professionals across various sectors.
API Access
Has API
Yes
API Access
Has API
Yes
Integrations
Hermes Agent
Yes
OpenClaw
Yes
Alibaba Cloud
No
Alibaba Cloud Model Studio
No
Cherry Studio
No
ClinePass
No
Happy Shrimp 1.0
No
Hugging Face
No
Model Context Protocol (MCP)
No
ModelScope
No
Integrations
Hermes Agent
Yes
OpenClaw
Yes
Alibaba Cloud
Yes
Alibaba Cloud Model Studio
Yes
Cherry Studio
Yes
ClinePass
Yes
Happy Shrimp 1.0
Yes
Hugging Face
Yes
Model Context Protocol (MCP)
Yes
ModelScope
Yes
Pricing Details
$0.15 per 1M tokens (input)
Input: $0.15 per 1M tokens
Output: $0.50 per 1M tokens
Cached input: $0.03 per 1M tokens
Output: $0.50 per 1M tokens
Cached input: $0.03 per 1M tokens
Free Trial
No
Free Version
No
Pricing Details
$0.04 per input
Free Trial
No
Free Version
No
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
No
iPad App
No
Android App
No
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
Z.ai
Founded
2019
Country
China
Website
z.ai
Vendor Details
Company Name
StepFun
Founded
2023
Country
United States
Website
platform.stepfun.ai/docs/en/guides/models/step-5-preview