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Description

GLM-5.3 is Z.ai’s advanced coding and agentic reasoning model built through scaled post-training on top of the GLM-5.2 base model. The release focuses on frontier coding, long-horizon software engineering, agent tasks, cyber evaluation, and reinforcement learning at scale. GLM-5.3 improves significantly over GLM-5.2 on complex coding benchmarks, real-world engineering environments, Terminal Bench 3.0, DeepSWE, Agents’ Last Exam, and Z.ai’s internal Code Bench. The model is trained on environments that resemble real professional work, including tasks involving codebases, infrastructure, documentation, compute clusters, experiments, bottleneck diagnosis, implementation, testing, and measurable optimization. Z.ai’s post-training stack includes IndexShare for efficient long-context processing, SAO for reinforcement learning on long-horizon tasks, and slime for large-scale asynchronous training. GLM-5.3 supports three thinking effort levels, including low, high, and max, with max recommended for coding tasks. The model also demonstrates emergent cyber capabilities across vulnerability discovery and exploitation benchmarks, prompting continued safety evaluation and hardening before weights are released. GLM-5.3 can be used through the GLM Coding Plan, ZCode, Claude Code, OpenCode, and other coding agent workflows. By combining stronger coding performance, long-horizon task execution, post-training scale, cyber evaluation, reasoning effort controls, and coding-agent integrations, GLM-5.3 supports advanced developer and research workflows.

Description

OpenAI Astra is an upcoming AI model concept built for users and organizations that need more capable multimodal reasoning, autonomous execution, and end-to-end task completion. The model would be designed to understand complex instructions, process multiple types of input, use tools, and produce polished outputs across professional workflows. Astra would support advanced use cases such as software engineering, research automation, document analysis, data interpretation, creative generation, enterprise search, and AI agent orchestration. Its multimodal capabilities would allow users to work across text, images, files, interfaces, and potentially voice-based interactions in a more natural way. For developers, Astra could provide a foundation for building AI-native applications, copilots, assistants, and agent systems. For businesses, it could help automate multi-step work that normally spans teams, tools, and long review cycles. The model would likely emphasize reliability, safety, context retention, and stronger task follow-through. Astra would be especially valuable for workflows where users need not only answers, but completed work that can be inspected, refined, and deployed. By combining frontier reasoning, multimodal intelligence, tool use, and agentic execution, OpenAI Astra would help push AI from conversation toward practical collaboration.

API Access

Has API

API Access

Has API

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Screenshots View All

No images available

Integrations

Amp
Augment Code
C#
C++
Claude Code
Claw Code
Cline
Cursor
Dessix
Factory Droid
HTML
Hermes Agent
Java
JetBrains Junie
Kilo Code
LM Studio
PyTorch
SQL
Sup AI
Vercel AI Gateway

Integrations

Amp
Augment Code
C#
C++
Claude Code
Claw Code
Cline
Cursor
Dessix
Factory Droid
HTML
Hermes Agent
Java
JetBrains Junie
Kilo Code
LM Studio
PyTorch
SQL
Sup AI
Vercel AI Gateway

Pricing Details

Free
Open source
Free Trial
Free Version

Pricing Details

No price information available.
Free Trial
Free Version

Deployment

Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook

Deployment

Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook

Customer Support

Business Hours
Live Rep (24/7)
Online Support

Customer Support

Business Hours
Live Rep (24/7)
Online Support

Types of Training

Training Docs
Webinars
Live Training (Online)
In Person

Types of Training

Training Docs
Webinars
Live Training (Online)
In Person

Vendor Details

Company Name

Z.ai

Founded

2023

Country

China

Website

z.ai/

Vendor Details

Company Name

OpenAI

Founded

2015

Country

United States

Website

openai.com

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