@baseten: Today, we're releasing GLM-5.3 Fast: one of the most intelligent open-weight models ever at an even higher TPS. Designe…
Summary
Z.AI releases GLM-5.3 Fast, an advanced open-weight AI model optimized for agentic coding and cybersecurity, featuring a 744B-A40B MoE architecture with substantial benchmark improvements.
View Cached Full Text
Cached at: 09/04/26, 02:20 AM
Today, we’re releasing GLM-5.3 Fast: one of the most intelligent open-weight models ever at an even higher TPS.
Designed for real-time use cases that demand consistent performance.
Get access here: https://t.co/YoheQJVWZp https://t.co/cL3dKRxfaO
GLM-5.3 Fast | Model library
Source: https://www.baseten.co/library/glm-53-fast/ GLM-5.3 is Z.AI’s latest model for agentic engineering, with stronger coding, long-horizon agentic capabilities, and emergent cybersecurity analysis: all achieved through scaled post-training on the same base model as GLM-5.2.
GLM-5.3 runs on the same 744B-A40B MoE base as GLM-5.2, with every capability gain coming from scaled post-training across more diverse, realistic task environments: full codebases, documentation, testing tools, and multi-step workflows. The result is Z.AI’s strongest coding model to date, with the largest jumps on the longest-horizon benchmarks: Terminal-Bench 3.0 moves from 4.6% to 28.3% over GLM-5.2, in addition to notable gains in vulnerability discovery and security analysis.
GLM-5.3 supports three thinking effort levels (low, high, and max, with max recommended for coding), making it a strong fit for agentic coding workflows that require sustained planning, implementation, and verification at production scale.
✕
GLM-5.3 Agentic Coding Performance
Similar Articles
GLM-5.3 is now open-weight
GLM-5.3, an enhanced open-weight AI model for agentic coding and cyber defense, is now available for download and customization, with significant improvements over GLM-5.2 and state-of-the-art performance on multiple benchmarks.
GLM-5.2 is a step change for open agents
Z.ai released GLM-5.2, an open-weight AI model that represents a step change for open agents, with strong benchmark performance and community hype, positioning it as the only open model competing with top closed models from OpenAI and Anthropic.
GLM-5.2 is the new leading open weights model on Artificial Analysis
Z ai's GLM-5.2 has become the new leading open weights model on the Artificial Analysis Intelligence Index, scoring 51 and outperforming competitors like MiniMax-M3 and DeepSeek V4 Pro. The model features 744B total parameters, 40B active, MIT license, and 1M context window.
zai-org/GLM-5.1
GLM-5.1 is a next-generation flagship AI model optimized for agentic engineering with significantly stronger coding capabilities, achieving state-of-the-art performance on SWE-Bench Pro and demonstrating superior long-horizon task handling through extended iteration and tool use.
@svpino: GLM-5.3 is now open-weight! You can download it from HuggingFace or run it using Atomic Agent. No matter what Big AI sa…
GLM-5.3 has been released as an open-weight model, downloadable from HuggingFace or runnable via Atomic Agent, with cost comparisons showing efficiency improvements.