GLM-5.3 launches on Baseten with major coding gains and 1M context

baseten · x · 2026-08-29

GLM-5.3 is now live on Baseten Model APIs (US only).

Key Updates:

Architecture: Runs on the same 744B-A40B MoE base as GLM-5.2, with capability gains driven by scaled post-training on realistic environments like full codebases, docs, and testing tools.
Coding: Significant coding improvements, with Terminal-Bench 3.0 jumping from 4.6% to 28.3% over GLM-5.2, plus better security analysis.
Agentic: Supports three thinking effort levels (low, high, max) for sustained planning and verification in agentic workflows.
Context: 1M token context window.
Pricing: Input $1.40/1M tokens, Cached input $0.14/1M tokens, Output $4.40/1M tokens.

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