Z.ai's GLM-5.1 Demonstrates Long-Horizon SVG Animations
Chinese AI lab Z.ai on April 7, 2026 released GLM-5.1, a 754B-parameter model with 1.51TB weights published under the MIT license on Hugging Face and accessible via OpenRouter. The model generated an SVG pelican with accompanying CSS animations, diagnosed a CSS transform/SVG positioning bug, and suggested using SVG <animateTransform>. The weights and runnable examples enable immediate practitioner testing.
Scoring Rationale
Official same-day release with full weights and runnable examples boosts credibility and high actionability; novelty is moderate because GLM-5.1 matches GLM-5 in size and paper. The model's concrete code-output behavior and practical bugfix guidance raise practitioner value, so the score is high for usability but tempered by limited conceptual novelty.
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Sources
- Read OriginalGLM-5.1: Towards Long-Horizon Taskssimonwillison.net
