All tasks / Comparisons

GLM-5.3 vs Muse Spark 1.3

Compared only on public benchmark results, across the 5 tasks where both are listed: Muse Spark 1.3 is a tier higher in 2 of 5 shared tasks, they share a tier in 3.

GLM-5.3

Z.ai's open-weights GLM model line for reasoning, coding and agentic tasks.

Vendor: Z.ai
Weights: Open: run it yourself
Released: 14 Aug 2026
API price: $1.4 in / $4.4 out per 1M tokens
GPU memory to run locally: ~425 GB
License: GLM-5.3 License (custom; HF tag 'glm-5.3'; LMArena lists MIT)
Last verified: 18 Oct 2026

Alternatives to GLM-5.3

Muse Spark 1.3

Meta's mid-tier proprietary Muse model line, offered through Meta's API.

Vendor: Meta
Weights: Closed: API and apps only
Released: Sep 2026
API price: $1.25 in / $4.25 out per 1M tokens
License: proprietary
Last verified: 18 Oct 2026

Alternatives to Muse Spark 1.3

Task by task

Task	GLM-5.3	Muse Spark 1.3	Higher tier
Chat & assistants Models	A1,479 on LMArena Text Arena (overall, style control) · Local	S1,494 on LMArena Text Arena (overall, style control) · Cloud	Muse Spark 1.3
Writing Models	A1,453 on LMArena Text Arena: Creative Writing (style control) · Local	A1,461 on LMArena Text Arena: Creative Writing (style control) · Cloud	Same tier
Coding Models	C1,622 on LMArena WebDev / Code Arena (overall) · Local	B1,659 on LMArena WebDev / Code Arena (overall) · Cloud	Muse Spark 1.3
Vector graphics & logos Models	C1,293 on Design Arena SVG · Local	C1,323 on Design Arena SVG · Cloud	Same tier
Slides & presentations Models	A1,255 on Design Arena Python-PPTX Slides · Local	A1,244 on Design Arena Python-PPTX Slides · Cloud	Same tier

A tier spans a range of scores, and small gaps on a leaderboard are often within its margin of error, so only a different tier counts as ahead. How we rank.

Same benchmark, both results

Benchmark	GLM-5.3	Muse Spark 1.3	Snapshot
Artificial Analysis Intelligence Index Composite index over Artificial Analysis' own evaluation suite, higher is better	45 GLM-5.3 (Max)	48 Muse Spark 1.3 (Max)	18 Oct 2026
Design Arena Python-PPTX Slides Elo rating from crowdsourced blind pairwise votes on PowerPoint decks that models build with python-pptx in Design Arena's agent harness, higher is better	1,255 GLM-5.3	1,244 Muse Spark 1.3 (xhigh)	18 Oct 2026
Design Arena SVG Elo rating from crowdsourced blind pairwise votes on SVG markup that models generate from a prompt (icons, illustrations, diagrams, artistic compositions), higher is better	1,293 GLM-5.3	1,323 Muse Spark 1.3 Max	19 Oct 2026
EQ-Bench Creative Writing v3 Elo score from LLM-judged pairwise comparisons of creative-writing outputs (rubric score shown alongside), higher is better	2,075 GLM-5.3	1,906 muse-spark-1.3	24 Sep 2026
LMArena Text Arena (overall, style control) Arena score (Bradley-Terry rating from pairwise human votes, style-controlled default view), higher is better	1,479 glm-5.3-max	1,494 Muse Spark 1.3 (Max)	15 Oct 2026
LMArena Text Arena: Creative Writing (style control) Arena score (Bradley-Terry rating from pairwise human votes, creative-writing prompts only, style-controlled view), higher is better	1,453 glm-5.3-max	1,461 Muse Spark 1.3 (Max)	15 Oct 2026
LMArena WebDev / Code Arena (overall) Arena score (Bradley-Terry rating from pairwise human votes on web-app generation), higher is better	1,622 GLM-5.3 (Max)	1,659 Muse Spark 1.3 (Max)	18 Oct 2026