GLM-5.3 vs Muse Spark 1.1
GLM-5.3 shows notably better performance in the majority of benchmarks. Muse Spark 1.1 is 1.1x cheaper per token.
Zhipu AI · Meta · Updated for 2026
Which is better?
GLM-5.3 outperforms in 3 benchmarks (DeepSWE 1.1, Humanity's Last Exam, Terminal-Bench 2.1), while Muse Spark 1.1 is better at 1 benchmark (Toolathlon). GLM-5.3 shows notably better performance in the majority of benchmarks.
On price, Muse Spark 1.1 is roughly 1.1x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Muse Spark 1.1 also accepts a larger context window (1,048,576 input tokens), making it the stronger choice for long documents and large codebases.
Based on current benchmark, pricing, and model metadata for 2026.
Choose GLM-5.3
- you want the strongest raw capability — it leads on 3 of 4 shared benchmarks
- you want the most recent training data — it shipped Aug 2026
Choose Muse Spark 1.1
- cost matters — it's about 1.1x cheaper per token
- you process long inputs — it offers a 1,048,576 token context window
At a glance
The differences that matter most.
Performance Benchmarks
Comparative analysis across standard metrics
GLM-5.3 outperforms in 3 benchmarks (DeepSWE 1.1, Humanity's Last Exam, Terminal-Bench 2.1), while Muse Spark 1.1 is better at 1 benchmark (Toolathlon).
GLM-5.3 shows notably better performance in the majority of benchmarks.
Arena Performance
Playground indexes and blind preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, GLM-5.3 ($1.40/1M tokens) is 1.1x more expensive than Muse Spark 1.1 ($1.25/1M tokens).
For output processing, GLM-5.3 ($4.40/1M tokens) is 1.0x more expensive than Muse Spark 1.1 ($4.25/1M tokens).
In conclusion, GLM-5.3 is more expensive than Muse Spark 1.1.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Muse Spark 1.1 accepts 1,048,576 input tokens compared to GLM-5.3's 1,000,000 tokens. Muse Spark 1.1 can generate longer responses up to 131,072 tokens, while GLM-5.3 is limited to 128,000 tokens.
Input Capabilities
Supported data types and modalities
Muse Spark 1.1 supports multimodal inputs, whereas GLM-5.3 does not.
Muse Spark 1.1 can handle both text and other forms of data like images, making it suitable for multimodal applications.
GLM-5.3
Muse Spark 1.1
Release Timeline
When each model was launched
GLM-5.3 was released on 2026-08-14, while Muse Spark 1.1 was released on 2026-07-09.
GLM-5.3 is 1 month newer than Muse Spark 1.1.
Aug 14, 2026
1 weeks ago
1mo newerJul 9, 2026
1 months ago
Knowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
GLM-5.3 is available from ZAI. Muse Spark 1.1 is available from Meta Model API.
GLM-5.3
Muse Spark 1.1
Outputs Comparison
Judge for yourself.
Run your own prompts against GLM-5.3 and Muse Spark 1.1 side-by-side, then vote on the output you prefer.
FAQ
Common questions about GLM-5.3 vs Muse Spark 1.1.