GLM-5.3-Flash vs Muse Spark 1.2
GLM-5.3-Flash and Muse Spark 1.2 are closely matched at 51.6 and 41.1 on the LLM Stats Score. Muse Spark 1.2 is 1.9x cheaper per token.
Zhipu AI · Meta · Updated for 2026
Which is better?
GLM-5.3-Flash and Muse Spark 1.2 are closely matched on the overall LLM Stats Score at 51.6 and 41.1.
In the 2 individual benchmarks reported for both models, GLM-5.3-Flash wins 2; this is a narrower head-to-head signal than the composite indexes.
On price, Muse Spark 1.2 is roughly 1.9x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.
Choose GLM-5.3-Flash
- you value its reported benchmark strengths — it wins 2 of 2 exact shared results
- you want the most recent training data — it shipped Aug 2026
- you need open weights you can self-host or fine-tune
Choose Muse Spark 1.2
- cost matters — it's about 1.9x cheaper per token
At a glance
The differences that matter most.
Individual benchmarks
15 reported for GLM-5.3-Flash · 3 for Muse Spark 1.2
GLM-5.3-Flash outperforms in 2 benchmarks (DeepSWE 1.1, Terminal-Bench 2.1), while Muse Spark 1.2 is better at 0 benchmarks.
GLM-5.3-Flash significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Pricing Analysis
Price comparison per million tokens
For input processing, GLM-5.3-Flash ($0.15/1M tokens) is 1.5x more expensive than Muse Spark 1.2 ($0.10/1M tokens).
For output processing, GLM-5.3-Flash ($0.50/1M tokens) is 2.5x more expensive than Muse Spark 1.2 ($0.20/1M tokens).
In conclusion, GLM-5.3-Flash is more expensive than Muse Spark 1.2.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
Both models have the same input context window of 1,048,576 tokens. Both models can generate responses up to 131,072 tokens.
Input capabilities
Documented input modalities across available providers
Both GLM-5.3-Flash and Muse Spark 1.2 support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
GLM-5.3-Flash
Muse Spark 1.2
License
Usage and distribution terms
GLM-5.3-Flash is licensed under MIT, while Muse Spark 1.2 uses a proprietary license.
License differences may affect how you can use these models in commercial or open-source projects.
MIT
Open weights
Proprietary
Closed source
Release Timeline
When each model was launched
GLM-5.3-Flash was released on 2026-08-26, while Muse Spark 1.2 was released on 2026-08-05.
GLM-5.3-Flash is 1 month newer than Muse Spark 1.2.
Aug 26, 2026
2 days ago
3w newerAug 5, 2026
3 weeks 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-Flash is available from DeepInfra, Novita, ZAI. Muse Spark 1.2 is available from Meta Model API.
GLM-5.3-Flash
Muse Spark 1.2
Outputs Comparison
Judge for yourself.
Run your own prompts against GLM-5.3-Flash and Muse Spark 1.2 side-by-side, then vote on the output you prefer.
FAQ
Common questions about GLM-5.3-Flash vs Muse Spark 1.2.