GLM-5.3-Flash vs Muse Spark 1.2
GLM-5.3-Flash and Muse Spark 1.2 are closely matched at 50.6 and 39.8 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 50.6 and 39.8.
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. GLM-5.3-Flash can generate longer responses up to 1,048,576 tokens, while Muse Spark 1.2 is limited 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 weeks ago
3w newerAug 5, 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-Flash is available from DeepInfra, FriendliAI, 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.