Meta: Muse Spark 1.3 vs Z.ai: GLM 5.3 Flash

For a sample job of 1 million input tokens and 250,000 output tokens, GLM 5.3 Flash costs $0.098 and Muse Spark 1.3 costs $2.31, so GLM 5.3 Flash is about 23.6 times cheaper for the same work.

Both read up to 1,048,576 tokens at once, roughly 1,573 pages of text.

On our blended benchmark score Muse Spark 1.3 leads 81.7 to 69.6.

Across the 20 tasks where they differ, Muse Spark 1.3 scores higher on 13 (SQL Generation, Code Review, Code Refactoring and others), GLM 5.3 Flash on 7 (Code Completion, Code Documentation, Regex Writing and others).

Muse Spark 1.3 was released in September 2026 and GLM 5.3 Flash in August 2026.

Pick Muse Spark 1.3 if you need benchmark performance; pick GLM 5.3 Flash if you need lower cost.

Costs use current list prices per million tokens; page counts assume about 0.75 words per token and 500 words per page.