Meta: Muse Spark 1.3 vs Meta: Muse Spark 1.2 Contributor

For a sample job of 1 million input tokens and 250,000 output tokens, Muse Spark 1.2 Contributor costs $0.15 and Muse Spark 1.3 costs $2.31, so Muse Spark 1.2 Contributor is about 15.4 times cheaper for the same work.

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

Across the 20 tasks where they differ, Muse Spark 1.3 scores higher on 16 (SQL Generation, Code Review, Code Refactoring and others), Muse Spark 1.2 Contributor on 4 (Code Completion, JSON Extraction, Bulk Data Labeling and others).

Muse Spark 1.3 was released in September 2026 and Muse Spark 1.2 Contributor in August 2026.

Pick Muse Spark 1.3 if you need the stronger all-round task scores; pick Muse Spark 1.2 Contributor 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.