Meta: Muse Spark 1.3 Contributor API

Muse Spark 1.3 is Meta's latest model for agentic and coding work, improving multi-step tool use, browser and long-horizon tasks, and coding over 1.2, with image, video and PDF input and a 1M-token context window. The Contributor tier is far cheaper, but Meta may train its models on your prompts and completions.

Frequently Asked Questions

What is the context window of Muse Spark 1.3 Contributor?

Muse Spark 1.3 Contributor supports a context window of up to 1,048,576 tokens.

Does Muse Spark 1.3 Contributor support function calling?

Yes. Muse Spark 1.3 Contributor supports tool / function calling.

Does Muse Spark 1.3 Contributor support reasoning?

Yes. Muse Spark 1.3 Contributor is a reasoning-capable model.