Breaking

Meta Releases Muse Spark 1.3 With Cheaper Contributor Tier for Agentic Coding

September 10, 2026 at 20:41 EDT

Foundation Models
AI Agents
Software Dev & Coding

Meta has released Muse Spark 1.3 for Muse Code and Meta Model API, pairing stronger long-horizon agent and coding performance with a Contributor tier priced at $0.10 per million input tokens and $0.20 per million output tokens.

September 2, 2026 · Meta

Muse Spark 1.3 makes agentic coding cheaper

Meta’s new model targets longer coding and agent workflows. Its Contributor tier sharply lowers token prices in exchange for permission to use prompts and completions for model improvement.

$0.10

Contributor input / 1M tokens

$0.20

Contributor output / 1M tokens

Context window

Input pricing: same model, 12.5× gap

Each block represents $0.10 per million input tokens.

Standard $1.25

Contributor $0.10

Useful for

Experimentation, prototyping, refactoring, and non-sensitive coding tasks.

Watch the trade-off

Contributor prompts and completions may be used to improve Meta’s models.

What changes in practice

Lower token cost does not remove the need for reliability testing.

Early developer reports cite strong value for coding alongside looping, reliability, and tool-calling concerns.

Continue reading

The rest of this article is for AI News Blitz readers. Choose an option below to keep reading.