Breaking

Meta Offers Cheaper Muse Spark Access in Exchange for Training Data

September 3, 2026 at 14:21 EDT

Foundation Models
AI Agents
Software Dev & Coding

Meta is offering developers a sharply cheaper way to use its Muse Spark model if they allow Meta to use their prompts and model outputs to improve future products. The contributor tier cuts input pricing from $1.25 to $0.10 per million tokens and output pricing from $4.25 to $0.20.

September 3 · Meta

Meta puts a price on model-training access

Muse Spark is far cheaper when developers share prompts and outputs that Meta can use to improve its products.

Input price per 1M tokens

The discount is visible in the rate card

Each block represents $0.05 per 1M input tokens.

$1.25

Standard tier

$0.10

Contributor tier

Contributor input is 12.5x cheaper at the listed rate.

$0.20 Contributor output per 1M tokens

About 95% Overall discount described by Meta

1,000+ Tool calls in a kernel test

24h Maximum reported test duration

What the discount unlocks

Lower-cost prototyping
More room for agent experiments
Access to a coding-focused model

What changes

Prompts and outputs can improve Meta products
Data terms matter for proprietary code
Early reliability evidence remains limited

Built for work that runs longer

Muse Code pairs Muse Spark with persistent background agents and a restart-safe event log for large-repository work.

The price choice is also a data-governance choice.

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