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Muse Spark 1.3

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Meta's multimodal reasoning model, with a second tier where prompts feed Meta's training

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TrustList summary

Muse Spark 1.3 is a multimodal reasoning model from Meta, released on 2 September 2026. It is available through Muse Code and the Meta Model API, and keeps a context window of 1 million tokens.

Features

  • Standard access: available through Muse Code and the Meta Model API.
  • Contributor tier: a lower-cost option on terms under which prompts, responses and usage patterns are fed back into Meta's training pipeline.
  • Continuity: keeps the 1M-token context carried over from version 1.2.

The two tiers differ in their terms as well as in their cost, so buyers should read each one separately.

Key facts

  • Developer: Meta
  • Released: 2 September 2026
  • Context window: 1 million tokens

Summary written by TrustList from the business's own published information, Oct 2026.

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Trust Score

4/ 100
Trust Score: New

An earned signal from verification, reviews, awards, transparency and engagement - the vendor can't buy it.

Verification
0/100 · 20%
Reviews
0/100 · 30%
Awards
0/100 · 15%
Transparency
18/100 · 20%
Engagement
0/100 · 15%
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Updated 9/16/2026

What the business tells TrustList

Founded
2026 (0 years) evidence sent

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