Meta releases Muse Spark 1.3, its most powerful AI model yet
Meta announced the release of Muse Spark 1.3, which it calls its most powerful large language model so far. The company said developers can access the new model through a paid offering.
First seen 2 Sep, 19:35 UTC on Hacker News6 sourcesLast update 47d ago
MetaLaunch · 2 Sep
Muse Spark 1.3
Flagship model launch
$1.25 / $4.25per M tokens, in / out
1Mcontext
How Muse Spark 1.3 compares
List prices per million tokens, context and Arena's text leaderboard, against Meta's other top models and the leading labs' best. The percentages are Muse Spark 1.3's price against each.
| Model | Released | Input | Output | Context | Arena |
|---|---|---|---|---|---|
| Muse Spark 1.3 | September 2026 | $1.25 | $4.25 | 1M | #8 1494 |
| Muse Spark 1.2 | August 2026 | $1.25 | $4.25 | 1M | #9 1492 |
| Muse Wonder | October 2026 | $4.00 -69% | $20.00 -79% | 1M | not ranked yet |
| Claude Opus 5.5 | September 2026 | $4.00 -69% | $20.00 -79% | 1M | #2 1507 |
| GPT-6 Astra | September 2026 | $10.00 -87% | $50.00 -91% | 1.05M | #30 1475 |
| Gemini 4 Argon | October 2026 | $2.00 -37% | $10.00 -57% | 1M | #1 1525 |
Arena ranks the best effort setting of each model among all models on its text leaderboard. Every model and price.
What the sources say
Linked, never rewritten. Official means the lab itself.
Official0
No word from Meta yet.
Press5
OpenRouter· 2 Sep, 19:45Meta: Muse Spark 1.3 listed on OpenRouterOpenRouter· 2 Sep, 20:38Meta: Muse Spark 1.3 Contributor listed on OpenRouterSiliconANGLE· 3 Sep, 02:41Meta says it has caught up with Anthropic and OpenAI with Muse Spark 1.3, its most powerful AI model yetThe Decoder· 3 Sep, 11:45Meta closes in on the top with Muse Spark 1.3, and undercuts rivals on priceTechCrunch· 3 Sep, 18:19Meta is paying to peek at how you use their latest AI modelHow it unfolded
Every source in the order it appeared. Times in UTC.
2 Sep 19:35Hacker News Muse Spark 1.32 Sep 19:45OpenRouter Meta: Muse Spark 1.3 listed on OpenRouter2 Sep 20:38OpenRouter Meta: Muse Spark 1.3 Contributor listed on OpenRouter3 Sep 02:41SiliconANGLE Meta says it has caught up with Anthropic and OpenAI with Muse Spark 1.3, its most powerful AI model yet3 Sep 11:45The Decoder Meta closes in on the top with Muse Spark 1.3, and undercuts rivals on price3 Sep 18:19TechCrunch Meta is paying to peek at how you use their latest AI model
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