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Muse Spark 1.3: price, performance and context
Proprietary Muse Spark 1.3 by Meta costs $1.25 per 1M input and $4.25 per 1M output tokens, handles up to 1M tokens in one request (≈ 3,100 pages of text) and scores 48.1 points on the AgentKernel performance index, rank 8 of 212.
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Updated Oct 09, 2026, 16:46 UTC · meta/muse-spark-1.3
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Key facts
- Licence
- Proprietary: no public weights, only through a provider API
- Input / 1M tokens
- $1.25
- Output / 1M tokens
- $4.25
- Context window
- 1M tokens
- Max. output
- 943.7K tokens
- Performance index
- 48.1 points · rank 8 of 212
- Coding index
- 75.8 points · rank 11 of 119
- Agentic index
- 55.5 points · rank 4 of 91
- Cost at your usage
- $2.313 / month
- Knowledge cutoff
- n/a
- In the catalog since
- Sep 02, 2026
- Capabilities
- Reasoning, Vision, Tool Calling, Files
Placements by task
What do you get for $10.00?
Rules of thumb from the cost calculator, base rates without caching or taxes.
| Task | Cost per task | For $10.00 |
|---|
| Chat repliesA question with a short history, a detailed answer | $0.003 | 4,000 |
| Email draftsBullet points in, a finished email out | $0.002 | 5,000 |
| Document summariesRead 10 pages, write a one-page summary | $0.006 | 1,600 |
| Code reviewsReview and comment on 500 lines of code | $0.011 | 900 |
| Book analysesAnalyse a 300-page book in one go | $0.134 | 74 |
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