Muse Spark 1.3
Meta · Flagship · Sep 2, 2026New
Meta's current flagship from Meta Superintelligence Labs, tuned for agentic and coding work and unusually fast for its class.
- Artificial Analysis Intelligence Index
- 48.1#7 of 29 · max effort
- API price per 1M tokens
- $1.25 / $4.25input / output · $2 blended
- Context window
- 1Mtokens
- Output speed
- 209 t/s64s to first answer at max effort
Benchmark results
Each row shows this model (blue) against every other model in the catalogue (grey), worst on the left, best on the right.
Overall capability
- Artificial Analysis Intelligence Index48.1#7 of 29
Max effort
- Epoch Capabilities Index156.8#7 of 16
- LiveBench81.6%#5 of 23
Xhigh effort
Coding
- Terminal-Bench 4.014.6%#13 of 13
Muse Code harness, xhigh effort
- Arena WebDev1,656#8 of 27
Max effort
Agents & professional work
- GDPval-AA1,684#6 of 18
Max effort
Reasoning
- FrontierMath (Tiers 1–3)74.4%#8 of 14
Xhigh effort
- MathArena46.6%#8 of 10
- SimpleBench81.8%#6 of 12
Knowledge & science
- Humanity's Last Exam (Diamond)25.4%#5 of 9
Multimodal
- Arena Vision1,290#3 of 15
Max effort
Human preference
- Arena Text1,494#5 of 24
Max effort
Reasoning effort trade-offs
The same model at different thinking budgets. More effort buys a higher intelligence score at a higher cost per task and a longer wait. Measured by Artificial Analysis.
| Effort | Score | Cost / task | First answer | Speed |
|---|---|---|---|---|
| Xhigh | 45.1 | $1.37 | 47s | 368 t/s |
| Max (headline score) | 48.1 | $1.60 | 64s | 209 t/s |
Specs & pricing
- Developer
- Meta
- Released
- Sep 2, 2026
- Availability
- Generally available
- API model ID
muse-spark-1.3- Weights
- Proprietary (API only)
- Reasoning
- Adjustable effort
- Accepts
- Text, Image, Video, Audio
- Produces
- Text
- Context window
- 1,048,576 tokens
- Input price
- $1.25 / 1M tokens
- Output price
- $4.25 / 1M tokens
- Cached input
- $0.15 / 1M tokens
Standard tier. A contributor tier at $0.10 input / $0.20 output per 1M tokens lets Meta train on prompts and completions.
Closest alternatives
Models from other labs nearest to Muse Spark 1.3 on Artificial Analysis Intelligence Index.
Grok 4.7
SpaceXAI
Intelligence 46.5 · $2 / $6
Compare side by sideMiMo-V2.6-Pro
Xiaomi
Intelligence 46.3 · $0.435 / $0.87
Compare side by sideQwen3.8-Max
Alibaba
Intelligence 45.4 · $2 / $6
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