Meta
Muse Spark 1.3
Muse Spark 1.3 is a multimodal reasoning model from Meta for long-running agentic, multi-agent, and coding workflows.
At a glance
- Input / 1M
- $1.25
- Output / 1M
- $4.25
- Context
- 1.05M
- Max output
- 944K
- Intelligence
- 48.1
- Released
- Sep 2026
Pricing
Muse Spark 1.3 API pricing
Per-token rates, plus what common tasks actually cost.
| Input tokensPer 1M tokens | $1.25 |
|---|---|
| Output tokensPer 1M tokens | $4.25 |
| Cached input (read)Per 1M tokens | $0.15 |
| Cache writePer 1M tokens | Not available |
| Web searchPer request | $0.0025 |
Chat message
2K in, 500 out
$4.63
per 1,000 requests
Coding task
30K in, 4K out
$54.50
per 1,000 requests
Long document summary
150K in, 2K out
$196
per 1,000 requests
Benchmarks
Muse Spark 1.3 benchmark scores
Independent scores from Artificial Analysis. Higher is better.
Intelligence index
48.1
Coding index
75.8
Agentic index
55.5
Specs
Context window and capabilities
What it can read, what it can write, and which API features it supports.
- Context window
- 1.05M tokens
- Max output
- 944K tokens
- Input types
- File, Image, Text, Video
- Output types
- Text
- Reasoning effort
- Max, Extra high, High, Medium, Low, Minimal
- Release date
- September 2, 2026
- Tool calling
- Structured outputs
- JSON mode
- Reasoning
- Temperature
- Stop sequences
- Deterministic seed
- Verbosity control
Compare
Muse Spark 1.3 vs other models
See how Muse Spark 1.3 stacks up head to head on price, benchmarks, and features.
Muse Spark 1.3 vs Claude Opus 5.5
Meta vs Anthropic
See comparisonMuse Spark 1.3 vs Claude Sonnet 5.5
Meta vs Anthropic
See comparisonMuse Spark 1.3 vs Claude Fable 5.1
Meta vs Anthropic
See comparison
Muse Spark 1.3 vs GPT-6 Astra
Meta vs OpenAI
See comparisonMuse Spark 1.3 vs GPT-6.1 Sol
Meta vs OpenAI
See comparisonMuse Spark 1.3 vs Claude Opus 5
Meta vs Anthropic
See comparisonMore Muse Spark 1.3 comparisons
- Muse Spark 1.3 vs Claude Fable 5
- Muse Spark 1.3 vs GPT-6 Sol
- Muse Spark 1.3 vs GPT-5.6 Sol
- Muse Spark 1.3 vs Grok 4.7
- Muse Spark 1.3 vs MiMo-V2.6-Pro
- Muse Spark 1.3 vs Qwen3.8 Max (0902)
- Muse Spark 1.3 vs GLM 5.3
- Muse Spark 1.3 vs Grok 4.6
- Muse Spark 1.3 vs Gemini 3.8 Flash
- Muse Spark 1.3 vs DeepSeek V4.1 Flash
Alternatives
Muse Spark 1.3 alternatives
Similar models worth considering, and where each one has the edge.
OpenAI
GPT-6.1 Sol
OpenAI
GPT-6 Sol
OpenAI
GPT-5.6 Sol
Want to learn about other models? Browse all models
FAQ
Frequently asked questions
How much does Muse Spark 1.3 cost?
Muse Spark 1.3 costs $1.25 per 1M input tokens and $4.25 per 1M output tokens through the API. A typical chat message costs about $4.63 per 1,000 messages.
What is the context window of Muse Spark 1.3?
Muse Spark 1.3 accepts up to 1.05M tokens of input and can write up to 944K tokens in a single response.
What is the best alternative to Muse Spark 1.3?
GPT-6.1 Sol from OpenAI is a strong alternative. It offers: higher intelligence score, larger 1.05m context, newer release.
Can I use Muse Spark 1.3 alongside other models?
Yes. Shortcut Chat sends one prompt to Muse Spark 1.3 and any other models you pick at the same time, so you can compare answers side by side.
Try Muse Spark 1.3 next to every other model.
Use Muse Spark 1.3 alongside all the other models. Use one at a time, or multiple together. Get the best answer from every AI.