Muse Spark 1.3
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.
Key facts
- Input price
- $1.25 / 1M tokens
- Output price
- $4.25 / 1M tokens
- Context window
- 1M tokens
- Max output
- 944K tokens
- Accepts
- Text, Images, Files, Video
- Returns
- Text
Example: 1,000 requests with 1,000 input and 500 output tokens each would cost about $3.38 (1M input tokens × $1.25 + 0.5M output tokens × $4.25). Estimate your own usage.
Prices are the provider’s own per-token rates with zero markup, from our price list as of Oct 18, 2026. If a call has extra provider charges (images, audio, web search, cached prompts), you pay the reported cost.
Call it from your code
curl https://api.tokenctr.com/v1/chat/completions \
-H "Authorization: Bearer $TOKENCENTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "meta/muse-spark-1.3", "messages": [{"role": "user", "content": "Hello!"}]}'Works with any OpenAI-compatible SDK: set the base URL to https://api.tokenctr.com/v1. Quickstart
Benchmarks
Artificial Analysis
- Intelligence index
- 48.1
- Coding index
- 75.8
- Agentic index
- 55.5
Design Arena
| Category | Rank | Elo | Win rate |
|---|---|---|---|
| Agents: Web apps | 2 | 1290 | 54.7% |
| Models: SVG | 2 | 1323 | 54% |
| Models: Websites | 2 | 1358 | 58.2% |
| Agents: Full-stack | 3 | 1312 | 60.8% |
| Models: UI components | 4 | 1351 | 57.8% |
| Models: 3D | 5 | 1397 | 63.5% |
| Models: Code | 5 | 1355 | 57.3% |
| Models: Data visualization | 6 | 1344 | 58.1% |
| Agents: Godot game dev | 7 | 1241 | 45.8% |
| Models: Game dev | 8 | 1346 | 55.9% |
| Agents: Mobile apps | 10 | 1219 | 47.9% |
| Agents: Slides (python-pptx) | 10 | 1244 | 51.4% |
| Models: ASCII art | 13 | 1266 | 51.9% |
Source: Artificial Analysis indexes and Design Arena results as published in OpenRouter’s model data, fetched Oct 15, 2026. Higher is better. Not measured by TokenCenter. See all rankings.