Compare Muse Spark Open from Meta and Kimi K3.1 Pro from moonshotai on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.
| Attribute | Muse Spark Open | Kimi K3.1 Pro |
|---|---|---|
| Input price | $1.25/M tokens | $0.3382/M tokens |
| Output price | $4.25/M tokens | $7.958/M tokens |
| Context window | 1,048,576 tokens | 1,048,576 tokens |
| Intelligence Index | 24.9 | 46.5 |
| Coding Index | Not available | Not available |
| Agentic Index | Not available | Not available |
| Latency (p50) | 0.95 s | 1.70 s |
| Throughput (p50) | 195.0 tok/s | 73.0 tok/s |
| Provided by | Meta | moonshotai |
| Model page | Muse Spark Open model details, providers and pricing | Kimi K3.1 Pro model details, providers and pricing |
Benchmark data updated
Muse Spark Open and Kimi K3.1 Pro trade off on price: Muse Spark Open costs $1.25/M tokens input and $4.25/M tokens output, while Kimi K3.1 Pro costs $0.3382/M tokens input and $7.958/M tokens output, so Kimi K3.1 Pro is cheaper for input tokens and Muse Spark Open is cheaper for output tokens.
Muse Spark Open and Kimi K3.1 Pro have the same context window of 1,048,576 tokens.
Muse Spark Open is faster on OpenRouter, generating a median 195.0 tokens per second compared with 73.0 tokens per second for Kimi K3.1 Pro.