Overview
Muse Spark 1.3 vs Union Alpha: side-by-side summary
Muse Spark 1.3 and Union Alpha are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Muse Spark 1.3, from Meta, has a 1,048,576-token context window and is priced at $1.25/M tokens input, $4.25/M tokens output on OpenRouter.
Union Alpha, from Stealth, has a 262,144-token context window and is free to use on OpenRouter.
- Context window
- Muse Spark 1.3: 1,048,576 tokens
- Union Alpha: 262,144 tokens
- Price
- Muse Spark 1.3: $1.25/M tokens input, $4.25/M tokens output
- Union Alpha: Free
- Provided by
- Muse Spark 1.3: Meta
- Union Alpha: Stealth