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Muse Spark 1.2 Contributor vs Union Alpha

Compare Muse Spark 1.2 Contributor from Meta and Union Alpha from Stealth on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.

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Favicon for meta
Muse Spark 1.2 Contributor
Favicon for stealth
Union Alpha
Favicon for meta
Muse Spark 1.2 Contributor
Favicon for stealth
Union Alpha

Overview

Muse Spark 1.2 Contributor
Author
Meta
Union Alpha
Author
Stealth
Muse Spark 1.2 Contributor
Context length
1.05Mtokens
Union Alpha
Context length
262Ktokens
Muse Spark 1.2 Contributor
Reasoning
Union Alpha
Reasoning
Muse Spark 1.2 Contributor
Input modalities
Union Alpha
Input modalities
Muse Spark 1.2 Contributor
Output modalities
Union Alpha
Output modalities

Muse Spark 1.2 Contributor vs Union Alpha: side-by-side summary

Muse Spark 1.2 Contributor 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 1.2 Contributor, from Meta, has a 1,048,576-token context window and is priced at $0.10/M tokens input, $0.20/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 1.2 Contributor: 1,048,576 tokens
  • Union Alpha: 262,144 tokens
Price
  • Muse Spark 1.2 Contributor: $0.10/M tokens input, $0.20/M tokens output
  • Union Alpha: Free
Provided by
  • Muse Spark 1.2 Contributor: Meta
  • Union Alpha: Stealth
  • model details, providers and pricing
Muse Spark 1.2 Contributor
model details, providers and pricing
Union Alpha