Muse Spark 1.2 Contributor vs GPT-5.6 Sol: side-by-side summary

Muse Spark 1.2 Contributor and GPT-5.6 Sol 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.

GPT-5.6 Sol, from OpenAI, has a 1,050,000-token context window and is priced at $2/M tokens input, $10/M tokens output on OpenRouter.

Context window

• Muse Spark 1.2 Contributor: 1,048,576 tokens
• GPT-5.6 Sol: 1,050,000 tokens

Price

• Muse Spark 1.2 Contributor: $0.10/M tokens input, $0.20/M tokens output
• GPT-5.6 Sol: $2/M tokens input, $10/M tokens output

Provided by

• Muse Spark 1.2 Contributor: Meta
• GPT-5.6 Sol: OpenAI

• Muse Spark 1.2 Contributor model details, providers and pricing
• GPT-5.6 Sol model details, providers and pricing