The latest model, which was teased last week, matched or was competitive with leading models, such as Claude Opus 4.8, Gemini 3.1 Pro, and GPT 5.5, across several agentic AI, coding, and computer-use benchmarks, including SWE-bench Verified, Terminal-bench, BrowseComp, SpreadsheetBench, and OSWorld, Meta wrote in a blog post.
Muse Spark 1.1, which is currently in public preview and available via the Meta Model API, will cost $1.25 per million input tokens and $4.25 per million output tokens, the company noted.
By comparison, OpenAI charges $5 per million input tokens and $30 per million output tokens for GPT-5.5, while Anthropic charges $5 and $25, respectively, for Claude Opus 4.8. Google’s Gemini 3.1 Pro, on the other hand, is priced at $2 per million input tokens and $12 per million output tokens.
