Meta · Llama · Crypto Briefing
Meta opens weights for Muse Glimmer and publishes Muse Spark 1.2 release
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Meta's latest AI coding models signal both an open-weight gesture and a deeper push into API-driven monetization.
Key facts
- Muse Spark 1.2 is available exclusively through the Meta Model API, with pricing starting at $1.25 per million input tokens
- Meta launched Muse Spark 1.2 on August 5, 2026, a flagship coding model built for complex software engineering tasks
- The predecessor to the current release, Muse Spark 1.1, launched on July 9, 2026, and established the initial API access and multimodal capabilities that Spark 1.2 now builds upon
- Muse Spark 1.2 is purpose-built for debugging sprawling codebases, validating changes across thousands of files, and handling multi-step reasoning tasks
Summary
Meta launched Muse Spark 1.2 on August 5, 2026, a flagship coding model built for complex software engineering tasks. Muse Spark 1.2 is purpose-built for debugging sprawling codebases, validating changes across thousands of files, and handling multi-step reasoning tasks. Meta is also launching Muse Code in beta alongside the model refresh. Muse Spark 1.2 is available exclusively through the Meta Model API, with pricing starting at $1.25 per million input tokens.