[Meta down 1% pre-market, delays release of Muse Spark AI model API] According to Golden Finance, on June 4, Meta Platforms (META.US) was down 1% pre-market, trading at $616.72. Reports indicate that Meta Platforms has delayed the release of the Muse Spark AI model API due to vulnerabilities and infrastructure issues, as cited by sources. Meta Platforms stated that it plans to release the API for its latest AI model in June.