xAI Ships Grok Voice Transcribe 2.0 with Double Accuracy; Meta Opens Muse Connectors to Developers

xAI released Grok Voice Transcribe 2.0 on September 18, advancing speech-to-text accuracy by 50% while holding pricing flat, as Meta simultaneously opened its Muse AI agent to third-party developers through a new connectors API. The dual announcements underscore intensifying competition in AI agents and foundation models, with both companies racing to embed their technologies into real-world applications.