xAI released two distinct products on April 17: Grok 4.3 beta, available exclusively to SuperGrok Heavy subscribers at $300/month, adds native PDF generation, PowerPoint slide creation, spreadsheet output, and video input over the prior Grok 4.20, along with a 2-million-token context window and expanded Grok Computer desktop automation access. Separately, xAI launched standalone Speech-to-Text and Text-to-Speech APIs, pricing STT at $0.10/hour batch and $0.20/hour streaming across 25 languages with speaker diarization, and TTS at $4.20 per million characters with five named voices and prosody control tags—rates positioned to undercut ElevenLabs, Deepgram, and AssemblyAI. The audio APIs draw on the same technology powering Grok Voice, Tesla in-car assistants, and Starlink customer support. A persistent lack of memory across sessions remains a noted gap for the heavy-tier model.