xAI launches Grok Speech-to-Text and Text-to-Speech APIs with competitive pricing

xAI released its Grok Speech-to-Text and Text-to-Speech APIs offering advanced audio processing capabilities. The STT API provides accurate, low-latency transcription with word-level timestamps and speaker diarization across 25+ languages at $0.10-0.20 per hour. The TTS API delivers natural speech synthesis with voice tag controls at $4.20 per million characters.