ME News reports that on April 18 (UTC+8), xAI officially launched two standalone audio APIs: Grok Speech-to-Text (STT) and Grok Text-to-Speech (TTS). Grok STT delivers highly accurate, low-latency transcription services, supporting both REST API for batch processing and WebSocket API for real-time streaming transcription, along with word-level timestamps, speaker diarization, multi-channel support, and intelligent inverse text normalization. According to the article, benchmark tests across domains such as phone calls, meetings, and video/podcasts show its word error rate outperforming leading commercial models like ElevenLabs, Deepgram, and AssemblyAI. The service supports over 25 languages, priced at $0.10 per hour for batch processing and $0.20 per hour for streaming. Grok TTS generates fast, natural, and expressive speech with fine-grained control via simple voice tags, priced at $4.20 per one million characters. Both APIs are built on the same technology stack powering Grok Voice, Tesla vehicles, and Starlink customer support. (Source: InFoQ)
xAI Launches Grok STT and TTS APIs with Competitive Pricing and Multilingual Support
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xAI has launched Grok STT and TTS APIs with competitive pricing and multilingual support. Grok STT delivers high-accuracy transcription with batch and streaming options, outperforming major competitors in word error rates. It supports over 25 languages at $0.10 per hour for batch and $0.20 for streaming. Grok TTS offers expressive speech at $4.20 per 1 million characters. The APIs power Grok Voice, Tesla, and Starlink. With new token listings on the rise, developers and traders are closely monitoring interest rate news for market shifts.
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