ME News reports that xAI has officially launched two standalone audio APIs: Grok STT and Grok TTS. Grok STT features high accuracy, low latency, supports REST batch processing, WebSocket real-time transcription, with word-level timestamps, speaker separation, multi-channel support, and intelligent reverse text normalization, covering over 25 languages; batch pricing is $0.10 per hour, streaming is $0.20 per hour, with word error rates better than many competitors. Grok TTS offers fast, natural, and fine-grained controllable speech through tags, priced at $4.20 per million characters. Both are based on the same technology stack, used by Grok Voice, Tesla, and Starlink.

MeNews

2026-05-25 17:22:33

Abstract generation in progress

ME News Report, April 18 (UTC+8), xAI recently announced the official launch of two standalone audio APIs: Grok Speech-to-Text (STT) and Grok Text-to-Speech (TTS). Grok STT offers high-accuracy, low-latency transcription services, supporting batch processing via REST API and real-time streaming via WebSocket API, with features including word-level timestamps, speaker separation, multi-channel support, and intelligent reverse text normalization. The article mentions that in benchmark tests across multiple fields such as phone calls, meetings, videos/podcasts, its word error rate outperforms mainstream 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 can generate fast, natural, and expressive speech, supporting fine-grained control through simple voice tags, priced at $4.20 per 1 million characters. Both APIs are built on the same technology stack that powers Grok Voice, Tesla vehicle support, and Starlink customer support. (Source: InFoQ)

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Mint-ColoredCalmness

· 6h ago

Is Tesla's in-car voice system going to be upgraded? It’s interesting that Starlink can also be used.

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SummerNightColdWallet

· 6h ago

What is reverse text normalization, a cutting-edge technology, an automatic process of converting numbers to words?

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NekoValidator

· 6h ago

$0.1/hour bulk price, 25+ languages, this wave will push Whisper to the limit

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Cream-ColoredCross-ChainBridge

· 7h ago

REST Batch + WebSocket Streaming Dual Mode, Maximize Developer Friendliness

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GateUser-deff9ed8

· 7h ago

xAI is now selling APIs, Elon Musk's ecosystem closed-loop +1

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