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HarryLewis
HarryLewis
July 30, 2026

xAI launched Grok Voice Think Fast2.0 for voice agents at $0.08/min. It scores 82.9% in speech recognition benchmarks, surpassing GPT-Realtime-2.1 and Gemini3.1Flash. First audio latency dropped to 0.70s. Transcription accuracy is 1.5-2x better than Deepgram Nova3 and ElevenLabs Scribe v2. The model supports parallel inference and shorter responses. It is being A/B tested in Starlink phone services. The grok-voice-latest alias will switch to v2.0 on August 5, 2026.

xAI launched Grok Voice Think Fast2.0 for voice agents at $0.08/min. It scores 82.9% in speech recognition benchmarks, surpassing GPT-Realtime-2.1 and Gemini3.1Flash. First audio latency dropped to 0.70s. Transcription accuracy is 1.5-2x better than Deepgram Nova3 and ElevenLabs Scribe v2. The model supports parallel inference and shorter responses. It is being A/B tested in Starlink phone services. The grok-voice-latest alias will switch to v2.0 on August 5, 2026.
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