SpaceXAI just launched Grok Voice Think Fast 2.0 - its most capable speech-to-speech model yet The numbers are so impressive: • 82.9% overall Speech-to-Speech Quality Index • 97.2% on speech reasoning • 56.5% on agentic voice tasks • Just 0.70 seconds to first audio • Uses only 0.4× the reasoning tokens of Think Fast 1.0 Grok Voice Think Fast 2.0 now ranks ahead of GPT-Realtime-2.1 and Gemini 3.1 Flash on overall speech-to-speech benchmarks But the biggest improvement is real-world listening Across thousands of short phrases in 24 languages, it delivers 1.5–2× better transcription accuracy than Deepgram Nova 3 and ElevenLabs Scribe v2 In noisy environments and compressed phone calls, that advantage grows to around 10× It can also reason while speaking, allowing tool calls to begin before it even finishes its first sentence.....with no added latency Conversations now feel much more natural: • Shorter responses • One question at a time • Less filler • More fluid dialogue • Better guidance through complex tasks SpaceXAI has already deployed it on Starlink's phone line and saw significant increases in both sales conversion and customer support containment Grok Voice Think Fast 2.0 becomes the default grok-voice-latest model on August 5 Pricing: $0.08 per minute of audio Voice AI is rapidly evolving from scripted assistants into intelligent agents that can listen, reason, speak, and take action in real time