Meet Grok Voice 3.0: SpaceXAI Voice Agent Model Ranks #1 on Artificial Analysis
SpaceXAI just released Grok Voice 3.0. Grok Voice 3.0 is a SpaceXAI speech-to-speech model that listens, reasons, calls tools and speaks. It now ranks first on the Artificial Analysis Speech-to-Speech Index with a score of 86.9.
SpaceXAI has launched Grok Voice 3.0, a speech-to-speech model that ranks first on the Artificial Analysis Speech-to-Speech Index with a score of 86.9, showcasing significant advancements in real-time voice processing and reasoning.
What happened
SpaceXAI released Grok Voice 3.0, a speech-to-speech model that excels in real-time voice processing, reasoning, and tool integration. It ranks first on the Artificial Analysis Speech-to-Speech Index with a score of 86.9, surpassing other models like GPT-Live-1 and Gemini 3.8 Live Extended Thinking. The model is available via the hosted Voice Agent API and maintains a cost of $0.08 per minute.
Why it matters
Grok Voice 3.0 is significant for AI developers and voice agent creators due to its high performance in speech-to-speech tasks, improved latency, and competitive pricing. It offers a robust solution for real-time voice processing and integration with tools, making it a valuable option for businesses and developers working on voice-based applications.
- Grok Voice 3.0 ranks #1 on the Artificial Analysis Speech-to-Speech Index with a score of 86.9.
- It offers 40% lower latency than GPT-Live-1 (Astra, medium) with a time to first audio of 0.81 seconds.
- τ-Voice performance improved to 71.6%, though GPT-Live-1 still leads in this metric.
- The model remains API-only with no open weights or local variants.
- It maintains a cost of $0.08 per minute and is compatible with the OpenAI Realtime API.
The bigger picture
Grok Voice 3.0 has the potential to enhance real-time voice applications, improve user experience in voice agents, and provide a competitive edge in the speech-to-speech market. Its performance and cost-effectiveness make it an attractive option for developers and businesses.
Grok Voice 3.0 represents a significant advancement in speech-to-speech technology, offering high performance, improved latency, and competitive pricing. It is a strong contender in the voice agent market and provides developers with a robust solution for real-time voice processing and integration.
Technical details
- Runs on SpaceXAI’s hosted Voice Agent API only, with no open weights or local variants.
- Supports real-time voice processing, reasoning, and tool integration via the /v1/realtime WebSocket endpoint.
- Includes features like server-side voice activity detection, barge-in handling, and support for multiple audio formats.
- Offers 28 built-in voices, custom voice cloning, and support for 20 locales with automatic language detection.
- Complies with SOC 2 Type II, HIPAA, and GDPR standards, with no audio storage or training usage.
FAQ
What is Grok Voice 3.0?
Grok Voice 3.0 is a speech-to-speech model developed by SpaceXAI that listens, reasons, calls tools, and speaks. It is available via the hosted Voice Agent API and ranks first on the Artificial Analysis Speech-to-Speech Index.
How does Grok Voice 3.0 perform compared to other models?
Grok Voice 3.0 scores 86.9 on the AA Speech-to-Speech Index, ranking first. It outperforms previous versions and other models in several benchmarks, including Big Bench Audio and Full Duplex Bench.
What are the key features of Grok Voice 3.0?
Key features include real-time voice processing, reasoning, tool integration, support for multiple audio formats, 28 built-in voices, and compliance with SOC 2, HIPAA, and GDPR standards.
What is the cost of using Grok Voice 3.0?
Grok Voice 3.0 costs $0.08 per minute, with no changes from Grok Voice 2.0. It is available via the hosted Voice Agent API only.
How can developers deploy Grok Voice 3.0?
Developers can deploy Grok Voice 3.0 via the hosted Voice Agent API, which is compatible with the OpenAI Realtime API. It supports WebSocket, WebRTC, and SIP transports for various use cases.
This summary and analysis were generated with AI from the original article and may contain errors. Read the original for the full story.
Read the full story
Originally published by MarkTechPost on Oct 15, 2026.
Comments
Sign in to join the discussion.