Voice Cloning is now live via the xAI API! Create a custom voice in less than 2 minutes or select from our library of 80+ voices across 28 languages to personalize your voice agents, audiobooks, video game characters, and more.

Grok Voice Agents can perform tasks and look up information on the fly. Developers can easily integrate their own custom tools or tap into xAI's real-time search capabilities across X and the web.

Grok Voice Agents are the fastest, most intelligent voice agents on the market. The Grok Voice Agent API ranks #1# on Big Bench Audio, the leading audio reasoning benchmark. Grok is nearly 5 times faster than the closest competitor. @ArtificialAnlys

New course: Add voice to your AI agents and applications, built with @VocalBridge (disclosure: an AI Fund portfolio company) and taught by its CEO @_ashwyn. Voice applications historically required making a hard tradeoff: using fast voice-to-voice models that sacrifice reliability, or accurate speech-to-text pipelines that add latency. This course teaches you how to build voice agents that are both reliable and fast. You'll build three types of voice-enabled applications: a voice-interactive game where voice commands and mouse clicks work together over a single channel, an agent that gains a voice in about 10 lines of code without touching its prompts or tools, and an agent that places outbound phone calls using a make_phone_call function. Skills you'll gain: - Add a voice layer to an existing agent without rewriting your prompts, RAG pipeline, or tools - Give an agent the ability to place outbound calls and stream transcripts back live - Set up voice evaluation to score calls, catch regressions, and improve quality before deployment Join and add voice to your agents without overhauling your architecture:

.@maitreya_wagh and @xan_ps watched voice AI demos work perfectly in labs, then break in Mumbai call centers: customers code-switching mid-sentence, connections dropping, reality exposing every edge case. They'd seen this pattern before—Maitreya shipping products at Datamuni and Bain, and Prateek scaling infrastructure at Zomato and Atlassian. So they built @bolna_dev to work in the complexity of enterprise environments. India runs on a billion business calls daily. Most are still manual, expensive, fragile. Bolna built an orchestration layer that lets enterprises deploy multilingual voice agents at scale, without vendor lock-in or brittle systems. Their platform already handles thousands of concurrent calls. Customer service reps now manage escalations while Bolna handles routine queries in Hindi, English, and Hinglish without dropping connections. We're backing Maitreya, Prateek, and the Bolna team from day one. More from @neerajarora, @yuris, @AkarshS27, and @SiddhantD06:

Introducing GPT-Realtime-2 in the API: our most intelligent voice model yet, bringing GPT-5-class reasoning to voice agents. Voice agents are now real-time collaborators that can listen, reason, and solve complex problems as conversations unfold. Now available in the API alongside streaming models GPT-Realtime-Translate and GPT-Realtime-Whisper — a new set of audio capabilities for the next generation of voice interfaces.

Too many people still have no idea how powerful Grok actually is. It’s not “just another chatbot.” Real-time knowledge from X, elite coding + agentic tools, stunning image & video generation with Imagine, voice agents you can build in minutes, deep research, document creation, Excel integration… and a personality that actually feels alive. Most people are still using AIs that feel restricted and outdated without realizing what’s already available. If you haven’t properly tried Grok yet — you’re missing out.

Agents, agents, agents at Ship London 🇬🇧 ▪︎ Video agents with @GoogleDeepMind ▪︎ Real-time voice agents with @ElevenLabs ▪︎ Agents in production with @Telegraph, @currys, @AKQA, and @easyJet June 17 at Magazine. Get your ticket.

We've raised a $50M Series B to keep making everyday calls extraordinary. After 1,000,000,000 calls and 10x enterprise ARR growth, Vapi's platform approach to voice agents is becoming the standard for businesses building human interfaces.