Cartesia (@cartesia) / X

Cartesia

505 posts

Cartesia

@cartesia

Architecting AI that learns and interacts like humans

San Francisco, CA

cartesia.ai

Joined September 2023

Following

14.2K

Followers

Pinned
Cartesia
@cartesia
Jun 15
Two new models just dropped 👀 Sonic-3.5 and Ink-2 are the #1 streaming models for text to speech and speech to text
Karan Goel
@krandiash
Jun 15
We released Sonic-3.5 and Ink-2, the #1 streaming models for text to speech and speech to text you can use in your voice agents today. New architectures enable new frontiers for speed and quality. We're now the only provider to have #1 models for both speaking and listening.
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Cartesia
@cartesia
Jun 17
Sonic-3.5 is also the #1 streaming TTS model on @voicearena_ai for notable languages including English🇺🇸, Hindi 🇮🇳, Portuguese 🇧🇷
Voice Arena
@voicearena_ai
Jun 17
Cartesia Sonic 3.5 is the #1 streaming TTS model on Voice Arena US English Leaderboard. In the overall leaderboard (streaming + non-streaming) it jumped from rank #9 → #2, moving ahead of Grok TTS, ElevenLabs v3 & OpenAI's gpt-4o-mini-tts. Sonic-3.5 is the latest TTS model
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Cartesia reposted
bolna
@bolna_dev
May 29
Announcing the Bolna × Cartesia VOC-A-THON! Calling the most cracked builders in Voice AI. Come ship voice agents powered by Sonic 3.5, Cartesia's most natural and expressive TTS model yet. - Build with Sonic 3.5, Cartesia's newest TTS model - @bolna_dev and @cartesia teams in
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Cartesia
@cartesia
May 28
Cartesia Ink-2 debuts as #1 for accuracy on the brand-new streaming speech-to-text leaderboard from @ArtificialAnlys! We designed Ink-2 from the ground up for voice agents - with low latency, eager transcripts, and semantic endpointing.
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Cartesia
@cartesia
May 28
A great speech-to-text model for voice agents first and foremost needs to have high accuracy in production settings - this means noisy environments and conventionally difficult audio like silences, short transcripts, phone numbers, and UUIDs. For the conversation to be smooth,
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Cartesia
@cartesia
May 28
We've built Ink-2 to excel on all of these axes in production. Give it a try on our website
Cartesia \ Ink
From cartesia.ai
1.8K
Cartesia
@cartesia
May 26
Cartesia is excited to be the Voice that powers @avaturn_me's new Open Weights AVTR-1 avatar models. Check out the links, repo and docs below 👇
Avaturn
@avaturn_me
May 26
🚨 AVTR-1 New Model is OPEN WEIGHTS . Duplex Native , #1 on benchmarks. Here’s what being released. Links in comments - Model + Paper now on HF - Full Github repo to run it really fast Run it anywhere as low as $0. Comment, share, star on GH to get the word out
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Cartesia
@cartesia
May 22
Sonic 3.5 is now the #1 text to speech model on the @ArtificialAnlys leaderboard! You no longer have to trade off quality and latency - Sonic 3.5 also has the fastest time to first audio at 82ms end to end. See full benchmark results 👇
Artificial Analysis
@ArtificialAnlys
May 22
Cartesia’s Sonic-3.5 takes the #1 spot on the Artificial Analysis Speech Arena Leaderboard, surpassing Inworld Realtime TTS 1.5 Max and Google’s Gemini 3.1 Flash TTS Sonic-3.5 is the latest TTS model from @cartesia . It supports 42 languages, including 9 Indian languages, with
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Cartesia
@cartesia
May 21
NYC happy hour with @awscloud Thurs, June 4 · 5:30pm · NY tech week RSVP in comments 👇
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Cartesia
@cartesia
May 21
RSVP:
Voice AI After Hours: Cartesia x AWS Happy Hour - #NYTechWeek | Partiful
From partiful.com
1.2K
Cartesia reposted
LiveKit
@livekit
May 7
Voice cloning is now available on LiveKit Inference. We’re launching with @inworld_ai and @cartesia. Clone a voice once and use it across multiple TTS providers, with automatic fallback to the same voice if a provider fails mid-call. Free to create and available on all paid
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Cartesia reposted
Timothy Luong (Chongz)
@chongz
May 7
Every day I curse @krandiash for tainting us, removing @cartesia’s purity as a neo lab in the pursuit of “revenue”
Deedy
@deedydas
May 7
The Ultimate List of Artificial Intelligence "Neolabs": May 2026. A Neolab is a pre-revenue scale startup working on long-term AI breakthroughs, usually with a $1B+ valuation. There are now 63 of them!
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Cartesia
@cartesia
Mar 31
Nobody in voice AI is talking about TCPA compliance. Enterprise buyers ask about it first. @2xSolutions CEO Kevin DeMeritt processed $4B in business at Lear Capital - and built 2X Solutions around the TCPA compliance reality that most platforms ignore. Switching to Cartesia’s
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Cartesia
@cartesia
Mar 31
Read more:
Cartesia \ 2X Solutions Builds Secure, TCPA-Compliant Voice AI with Cartesia
From cartesia.ai
1.3K
Cartesia
@cartesia
Mar 26
“There were moments where the Cartesia team was telling us things that were happening with our product before we even knew it,” said @fundamentoAI Co-Founder Vickram Saigal. “That gave us a lot of trust – we’ve got the right partners.” @fundamentoAI runs 20M+ monthly outbound
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Cartesia
@cartesia
Mar 26
Full story →
Cartesia \ Fundamento Runs Millions of Financial Services Calls on Cartesia
From cartesia.ai
911
Cartesia
@cartesia
Mar 18
Mamba-3 is out! 🐍 SSMs marked a major advance for the efficiency of modern LLMs. Mamba-3 takes the next step, shaping SSMs for a world where AI workloads are increasingly dominated by inference. Read about it on the Cartesia blog:
Mamba-3: An Inference-First State Space Model | Cartesia Blog
From inside.cartesia.ai
73K
Cartesia
@cartesia
Mar 13
The world’s leading AI infrastructure platforms are converging on the same voice model 🔥 Excited to announce that Cartesia is now a dedicated model partner on @togethercompute's Voice Platform for the 450K+ teams and developers building on Together.
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Cartesia
@cartesia
Mar 13
Read more:
Cartesia \ Together AI Chooses Cartesia as Dedicated Model Partner for Enterprise Voice AI
From cartesia.ai
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