Cartesia 发布 Sonic-3.6，登顶两大语音评测榜
Cartesia Ships Sonic-3.6: A Streaming TTS Model That Now Leads Both Artificial Analysis Speech Arenas
Cartesia has released Sonic-3.6, the newest version of its real-time text-to-speech model. It arrives roughly three months after Sonic-3.5. The new change is naturalness, and this one is independently checkable. Sonic 3.6 now holds #1 on both Artificial Analysis speech leaderboards — 1,283 Elo on the Provider Voice board and 1,123 on the Controlled Voice board. The second result matters more. That board clones every model onto the same eight reference voices, which isolates the synthesis engine from the voice catalog. Sonic-3.6 leads it, with Sonic-3.5 second and ElevenLabs Eleven v3 third. The model runs on state space models rather than transformers, and Cartesia states sub-90ms time-to-first-audio. It is available in beta.
Cartesia 发布了 Sonic-3.6，这是其实时文本转语音模型的最新版本。距离 Sonic-3.5 发布约三个月。新变化在于自然度，这一点可以独立验证。Sonic 3.6 目前在 Artificial Analysis 的两个语音排行榜上均位列第一——在 Provider Voice 排行榜上获得 1,283 Elo，在 Controlled Voice 排行榜上获得 1,123。第二个结果更为重要。该排行榜将每个模型克隆到相同的八个参考语音上，从而将合成引擎与语音库隔离。Sonic-3.6 领先，Sonic-3.5 位居第二，ElevenLabs Eleven v3 位列第三。该模型基于状态空间模型而非 Transformer 架构，Cartesia 声称其首次音频输出时间低于 90 毫秒。目前处于测试阶段。
Is it deployable?
它可以部署吗？
YES, it is available in beta and as a hosted API. Not as self-hosted weights.
可以，它目前处于测试阶段，并作为托管 API 提供。但不提供自托管权重。
Sonic is a closed, commercial model. There are no open weights and no Hugging Face repo. You rent it.
Sonic 是一个封闭的商业模型。没有开放权重，也没有 Hugging Face 仓库。你只能租用。
- Company level: Solo developers and startups (Free/Pro $5 tiers), scaleups running contact centers (Startup $49 / Scale $299), and regulated enterprises needing DPAs, BAAs, and SSO.
- Industries: Financial services, healthcare, retail and e-commerce, logistics, recruiting, SaaS support, consumer companion apps, media localization
- Applications: Inbound support agents, outbound qualification calls, IVR replacement, appointment reminders, sales-training simulators, audio localization, in-product voice UI
- 公司层面：独立开发者和初创公司（免费/专业版 $5 档位）、运营联络中心的成长型企业（初创版 $49 / 规模版 $299），以及需要 DPA、BAA 和 SSO 的受监管企业。
- 行业：金融服务、医疗保健、零售和电子商务、物流、招聘、SaaS 支持、消费者伴侣应用、媒体本地化
- 应用场景：入站支持代理、外呼资格确认电话、IVR 替代、预约提醒、销售培训模拟器、音频本地化、产品内语音界面
The Architecture
架构
Sonic runs on state space models rather than transformers. Cartesia’s launch page frames the usual tradeoffs — speed versus naturalness, accuracy versus cost — as architectural, not inevitable.
Sonic 基于状态空间模型而非 Transformer 架构。Cartesia 的发布页面将通常的权衡——速度与自然度、准确性与成本——视为架构性的，而非不可避免的。
The practical output is time-to-first-audio. Cartesia states sub-90ms TTS latency, and 100ms transcript latency for its Ink-2 speech-to-text model. Both are vendor-stated model latency, not measured end-to-end round trips.
实际输出是首次音频时间。Cartesia 声称 TTS 延迟低于 90 毫秒，其 Ink-2 语音转文本模型的转录延迟为 100 毫秒。两者均为供应商声明的模型延迟，而非实测的端到端往返时间。
Interactive explainer
交互式说明
Features that matter in production
生产中重要的功能
Sonic exposes controls built for agent transcripts rather than narration:
Sonic 提供了专为代理转录而非叙述设计的控制功能：
- Inline expression tags. Non-verbal expressions like [laughter] go directly in the transcript.
- Instant voice cloning from about 10 seconds of audio.
- Custom pronunciation dictionaries, including IPA overrides such as <<s|ə|ˈ|p|i|n|ə>> for subpoena.
- Speed, volume, and emotion parameters exposed through the API and integrations like the LiveKit Agents plugin.
- Native alphanumerics. Order numbers, phone numbers, and confirmation codes read correctly without preprocessing.
- 内联表达标签。非语言表达如 [笑声] 可直接放入转录文本中。
- 从约 10 秒音频即可实现即时语音克隆。
- 自定义发音词典，包括 IPA 覆盖，例如 <<s|ə|ˈ|p|i|n|ə>> 用于 subpoena。
- 通过 API 和 LiveKit Agents 插件等集成暴露速度、音量和情感参数。
- 原生字母数字支持。订单号、电话号码和确认码无需预处理即可正确读取。
Cartesia’s launch demos show English with natural pauses and filler words, plus Hinglish code-switching between Hindi and English.
Cartesia的发布演示展示了带有自然停顿和填充词的英语，以及印地语和英语之间的Hinglish语码转换。
Pricing reality
定价现实
Artificial Analysis normalizes Sonic 3.6 at $49.00 per 1M characters. That is half of ElevenLabs Eleven v3 at $100.00, and well above Speechify Simba 3.2 at $10.00 for a 1,240 Elo.
Artificial Analysis将Sonic 3.6标准化为每100万字符49.00美元。这比ElevenLabs Eleven v3的100.00美元便宜一半，但远高于Speechify Simba 3.2的10.00美元（Elo为1240）。
Cartesia sells credits, not characters. Scale at $299 per month includes roughly 10,667 TTS minutes and 15 concurrent requests. Line voice agents bill separately at $0.06 per minute.
Cartesia销售积分而非字符。Scale套餐每月299美元，包含约10,667分钟的TTS时间和15个并发请求。Line语音代理按每分钟0.06美元单独计费。
Key Takeaways
关键要点
- Sonic-3.6 is #1 on both Artificial Analysis speech arenas — 1,283 Elo Provider Voice, 1,123 Controlled Voice.
- Winning the Controlled board means the engine improved, not just the voice catalog.
- It is beta on Cartesia’s API only; docs still list Sonic 3.5 as stable, and partners carry 3.5.
- Deployable as a hosted API, not self-hosted weights; commercial use starts at the $5 Pro tier.
- Latency claims (sub-90ms TTFA) are vendor-stated model latency, so benchmark your own round trip.
- Sonic-3.6在Artificial Analysis的两个语音竞技场中均排名第一——提供商语音1283 Elo，受控语音1123 Elo。
- 赢得受控排行榜意味着引擎本身得到了改进，而不仅仅是语音目录的扩充。
- 它仅在Cartesia的API上处于测试阶段；文档仍将Sonic 3.5列为稳定版本，合作伙伴也使用3.5版本。
- 可作为托管API部署，而非自托管权重；商业使用从5美元的专业版开始。
- 延迟声明（低于90毫秒的TTFA）是供应商声明的模型延迟，因此请自行基准测试您的往返时间。
Check out the Project Page-Cartesia Sonic, Cartesia launch page, Cartesia pricing, Cartesia docs, Artificial Analysis Speech Arena and @cartesia on X. All figures verified August 18, 2026.. Also, feel free to follow us on Twitter and don’t forget to join our 150k+ML SubReddit and Subscribe to our Newsletter. Wait! are you on telegram? now you can join us on telegram as well.
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