Best Voice Cloning APIs
Text-to-speech APIs that clone a voice from an audio sample, with instant and professional cloning for branded and personalized voices.
Our pick: ElevenLabs Text to Speech
ElevenLabs Text to Speech is a REST API delivering high-quality, human-like AI voices for use cases spanning voice agents, audiobook production, video narration, game character voiceovers, and real-time conversational AI, with support for over a dozen synthesis capabilities including streaming, voice cloning, and multilingual output. Pricing starts at $6/month for 30,000 characters on the Starter plan, with a free tier of 10,000 characters per month and self-serve signup requiring no sales call. The API holds SOC 2 Type 2, ISO 27001, HIPAA, GDPR, and PCI DSS certifications, and offers Python and Node.js SDKs plus an MCP server. Notable customers include the Washington Post, HarperCollins, ESPN, and NVIDIA.
Best for: Prototypes and side projects - free to start, no sales call; Regulated or enterprise workloads - compliance attestations and an enterprise plan; AI agents and automation - an agent-ready surface (MCP / llms.txt).
Best for…
- Best overall
- ElevenLabs Text to Speech
- Best free pick
- ElevenLabs Text to Speech
- Best for enterprise
- ElevenLabs Text to Speech
- Cheapest to start
- Google Cloud Text-to-Speech
- Best for agents
- ElevenLabs Text to Speech
- Broadest surface
- Cartesia (Sonic)
Ranked (9)
#1 ElevenLabs Text to Speech
81 / 100- Best overall
- Best free pick
- Best for enterprise
- Best for agents
ElevenLabs Text to Speech is a REST API delivering high-quality, human-like AI voices for use cases spanning voice agents, audiobook production, video narration, game character voiceovers, and real-time conversational AI, with support for over a dozen synthesis capabilities including streaming, voice cloning, and multilingual output. Pricing starts at $6/month for 30,000 characters on the Starter plan, with a free tier of 10,000 characters per month and self-serve signup requiring no sales call. The API holds SOC 2 Type 2, ISO 27001, HIPAA, GDPR, and PCI DSS certifications, and offers Python and Node.js SDKs plus an MCP server. Notable customers include the Washington Post, HarperCollins, ESPN, and NVIDIA.
PricingHybrid · from $6 month (30,000 characters on Starter; ~$200/1M chars) · free tier ✓TrustSOC 2 Type II · HIPAA · GDPR · ISO 27001 · PCI DSSDoesUsed byWashington Post, HarperCollins, TIME, The New Yorker#2 Azure AI Text to Speech
79 / 100Azure AI Text to Speech is Microsoft's managed speech synthesis service, suited for voice agents, call center automation, audiobook narration, accessibility tools, and content creation. It offers over 30 deployment regions, a free tier of 500,000 characters per month, and usage-based pricing starting at $15 per million characters for standard voices. SDKs are available for Python, C#, JavaScript, Java, and Go, and the service carries SOC 2 Type 2, HIPAA, GDPR, ISO 27001, and PCI DSS certifications. Custom and personal voice cloning are supported, though professional voice fine-tuning requires limited-access approval.
PricingUsage · from $15 1M characters · free tier ✓TrustSOC 2 Type II · HIPAA · GDPR · ISO 27001 · PCI DSSDoes#3 Google Cloud Text-to-Speech
68 / 100- Cheapest to start
Google Cloud Text-to-Speech converts text or SSML input into natural-sounding audio, targeting voice agents, IVR systems, audiobook narration, accessibility tools, and real-time conversational AI. It offers a generous free tier (up to 4 million characters per month for Standard voices, 1 million for WaveNet and Neural2), with paid tiers starting at $4 per million characters on a self-serve, usage-based model. The API ships SDKs for eight languages, supports streaming and long-form synthesis, and carries SOC 2 Type 2, HIPAA, GDPR, and ISO 27001 certifications with a published SLA.
PricingUsage · from $4 1M characters · free tier ✓TrustSOC 2 Type II · HIPAA · GDPR · ISO 27001DoesUsed byIngram Content Group#4 Cartesia (Sonic)
68 / 100- Broadest surface
Cartesia's Sonic API is a text-to-speech service built for low-latency voice applications such as conversational AI agents, customer support, dubbing, and audiobook narration, with a reported first-audio-byte latency of 90ms on Sonic 3.5. Pricing starts at $50 per million characters with a free tier of 20,000 characters per month, and self-serve signup is available without a sales call. The API supports REST and WebSocket streaming, instant voice cloning on all plans, and deploys across cloud regions, on-premises, and on-device. Cartesia holds SOC 2 Type II, HIPAA, GDPR, and PCI DSS certifications, and counts Quora, Cresta, and Rasa among its customers.
PricingHybrid · from $50 1M characters · free tier ✓TrustSOC 2 Type II · HIPAA · GDPR · PCI DSSDoesUsed byQuora, Cresta, Rasa#5 Murf AI
66 / 100Murf AI is a text-to-speech API offering 150+ voices across 35 languages, supporting studio voiceovers, real-time streaming synthesis, professional voice cloning, dubbing, and translation. Pricing is usage-based per 1,000 characters with a one-time free tier of 100,000 characters and self-serve signup, scaling to custom enterprise plans. The API delivers time-to-first-audio under 130ms via its Falcon 2 model, with WebSocket streaming, webhooks, Python and Node.js SDKs, and an MCP server. It holds SOC 2 Type 2, ISO 27001, GDPR, and HIPAA certifications, with customers including Pfizer, Cisco, and Oracle.
PricingUsage · from $0 1,000 characters · free tier ✗TrustSOC 2 Type II · HIPAA · GDPR · ISO 27001DoesUsed byPfizer, Cisco, Splunk, GlencoreAvoid ifYou want to try it free before paying#6 Hume AI Octave TTS
69 / 100Hume AI Octave is a text-to-speech API focused on emotionally expressive, natural-sounding voice synthesis, targeting voice agents, audiobooks, podcasts, and conversational applications. Pricing starts at $50 per million characters with a free tier of 10,000 characters per month, self-serve signup, and an enterprise plan for higher volume. SDKs are available for Python, TypeScript, C#/.NET, and Swift, and the API supports WebSocket streaming with first-audio latency as low as 100ms on Octave 2. The service holds SOC 2 Type 2, HIPAA, and GDPR certifications.
PricingHybrid · from $50 1M characters · free tier ✓TrustSOC 2 Type II · HIPAA · GDPRDoesUsed byNiantic Spatial, GAF, Coconote#7 Resemble AI
62 / 100Resemble AI is a voice synthesis and deepfake security platform offering text-to-speech, voice cloning, real-time streaming, emotion control, and audio watermarking via a REST API, with SDKs for Node.js and Python. Pricing is usage-based at $0.0005 per second with self-serve signup, and an enterprise plan is available. The API is HIPAA and GDPR compliant, and customers include Netflix, Paramount, Deutsche Telekom, and the World Bank. WebSocket streaming requires a Business plan or above, and an MCP server is available for agent integrations.
PricingUsage · from $0.0005 second · free tier ✗TrustSOC 2 In progress · HIPAA · GDPRDoesUsed byNetflix, Telnyx, Paramount, Deutsche TelekomAvoid ifYou want to try it free before paying#8 Rime
58 / 100Rime is a text-to-speech API built for high-stakes enterprise voice applications including contact center IVR, healthcare communications, and real-time conversational AI. Pricing starts at $30 per 1M characters on a usage-based model, with a free tier of 3,000 minutes and self-serve signup available. Enterprise plans add on-premises and private VPC deployment, HIPAA compliance, SOC 2 Type 2 certification, and unlimited concurrent generations, with customers including Domino's and ConverseNow.
PricingUsage · from $30 1M characters · free tier ✗TrustSOC 2 Type II · HIPAADoesUsed byConverseNow, Domino'sAvoid ifYou want to try it free before paying#9 LMNT
58 / 100LMNT is a text-to-speech API built for low-latency, real-time applications such as conversational AI agents, gaming, audiobooks, and educational platforms, with streaming synthesis latency of 150 to 200 milliseconds. Pricing starts at $0.035 per 1,000 characters, with a free tier of 15,000 characters per month and enterprise plans available; paid tiers impose no concurrency or rate limits. The REST API supports Python, Node.js, and Go SDKs and includes instant voice cloning, word timestamps, and multilingual synthesis. LMNT holds SOC 2 Type 2 certification and counts Khan Academy, HeyGen, Vercel, and Replit among its documented customers.
PricingHybrid · from $0.04 1K characters · free tier ✓TrustSOC 2 Type IIDoesUsed byKhan Academy, HeyGen, Vapi, Fixie