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Use cases · Text-to-Speech APIs

Best Text-to-Speech APIs with SSML Control

Text-to-speech APIs with SSML support for fine-grained control over prosody, pauses, emphasis, and pronunciation.

Required capability: SSML control.

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).

ElevenLabs Text to Speech profile →

Best for…

Best overall
ElevenLabs Text to Speech - our default pick: strongest across pricing, trust and breadth
Best free pick
ElevenLabs Text to Speech - free tier: Free plan at $0/month includes 10,000 credits per month (1 text character = 1 credit for…
Best for enterprise
ElevenLabs Text to Speech - for regulated or large teams: SOC 2 Type II, HIPAA, enterprise plan
Cheapest to start
Amazon Polly - from $4 1M characters to start; compare on your real usage, not the entry price
Best for agents
ElevenLabs Text to Speech - easiest to wire up programmatically: MCP server + llms.txt
Broadest surface
Amazon Polly - 22 documented actions; breadth isn't quality, but it's the most to build on

Ranked (5)

  • #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 DSS
    Does
    • Real-time streaming
    • Voice cloning
    • Voice design
    • SSML control
    • Multilingual voices
    • Word timestamps
    Used byWashington Post, HarperCollins, TIME, The New Yorker

    ElevenLabs Text to Speech profile →

  • #2 Azure AI Text to Speech

    79 / 100

    Azure 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 DSS
    Does
    • Real-time streaming
    • Voice cloning
    • Voice design
    • SSML control
    • Multilingual voices
    • Word timestamps

    Azure AI Text to Speech profile →

  • #3 Amazon Polly

    72 / 100
    • Cheapest to start
    • Broadest surface

    Amazon Polly is an AWS cloud text-to-speech service, launched in 2016, suited for mobile apps, eLearning platforms, accessibility tools, IVR systems, and IoT applications. Pricing is usage-based at $4.00 per million characters, with a permanent free tier of 5 million standard-voice characters per month and additional neural, long-form, and generative character allowances for the first year. SDKs are available in ten languages including Python, Node.js, Java, Go, and Rust, and the service is available across more than 20 AWS regions including GovCloud. It holds SOC 2 Type 2, HIPAA, GDPR, ISO 27001, and PCI DSS certifications.

    PricingUsage · from $4 1M characters · free tier ✓
    TrustSOC 2 Type II · HIPAA · GDPR · ISO 27001 · PCI DSS
    Does
    • Real-time streaming
    • SSML control
    • Multilingual voices
    • Word timestamps

    Amazon Polly profile →

  • #4 Google Cloud Text-to-Speech

    68 / 100

    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 27001
    Does
    • Real-time streaming
    • Voice cloning
    • SSML control
    • Multilingual voices
    • Word timestamps
    Used byIngram Content Group

    Google Cloud Text-to-Speech profile →

  • #5 Resemble AI

    62 / 100

    Resemble 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 · GDPR
    Does
    • Real-time streaming
    • Voice cloning
    • Voice design
    • SSML control
    • Multilingual voices
    • Word timestamps
    Used byNetflix, Telnyx, Paramount, Deutsche Telekom
    Avoid ifYou want to try it free before paying

    Resemble AI profile →

Scope: only APIs with the required capability, picked from published, cited data. The score is one input, not the verdict, and we lead with each one’s trade-off. No reviews yet, no paid placement. See the full Text-to-Speech APIs directory.