ElevenLabs vs Hy4 preview: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of ElevenLabs and Hy4 preview — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.
ElevenLabs
ElevenLabs
Text-to-speech and AI voice generator delivering lifelike voices across thousands of voices and 70+ languages with APIs and SDKs.
Key features
- Lifelike Voice Generation: Produces natural, expressive speech with control over tone, emotion, and accent to create realistic spoken content for diverse applications.
- Massive Voice Library: Provides thousands of preset voices and the ability to create or clone custom voices, enabling unique branding and character creation.
- Multilingual Support: Supports speech synthesis in 70+ languages, allowing content creators and developers to generate audio for global audiences.
- Official SDKs & APIs: Offers secure, scalable REST APIs and first-party SDKs (Python, JavaScript/Node, Swift) for easy integration into applications, services, and pipelines.
- Conversational Real-Time Audio: Enables building interactive conversational agents and real-time audio experiences with low-latency streaming and conversational features.
- MCP & Integration Tools: Maintains an MCP server and community client tooling (elevenlabs-mcp) to integrate ElevenLabs into multi-client platforms and desktop apps.
- Creator Tools & Workflow: Web-based tools for rapid production (audiobooks, podcasts) plus developer examples and sample repos to accelerate content generation workflows.
- HTTP API for text-to-speech and voice generation with API key authentication
- Official SDKs: Python (elevenlabs), JavaScript/Node (elevenlabs-js), Swift (elevenlabs-swift-sdk)
- Support for creating synthetic voices, cloning existing voices, and generating new voice personas with control over gender, age, accent, and emotion
- Multilingual support: thousands of voices across 70+ languages
- Streaming and real-time audio capabilities for conversational agents
- Conversational AI SDK/server (MCP) for integrating with desktop clients and agent platforms
- Reference examples and repos (elevenlabs-python, elevenlabs-js, elevenlabs-mcp, examples, showcase)
- Client-side playback and tooling notes (elevenlabs-js requires MPV and ffmpeg for playback in some examples)
- Credit/plan-based usage model; API usage tied to account keys and quotas
- Retries and error-handling behaviors documented in SDKs (e.g., HTTP status based retry logic)
Best for
- Audiobook Production: Rapidly convert long-form text into natural-sounding audiobooks using selectable voices, pacing controls, and emotional cues.
- Podcasting & Content Creation: Produce voice tracks, host reads, and episode narration with branded or cloned voices to speed up audio content production.
- Game & Media Voice Design: Generate character dialogue and localized voice assets in multiple languages and accents for games, animations, and interactive media.
- Conversational Agents & IVR: Power real-time voice interactions for chatbots, virtual assistants, or IVR systems using conversational audio and low-latency streaming.
- Accessibility & Assistive Tech: Provide natural-sounding speech for screen readers, learning tools, and accessibility apps to improve user experience for sight-impaired users.
- Voice Cloning for Creators: Create custom voice models (with consent) to maintain consistent branding or replicate voices for storytelling and media production.
- Generating audiobooks quickly using high-quality synthetic voices
- Powering conversational agents and real-time voice assistants with streaming audio
- Voice cloning for content creators, dubbing, and localization
- Accessibility features: screen readers and narrated content
- Podcasts, narration, and automated voice-over production
- Integrating TTS into web and mobile apps via official SDKs and HTTP API
Hy4 preview
Tencent
Tencent's open-weight Hy4 preview, a 770B-parameter Mixture-of-Experts model with 49B active parameters and a 1M-token context window.
Key features
- 770B Mixture-of-Experts Architecture: Holds 770 billion total parameters while activating only 49 billion per token, so capacity scales without proportional inference cost.
- 1M-Token Context Window: Accepts inputs exceeding one million tokens, allowing whole codebases, long document sets or extended agent traces in a single prompt.
- Apache 2.0 Open Weights: Released under a permissive licence that allows commercial use, modification and redistribution with no separate agreement.
- Productivity Task Focus: Tuned for real-world coding, office work and scientific research rather than narrow benchmark optimisation.
- Multi-Product Availability: Accessible globally through Tencent's WorkBuddy, CodeBuddy, Yuanbao and ima applications in addition to the raw weights.
- API Access via TokenHub and OpenRouter: Can be called through Tencent Cloud TokenHub or OpenRouter for teams that prefer hosted inference over self-hosting.
Best for
- Whole-Repository Code Work: Load an entire codebase into the million-token context to reason about refactors and cross-file dependencies at once.
- Long-Horizon Agent Tasks: Drive multi-step agent workflows where the full history of tool calls and intermediate results must stay in context.
- Self-Hosted Deployment: Run a frontier-scale open-weight model on private infrastructure where data cannot leave the organisation.
- Scientific Literature Analysis: Ingest large collections of papers or experimental logs and synthesise findings without chunking the input.
- Office Document Processing: Summarise, draft and restructure long reports, contracts and spreadsheets in enterprise workflows.
- Commercial Fine-Tuning: Adapt the weights for a proprietary product under the Apache 2.0 licence without negotiating a model licence.