About
SpeechGen is a powerful AI voice generator and text-to-speech platform built on advanced neural synthesis technology. It offers access to 5,000+ realistic voices spanning 150 languages and accents, allowing users to produce professional-quality voiceovers directly in the browser with no software installation required. Users can type or paste text, upload DOCX, PDF, or SRT files, and download finished audio in MP3, WAV, FLAC, OGG, M4A, and other formats. Fine-grained controls include speed, pitch, volume, pause duration between sentences and paragraphs, bitrate, sample rate, and channel settings. SSML support enables advanced prosody tuning for developers and power users. Background music tracks can be layered into the output, and a Smart Cache feature avoids redundant processing for repeated content. The platform supports Standard, HD, and PRO voice tiers, and includes speech styles such as Cheerful, Angry, Whisper, and Sad for expressive narration. An API is available for programmatic integration into apps and workflows. SpeechGen also offers Audio-to-Text transcription and YouTube video transcription tools. With 500K+ users, 70K business accounts, and over 700 million files generated, it is trusted across industries including marketing, education, healthcare, e-commerce, and media. A commercial license is included with all plans. Pricing is credit-based (pay-as-you-go) after the free tier.
Key Features
- 5,000+ AI Voices in 150 Languages: Choose from a massive library of Standard, HD, and PRO neural voices with filters for gender, accent, language, and expressive style.
- Multiple Audio Output Formats: Download finished voiceovers in MP3, WAV, FLAC, OGG, M4A, and more, with full control over bitrate, sample rate, and channel configuration.
- Advanced Prosody & SSML Controls: Fine-tune speed, pitch, volume, pause duration, emphasis, and phoneme pronunciation using built-in controls or SSML markup.
- Background Music Integration: Layer background music tracks into your voiceover output directly within the editor, with volume and loop controls.
- API & File Upload Support: Integrate text-to-speech into apps via API, or upload DOCX, PDF, and SRT files for bulk or subtitle-to-audio conversion.
Use Cases
- Creating professional voiceovers for marketing videos and product explainers without hiring a voice actor.
- Narrating e-learning courses and training modules in multiple languages for global audiences.
- Converting subtitle or SRT files into audio tracks for video localization and accessibility.
- Producing podcast intros, transitions, and filler segments using expressive AI voices.
- Integrating text-to-speech via API into SaaS products, accessibility tools, or content automation pipelines.
Pros
- Huge Voice Library: 5,000+ voices across 150 languages gives unmatched coverage for global content production and localization.
- No Sign-Up to Start: Up to 1,000 characters can be converted with no account or credit card required, lowering the barrier to try the service.
- Commercial License Included: All generated audio comes with a commercial license, making it safe to use in paid projects, ads, and client deliverables.
- Flexible Format & Quality Settings: Granular control over output format, bitrate, sample rate, and pause timing ensures audio fits any platform or production workflow.
Cons
- Credit-Based Costs Can Scale Quickly: Heavy users producing large volumes of audio may find the pay-as-you-go model expensive compared to flat-rate competitors.
- Limited Free Tier: The free allowance of 1,000 characters is useful for testing but insufficient for real projects without purchasing credits.
- Processing Time for Long Content: Generating audio for lengthy documents or books takes noticeably longer than short clips, with no real-time progress indicator.
Frequently Asked Questions
How many voices and languages does SpeechGen support?
SpeechGen offers 5,000+ AI voices spanning 150 languages and regional accents, available in Standard, HD, and PRO quality tiers.
Is SpeechGen free to use?
Yes, SpeechGen lets you convert up to 1,000 characters for free with no account or credit card required. Beyond that, a credit-based pay-as-you-go system applies.
What audio formats can I download?
You can download audio in MP3, WAV, FLAC, OGG, M4A, WEBM_OPUS, and other formats. Bitrate, sample rate, and channel settings are fully configurable.
Can I use SpeechGen audio in commercial projects?
Yes. A commercial license is included with all plans, so generated audio can be used in ads, client videos, e-learning courses, and other paid content.
Does SpeechGen have an API?
Yes, SpeechGen provides an API that allows developers to integrate text-to-speech functionality programmatically into their own applications and workflows.
