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Text to speech API - Unreal Speech

Unreal Speech

Cost-effective, scalable Text-to-Speech API with realistic human-like AI voices.
Text to speech API -

Transform written content into high-quality, lifelike voiceovers with AI-powered text-to-speech technology.

Voice Quality

Mean Opinion Score
Mean Opinion Score
Mean Opinion Score (MOS) is a numerical measure that represents the perceived quality of audio samples, commonly used in evaluating text-to-speech systems. The score ranges from 1 to 5, with 1 indicating poor quality and 5 signifying excellent quality. These scores are derived from comprehensive, professionally-conducted evaluations, and are anonymized to ensure unbiased results.
  • Unreal Speech outperforms in voice quality across all categories, with its highest rating in fiction at 4.72 compared to's 4.17.
  • It indicates a more realistic and engaging listening experience, particularly in narrative content.
  • Unreal Speech maintains a consistent lead in mean opinion scores, suggesting superior overall voice quality.


Voice Cloning
Per-word Timestamps
Pitch Control
Speed Control
Phone Formats (e.g. pcm_mulaw)
Voice Cloning
Per-word Timestamps
Pitch Control
Speed Control
Phone Formats (e.g. pcm_mulaw)
  • Unreal Speech offers a solid set of features for text-to-speech applications, including per-word timestamps, pitch and speed control, and support for phone formats, but it lacks voice cloning and multi-lingual support.
  • In contrast, provides voice cloning and multi-lingual capabilities, along with per-word timestamps and speed control, but does not offer pitch control.
  • Both services support phone formats like pcm_mulaw, catering to diverse audio processing needs.
  • The choice between Unreal Speech and hinges on specific feature priorities, such as the need for voice cloning or pitch adjustment capabilities.

Pricing & Plans

250,000 characters
3M characters
Extra: $16 per 1M chars
42M characters
Extra: $12 per 1M chars
150M characters
Extra: $10 per 1M chars
625M characters
Extra: $8 per 1M chars
12,500 characters
250,000 characters
2.5M characters limit
  • Unreal Speech offers a free tier with 250,000 characters, making it significantly more generous than's free tier, which provides only 12,500 characters.
  • In terms of paid plans, Unreal Speech offers more value, especially at the higher tiers.
  • For instance, its Pro plan provides 150M characters for $1499/mo, compared to's closest Unlimited plan offering only a 2.5M characters limit for $99/mo.
  • This makes Unreal Speech not only cheaper on a per-character basis at higher usage levels but also suggests it's designed to scale more cost-effectively for heavy users.
  • In summary, Unreal Speech is substantially more economical than, especially for users requiring a large volume of characters.


  • Unreal Speech excels in voice quality, offering superior mean opinion scores across fiction, non-fiction, and conversation categories compared to
  • However, it lacks voice cloning and multi-lingual capabilities, features that provides.
  • While offers a lower entry point for free usage, Unreal Speech provides significantly more characters at higher subscription tiers, catering to users with large-scale needs.
  • Both services offer per-word timestamps, speed control, and support for phone formats, making them versatile choices for different text-to-speech requirements.

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Frequently Asked Questions

How easy is it to switch from to Unreal Speech?
  • Very easy, it only takes a few minutes. We give you 250,000 free characters per month, so you can start using our simple text-to-speech API right away.
How do the pricing plans of Unreal Speech and compare for someone just starting out?
  • For new users or those with minimal needs, Unreal Speech offers a free plan with 250,000 characters per month, whereas's free plan includes 12,500 characters.
  • This makes Unreal Speech's free offering significantly more generous in terms of character allowance for those just starting out.
How does Unreal Speech offer a more cost-effective solution for high-usage customers compared to
  • Unreal Speech stands out as the more cost-effective option for high-usage customers due to its pricing structure and character limits at higher tiers.
  • For instance, the Pro plan from Unreal Speech is priced at $1499 per month, offering up to 150 million characters.
  • In contrast,'s closest equivalent for high usage is the Unlimited plan at $99 per month, which has a significantly lower limit of 2.5 million characters.
  • This stark difference in character allowances makes Unreal Speech a far more economical choice for users with extensive Text-to-Speech needs, providing a greater volume of characters for a price point that, while higher, delivers substantially more value per dollar spent, especially for enterprise-level usage or applications requiring large amounts of speech output.
Can Unreal Speech and both support high-quality voiceovers in phone formats, and how does this impact users looking for telephony applications?
  • Yes, both Unreal Speech and support high-quality voiceovers in phone formats, such as pcm_mulaw, which is a critical feature for users aiming to deploy Text-to-Speech (TTS) technology in telephony applications, including IVR (Interactive Voice Response) systems, customer service hotlines, and other phone-based services.
  • This compatibility with phone formats ensures that the TTS output is optimized for the bandwidth and audio specifications unique to telephone communication, offering clear and intelligible voiceovers even over limited-quality phone lines.
What makes Unreal Speech more suitable for high-quality voiceovers in fiction?
  • Unreal Speech boasts a higher Mean Opinion Score (MOS) for fiction voiceovers, scoring 4.72, compared to's 4.17.
  • This indicates that Unreal Speech offers more realistic and engaging voiceovers for fictional content, making it the preferred choice for creators looking for superior voice quality.
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