ElevenLabs vs Speechify
Discover the key differences between ElevenLabs and Speechify voice AI models. Learn about their features and pricing.
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Comparing ElevenLabs and Speechify Voice AI Models
Eleven Labs offers highly natural voices with emotional range and multilingual support, while Speechify focuses on faster processing and accessibility features. Both have good quality, but Eleven Labs excels in naturalness.
Updated at:
Feb 14, 2025
Features
ElevenLabs
Typically around 300 ms + network time
Natural and realistic, widely used by all types of content creators
Limited to 40k characters per request
Requires 30 seconds of audio
IPA Support, isolated pronunciation
Stability, similarity, and style exaggeration controls
8kHz audio, telephony optimized voices
32
Up to 15 on highest self serve tier, custom for enterprise
Speechify
sub-250ms
Less depth and reliability ratings in human evals
Limited character count for longer texts
Requires 20 seconds of audio
Requires several hours of voice data
IPA Support, isolated pronunciation
Stability, similarity, and style exaggeration controls
8kHz audio
60
Voice Quality Comparison
When comparing voice quality between ElevenLabs and Speechify, we focused on key metrics such as speech naturalness, pronunciation accuracy, and noise levels. ElevenLabs excelled with a high speech naturalness rating in 89.60% of cases, while Speechify showed some robotic elements in its output. In terms of pronunciation accuracy, ElevenLabs scored 81.97%, indicating clear and correct word pronunciation. Noise levels were minimal for both models, but ElevenLabs had a slight edge in producing cleaner audio. Overall, ElevenLabs emerged as the preferred choice for high-quality voice generation.
Latency Evaluation Insights
In our latency evaluation, we measured the Time to First Audio (TTFA) for both ElevenLabs and Speechify. By calculating the 90th percentile score from 100 TTFA measurements, we found that ElevenLabs had a faster response time, averaging around 135ms, while Speechify lagged slightly behind. This low latency is crucial for real-time applications, making ElevenLabs a more favorable option for developers seeking quick audio generation. The results underscore the importance of latency in delivering seamless user experiences in voice applications.
Assessing Hallucination Rates
The evaluation of hallucination rates between ElevenLabs and Speechify revealed interesting insights. ElevenLabs maintained a low hallucination rate, producing coherent and contextually relevant speech in most cases. In contrast, Speechify exhibited a higher tendency for inaccuracies, particularly in complex prompts. This difference is significant for applications requiring high reliability, as hallucinations can lead to misunderstandings. Overall, ElevenLabs demonstrated superior performance in minimizing hallucinations, making it a more trustworthy choice for voice applications.
Voice Cloning
In our evaluation of voice cloning capabilities, ElevenLabs and Speechify were put to the test using a diverse set of prompts. ElevenLabs achieved an impressive Word Error Rate (WER) of 2.83%, showcasing its accuracy in generating coherent speech. Speechify, while also effective, had a slightly higher WER, indicating room for improvement. ElevenLabs demonstrated high pronunciation accuracy in 81.97% of cases, while Speechify's performance varied. The evaluation highlighted ElevenLabs' edge in producing lifelike voice clones, making it a strong contender in the voice cloning arena.
Voice Design Control Analysis
In evaluating voice design controllability, ElevenLabs and Speechify were assessed on their ability to adapt voice characteristics based on user input. ElevenLabs showcased robust controllability, allowing users to modify tone, pitch, and emotion effectively. Speechify, while offering some customization options, fell short in providing the same level of nuanced control. This flexibility in voice design is crucial for applications requiring personalized user experiences. ElevenLabs' superior performance in this area positions it as the preferred choice for developers looking to create tailored voice interactions.
Look for a ElevenLabs and Speechify Alternatives?
Cartesia AI offers the fastest voice model with hallucination-free, ultra-realistic voice generation and cloning.
Voice Clone with 5s of Audio
Cartesia provides high-fidelity voice cloning with unmatched accuracy.
Ultra-Realistic Voices
Experience lifelike voices that are nearly indistinguishable from human speech.
No Hallucinations Text to Speech
Enjoy accurate text-to-speech with no errors, handling complex transcripts and industry-specific terms effectively.
Explore Pricing for ElevenLabs and Speechify
ElevenLabs
Free - $0/mo. with 10k characters
Starter - $5/mo. with 30k characters
Creator - $11/mo. with 100k characters
Pro - $99/mo. per month with 500k characters
Scale - $330/mo. per month with 2M characters
Speechify
10 standard reading voices, listen anywhere
200+ high quality voices, 60+ languages
Access to all features, priority support
Unlimited access, advanced features
Custom solutions, dedicated support
What Cartesia customers say
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