Cartesia Sonic-3 vs Inworld Realtime TTS-2

< Text to Speech (TTS)

Comparing two text to speech (tts) models: features, pricing, pros and cons.

Cartesia Sonic-3Inworld Realtime TTS-2
ProviderCartesiaInworld
Pricing$20–200/moFree tier available
Quality
9/10
8.8/10
Speed
10/10
9.3/10
Ease of use
7/10
8/10
Value
5/10
6/10
TasksText to SpeechText to Speech
Pros
  • + Fastest TTS (40ms)
  • + Emotions and laughter
  • + Great for realtime
  • + Realtime
  • + Fresh ElevenLabs competitor
Cons
  • API integration experience needed
  • No free plan
  • Smaller ecosystem

Cartesia Sonic-3

Fastest TTS with emotion and laughter support in speech.

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Inworld Realtime TTS-2

New competitor in realtime TTS (2026).

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