Head-to-Head Comparison

Sesame AI (CSM) vs Dia (Nari Labs)

Compare Sesame AI (CSM) and Dia (Nari Labs) side by side. See which text-to-speech platform is better for your needs in 2025.

S

Sesame AI (CSM)

4.4/5
startup

Conversational Speech Model for emotionally intelligent, human-like AI speech.

D

Dia (Nari Labs)

4/5
open-source

Multi-speaker dialogue model for natural conversations and podcasts.

Feature Comparison

FeatureSesame AI (CSM)Dia (Nari Labs)
Rating
4.4/54/5
Starting Price
Free tier availableFree tier available
Languages
1+1+
Voice Cloning
API Available
Free Tier
Enterprise Plan

Pros & Cons

Sesame AI (CSM)

Pros

  • • Most natural conversational AI
  • • Emotional intelligence
  • • Open-source model available
  • • Novel approach to TTS
  • • Great for AI companions

Cons

  • • Very new technology
  • • Limited voices currently
  • • Higher compute requirements

Dia (Nari Labs)

Pros

  • • Excellent for dialogue/conversations
  • • Multi-speaker in single model
  • • Natural emotional expression
  • • Apache 2.0 license
  • • Innovative approach

Cons

  • • Newer model, less tested
  • • Requires significant GPU
  • • Limited voices without cloning

Other Comparisons

Sesame AI (CSM) vs ElevenLabs
Sesame AI (CSM) vs Chatterbox (Resemble AI)
Sesame AI (CSM) vs OpenAI TTS

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