Grok Voice TTS 1.0 vs Zonos v0.1 Transformer: side-by-side summary

Grok Voice TTS 1.0 and Zonos v0.1 Transformer are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Grok Voice TTS 1.0, from SpaceXAI, has a 15,000-token context window and is priced at $15/M characters on OpenRouter.

Zonos v0.1 Transformer, from zyphra, has a 4,096-token context window and is priced by the provider serving it on OpenRouter.

Context window

• Grok Voice TTS 1.0: 15,000 tokens
• Zonos v0.1 Transformer: 4,096 tokens

Price

• Grok Voice TTS 1.0: $15/M characters
• Zonos v0.1 Transformer: Pricing varies by provider

Provided by

• Grok Voice TTS 1.0: SpaceXAI
• Zonos v0.1 Transformer: zyphra

• Grok Voice TTS 1.0 model details, providers and pricing
• Zonos v0.1 Transformer model details, providers and pricing