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Speech 2.8 HD vs Grok Voice TTS 1.0: side-by-side summary

Speech 2.8 HD and Grok Voice TTS 1.0 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Speech 2.8 HD, from MiniMax, is priced at $100/M characters on OpenRouter.

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

Context window
  • Speech 2.8 HD: Not published
  • Grok Voice TTS 1.0: 15,000 tokens
Price
  • Speech 2.8 HD: $100/M characters
  • Grok Voice TTS 1.0: $15/M characters
Provided by
  • Speech 2.8 HD: MiniMax
  • Grok Voice TTS 1.0: SpaceXAI
  • Speech 2.8 HD model details, providers and pricing
  • Grok Voice TTS 1.0 model details, providers and pricing