Zonos v0.1 Transformer vs CSM 1B: side-by-side summary

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

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

CSM 1B, from sesame, has a 4,096-token context window and is priced at $7/M characters on OpenRouter.

Context window

• Zonos v0.1 Transformer: 4,096 tokens
• CSM 1B: 4,096 tokens

Price

• Zonos v0.1 Transformer: Pricing varies by provider
• CSM 1B: $7/M characters

Provided by

• Zonos v0.1 Transformer: zyphra
• CSM 1B: sesame

• Zonos v0.1 Transformer model details, providers and pricing
• CSM 1B model details, providers and pricing