Qwen-Audio-3.0-TTS Flash vs CSM 1B: side-by-side summary

Qwen-Audio-3.0-TTS Flash and CSM 1B are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Qwen-Audio-3.0-TTS Flash, from Qwen, is priced at $15/M characters on OpenRouter.

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

Context window

• Qwen-Audio-3.0-TTS Flash: Not published
• CSM 1B: 4,096 tokens

Price

• Qwen-Audio-3.0-TTS Flash: $15/M characters
• CSM 1B: $7/M characters

Provided by

• Qwen-Audio-3.0-TTS Flash: Qwen
• CSM 1B: sesame

• Qwen-Audio-3.0-TTS Flash model details, providers and pricing
• CSM 1B model details, providers and pricing