CSM 1B
by SesameSpeech synthesis
CSM 1B is a conversational speech model from Sesame. It accepts text input and produces English speech output, with voice options spanning conversational and read-speech styles. At 1B parameters, it...
- Context
- 4.1K tokens
- Max output
- 3,686 tokens
- Released
- 2026-04-23
- Weights
- unknown
sesame/csm-1b
Specifications
Full facts as recorded, incl. what is unknown.
- Released
- 2026-04-23
- Weights
- unknown
- Input
- Text
- Output
- speech
- Context window
- 4,096 max across endpoints
- Max output
- 3,686
- Providers
- 0 + 1 gateway, not counted as providers
- Epoch Capabilities Index
- not evaluated
- Direct price range
- no comparable direct price
More details
- Last updated
- —
- Knowledge cutoff
Capabilities
Across all endpoints: supported if any endpoint supports it.
- Tool callingunknown
- Parallel toolsunknown
- Structured outputunknown
- Reasoningunknown
- Image inputunknown
- PDF inputunknown
- Audio inputunknown
- Audio outputunknown
- Video inputunknown
- Prompt cachingunknown
- Web searchunknown
- Computer useunknown
- System messagesunknown
- Assistant prefillunknown
- Temperatureunknown
- Streamingunknown
- Attachmentsunknown
Endpoints
One row per provider and variant; gateways are listed separately.
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Cost calculator
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Heads up: prices are indicative list rates scraped from provider pricing pages; verify with the provider before relying on them. Report incorrect data for this model