Text-to-speech
Sesame CSM 1B requirements, license & speed
By Sesame · released 2025-03-06 · 1.55B parameters
Commercial useYes
Min memoryNot stated
Runs on CPUUnknown
StreamingUnknown
Key facts
- License
- apache-2.0 source
- Commercial use
- Yes sourceApache-2.0 (HF repo gated)
- Parameters
- 1.55B sourcesafetensors parameter count
- Minimum memory
- Not stated by source
- Runs on CPU
- Unknown
- Streaming
- Unknown
- Voice cloning
- Unknown
- Languages
- en sourceSome non-English capacity but 'likely won't do well'
- Released
- 2025-03-06 sourceHugging Face repo creation date (proxy for release date)
- Gated on HF
- Yes accept terms on Hugging Face before downloading
Measured speed & memory
Benchmark pending. We haven't measured Sesame CSM 1B yet. Planned targets: Raspberry Pi 5, CPU-only x86, Apple Silicon Mac and consumer GPUs. Get notified.
Accuracy
We don't run accuracy evals. For quality and intelligibility, check the Hugging Face Open TTS Leaderboard.
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