sesameListed Apr 23, 2026

Sesame: CSM 1B

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...

Compare

Context window4.1K

Max output3.7K

Parameters1B

Provider endpoints0

Benchmark results0

Measured performance

Benchmark results

All leaderboards ↗

—

No published results in this index yet

Scores appear here when an evaluation matches this exact model.

Access & cost

Prices across providers

0 quotes

No listed provider price

OpenRouter ↗

Model specifications

Developer: sesame
Modality: Audio
Context: 4,096 tokens
Maximum output: 3,686 tokens
Weights: Not reported
Provider listed: Apr 23, 2026
First discovered: Oct 16, 2026

Exact identities

openroutersesame/csm-1b

Sources

OpenRouter ↗

Updated Oct 18, 2026

More from sesame

View all ↗

sesameListed Mar 15

csm-1b

CSM (Conversational Speech Model) is a speech generation model from Sesame that generates RVQ audio codes from text and audio inputs. The model architecture employs a Llama backbone and a smaller audio…

1BNo reported score

No reported score

Listed from $0.007/ 1K characters · USDDeepInfra1,000 input characters

+Compare