Overview

Model specifications

Context: 4,096 tokens
Maximum output: 3,686 tokens
Architecture: text->speech
Tokenizer: Other
Knowledge cutoff: Not provided
Moderated: No

OPENROUTER

Complete pricing

Synchronized OpenRouter rates. Token prices are shown per one million tokens.

Characters: $7

API

Model configuration

Supported voices

conversational_aconversational_bread_speech_aread_speech_bread_speech_cread_speech_dnone

API

Quick start

Call this exact model ID through OpenRouter’s OpenAI-compatible API.

curl https://openrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"sesame/csm-1b","messages":[{"role":"user","content":"Hello!"}]}'

Capabilities

Input → Output

Input

text

Output

speech

API

Supported API parameters

frequency_penaltymax_tokensmin_ppresence_penaltyrepetition_penaltyresponse_formatseedstoptemperaturetop_ktop_p

Available providers

1 Provider

Live providers on OpenRouter

Provider availability, latency, throughput and routing can change continuously. Open the source page for current operational data.

OpenRouter

DeepInfra

unknown

Context: 4K
Maximum output: 4K
Input: $7.00
Output: Free
Cache read: Not provided
Cache write: Not provided

Sesame: CSM 1B