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12 changes: 10 additions & 2 deletions api-reference/server/services/tts/cartesia.mdx
Original file line number Diff line number Diff line change
Expand Up @@ -78,7 +78,7 @@ Before using Cartesia TTS services, you need:
`settings=CartesiaTTSService.Settings(model=...)` instead._
</ParamField>

<ParamField path="cartesia_version" type="str" default="2025-04-16">
<ParamField path="cartesia_version" type="str" default="2026-03-01">
API version string for Cartesia service.
</ParamField>

Expand All @@ -99,6 +99,14 @@ Before using Cartesia TTS services, you need:
Audio container format.
</ParamField>

<ParamField path="max_buffer_delay_ms" type="int" default="None">
Server-side buffering window (in milliseconds) before generation starts. `0`
disables server buffering (custom buffering); values in (0, 5000] enable
managed buffering. When `None`, automatically derived from
`text_aggregation_mode`: `0` for `SENTENCE` mode (avoids stacking client and
server buffering), unset for `TOKEN` mode (uses Cartesia's 3000ms default).
</ParamField>

<ParamField
path="text_aggregation_mode"
type="TextAggregationMode"
Expand Down Expand Up @@ -131,7 +139,7 @@ The HTTP service accepts similar parameters to the WebSocket service, with these
HTTP API base URL (instead of `url` for WebSocket).
</ParamField>

<ParamField path="cartesia_version" type="str" default="2024-11-13">
<ParamField path="cartesia_version" type="str" default="2026-03-01">
API version for HTTP service.
</ParamField>

Expand Down
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