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Bytedance Seed Speech text to speech fal AI v2

Needs text.

Inputs

1 required
Text
The text to synthesize into speechRequired · text
Voice
Voice to use for synthesisOptional · voice
Pitch
Voice pitch shift in semitonesOptional · pitch
Voice instruction
Optional natural-language instruction that steers the delivery (tone, emotion, pace, volume), e.g. 'Speak in a…Optional · voice_instruction
Sample rate
Sample rate of the output audio in HzOptional · sample_rate
Language
Force the text to be read as a single language, disabling automatic language detectionOptional · language
Volume
VolumeOptional · volume
Output format
Output audio format (mp3 or opus)Optional · output_format
Speed
Speech speedOptional · speed

Pricing

Price
$0.03 per 1,000 characters
Billing
The provider’s price, with no markup. Billed for measured usage.
Price checked
3 November 2026

Call

Your agent reads the schema and the price with inspect_tool before it runs the tool.

MCP call
cURL command
TypeScript
Tool ID

Alternatives

AI audio

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