falText to speechComing soon

google/gemini-3.8-flash-lite-tts

Name: google/gemini-3.8-flash-lite-tts
Brand: fal

google/gemini-3.8-flash-lite-tts is a text to speech tool from fal that runs in the background and returns audio. Coming soon: listed with its price, not yet open to runs.

This tool is listed but not yet available to run.

Price pending

Pricing

Price pending.

Limits

Runs: In the background
Returns: audio
Longest queue wait: 3600s
Run deadline: 1800s
Largest inline input: 1024 KB
Largest input file: 500 MB
Largest output: 4768 MB
Outputs per run: 16

Input

Field	Kind	Default	Description
`prompt`	text	—	Verbatim text for single-speaker speech. Put delivery directions in style_instructions; inline vocal events may use <laugh> or <sigh>. For dialogue, omit prompt and provide speakers and turns instead. The provider limits the complete input to 8,192 tokens.
`style_instructions`	text	—	Delivery style, separate from the spoken transcript. Applies to all turns unless overridden.
`voice`	one of Achernar, Achird, Algenib, Algieba, Alnilam, Aoede, Autonoe, Callirrhoe, Charon, Despina, Enceladus, Erinome, Fenrir, Gacrux, Iapetus, Kore, Laomedeia, Leda, Orus, Pulcherrima, Puck, Rasalgethi, Sadachbia, Sadaltager, Schedar, Sulafat, Umbriel, Vindemiatrix, Zephyr, Zubenelgenubi	Kore	Prebuilt voice for single-speaker speech.
`speakers`	JSON	—	Exactly two distinct speaker aliases and their prebuilt voices for dialogue.
`turns`	JSON	—	Ordered dialogue turns, each identifying a configured speaker.

Same request in code

curl https://api.spiral.ai/v1/runs \
  -H "Authorization: Bearer $SPIRAL_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
    "provider": "fal",
    "model": "google/gemini-3.8-flash-lite-tts",
    "input": {}
  }'