SpeechStableGemini

Gemini 3.8 Flash TTS

google/gemini-3.8-flash-tts

Transcription
Get an API keyCompare models
Pricing
Input / 1M tokens
$0.60
Output / 1M tokens
$10.80
Example workload
$3.30 · 1M in + 250K out
Metered from your APIRaven balance. Normalized usage ships in every response.

Call it from any OpenAI SDK

Use the official SDK with a custom base URL. The example below is complete — swap the model id to hit a different model in the catalog.

curl https://api.apiraven.com/v1/audio/speech \
  -H "Authorization: Bearer $APIRAVEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "google/gemini-3.8-flash-tts",
    "voice": "alloy",
    "input": "Welcome to unified inference.",
    "response_format": "mp3"
  }' --output speech.mp3
POST /v1/audio/transcriptions

Standardized parameters

Parameters behave the same on every backend. Values that cannot be honored are either mapped to the closest equivalent or safely dropped — never silently corrupted.

ParameterTypeDefaultRangeStatus
Core
input

Text to synthesize.

string——Supported
voicestringalloy—Supported
Output
response_formatenummp3mp3 | opus | aac | flac | wav | pcmSupported
speednumber10.25 – 4Supported

Using Gemini 3.8 Flash TTS on APIRaven

Which provider actually runs my request?+

APIRaven routes each request across a pool of managed inference backends. The model id, request shape and response are identical no matter which backend serves it — you never manage provider accounts, keys or regions.

Is the API OpenAI-compatible?+

Yes. Point any OpenAI SDK at https://api.apiraven.com/v1 with your APIRaven key. Chat, vision, images, embeddings and audio all follow the OpenAI request and response shapes.

What happens when a backend degrades?+

Requests are retried and failed over automatically before the first token is returned. If a model is temporarily unavailable, the API returns one stable error envelope instead of a provider-specific failure.

How is usage billed?+

Per token for text, per image for generation and per minute for transcription — deducted from your APIRaven balance. Every response includes normalized usage so you can meter cost per request.

Ship with google/gemini-3.8-flash-tts

One base URL, one balance, every model. Point your OpenAI SDK at APIRaven and switch models with a single string.

Get your API key