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Google: Gemini 3.8 Flash TTS

google/gemini-3.8-flash-tts

text audioContext 33K

Gemini 3.8 Flash TTS is a text-to-speech model from Google and the successor to [Gemini 3.1 Flash TTS Preview](https://openrouter.ai/google/gemini-3.1-flash-tts-preview). It is the creative tier of the 3.8 TTS family, suited...

Price

Input$0.5

per 1M tokens

Output$9

per 1M tokens

Cheaper on fal (−98.3%) versus the lab price

Compare this model

Providers

Each row is one seller. Prices are the published rate from that source. A dash means that source did not publish the amount. Sorted by a 3:1 blend of input and output.

ProviderTagQuant InputOutput ContextUptimeStatusSource
fal — — Not published— Not published— — — Listed fal
Google google-vertex/global — $0.5/1M $9/1M 33K 100% Live openrouter-endpoints
Google AI Studio google-ai-studio — $0.5/1M $9/1M 33K 100% Live openrouter-endpoints
Replicate — — Not published— Not published— — — Listed replicate

Monthly bill

Token models use the token counts. Image, video, and audio models use units times the flat rate.

$9.50 at list price for this workload

Every rate
UnitInputOutputFlatConfidence
token $0.5/1M $9/1M Not published— official

Price history

Google: Gemini 3.8 Flash TTS
10 0 2026-09-24: $0.52026-09-25: $0.52026-09-26: $0.52026-09-27: $0.52026-09-28: $0.52026-09-29: $0.52026-09-30: $0.52026-10-01: $0.52026-10-02: $0.52026-10-03: $0.52026-10-04: $0.52026-10-05: $0.52026-10-06: $0.52026-10-07: $0.52026-10-08: $0.52026-10-09: $0.52026-10-10: $0.52026-10-11: $0.52026-10-12: $0.52026-10-13: $0.52026-10-14: $0.52026-10-15: $0.52026-10-16: $0.52026-10-17: $0.52026-10-18: $0.52026-10-19: $0.52026-10-20: $0.52026-10-21: $0.52026-10-22: $0.52026-10-23: $0.52026-10-24: $0.52026-10-25: $0.52026-10-26: $0.52026-10-27: $0.52026-10-28: $0.52026-10-29: $0.52026-10-30: $0.5 2026-09-24 2026-10-30

input or flat output

Daily snapshots
UTC dateUnitInputOutputFlat
2026-09-24 token $0.5 $9 Not published—
2026-09-25 token $0.5 $9 Not published—
2026-09-26 token $0.5 $9 Not published—
2026-09-27 token $0.5 $9 Not published—
2026-09-28 token $0.5 $9 Not published—
2026-09-29 token $0.5 $9 Not published—
2026-09-30 token $0.5 $9 Not published—
2026-10-01 token $0.5 $9 Not published—
2026-10-02 token $0.5 $9 Not published—
2026-10-03 token $0.5 $9 Not published—
2026-10-04 token $0.5 $9 Not published—
2026-10-05 token $0.5 $9 Not published—
2026-10-06 token $0.5 $9 Not published—
2026-10-07 token $0.5 $9 Not published—
2026-10-08 token $0.5 $9 Not published—
2026-10-09 token $0.5 $9 Not published—
2026-10-10 token $0.5 $9 Not published—
2026-10-11 token $0.5 $9 Not published—
2026-10-12 token $0.5 $9 Not published—
2026-10-13 token $0.5 $9 Not published—
2026-10-14 token $0.5 $9 Not published—
2026-10-15 token $0.5 $9 Not published—
2026-10-16 token $0.5 $9 Not published—
2026-10-17 token $0.5 $9 Not published—
2026-10-18 token $0.5 $9 Not published—
2026-10-19 token $0.5 $9 Not published—
2026-10-20 token $0.5 $9 Not published—
2026-10-21 token $0.5 $9 Not published—
2026-10-22 token $0.5 $9 Not published—
2026-10-23 token $0.5 $9 Not published—
2026-10-24 token $0.5 $9 Not published—
2026-10-25 token $0.5 $9 Not published—
2026-10-26 token $0.5 $9 Not published—
2026-10-27 token $0.5 $9 Not published—
2026-10-28 token $0.5 $9 Not published—
2026-10-29 token $0.5 $9 Not published—
2026-10-30 token $0.5 $9 Not published—

Alternatives

Call this model

OpenRouter id google/gemini-3.8-flash-tts. InferenceList does not send the request.

curl
curl https://openrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"google/gemini-3.8-flash-tts","messages":[{"role":"user","content":"Hello"}]}'

JavaScript
await fetch("https://openrouter.ai/api/v1/chat/completions", {
  method: "POST",
  headers: {
    Authorization: "Bearer " + process.env.OPENROUTER_API_KEY,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    model: "google/gemini-3.8-flash-tts",
    messages: [{ role: "user", content: "Hello" }],
  }),
});

Python
import os, json, urllib.request
req = urllib.request.Request(
    "https://openrouter.ai/api/v1/chat/completions",
    data=json.dumps({"model": "google/gemini-3.8-flash-tts", "messages": [{"role": "user", "content": "Hello"}]}).encode(),
    headers={"Authorization": "Bearer " + os.environ["OPENROUTER_API_KEY"], "Content-Type": "application/json"},
)
print(urllib.request.urlopen(req).read().decode())

JSON · History JSON