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Gemini 3.8 Flash-Lite TTS

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google-deepmind/gemini-3.8-flash-lite-tts · by Google DeepMind · audio-native-transformer

Pricing — 1 offering(s)

Google DeepMind

Text input tokens

  • $0.50 / 1M tokens (input) Current 2026-09-23 → present
    Standard (paid tier) text input rate. Introductory rate through 2026-12-31; Google's pricing page lists a…

    Standard (paid tier) text input rate. Introductory rate through 2026-12-31; Google's pricing page lists a step-up to $1.00/1M from 2027-01-01 — not yet in effect, so no forward-dated row is added ahead of it (same convention as modelglass-llm's gemini-3-8-flash-google-deepmind). effective_from = launch date (2026-09-23): the Wayback Machine's pricing-page captures show the model absent on 2026-09-22 17:49 UTC and listed at this rate by 2026-09-24 05:47 UTC.

Audio output tokens

  • $6.00 / 1M tokens (output) Current 2026-09-23 → present
    Standard (paid tier) audio output rate; Google states it as equivalent to $0.0015 per 10s of audio (25 audio…

    Standard (paid tier) audio output rate; Google states it as equivalent to $0.0015 per 10s of audio (25 audio tokens per second). Introductory rate through 2026-12-31; steps up to $12.00/1M ($0.003 per 10s) from 2027-01-01 — not yet in effect, no forward-dated row.

Batch text input tokens

  • $0.25 / 1M tokens (input) Current 2026-09-23 → present
    Batch API rate (secondary tier per the SCO-640 headline rule — never the list price). Introductory through…

    Batch API rate (secondary tier per the SCO-640 headline rule — never the list price). Introductory through 2026-12-31; $0.50/1M from 2027-01-01, not yet in effect.

Batch audio output tokens

  • $3.00 / 1M tokens (output) Current 2026-09-23 → present
    Batch API rate (secondary tier per the SCO-640 headline rule). Introductory through 2026-12-31; $6.00/1M from…

    Batch API rate (secondary tier per the SCO-640 headline rule). Introductory through 2026-12-31; $6.00/1M from 2027-01-01, not yet in effect.

Showing the active price and any recorded history. Full pricing history is available via the paid API — see API docs.

See how Gemini 3.8 Flash-Lite TTS fits into a cost-aware routing setup

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Capability profile

How Gemini 3.8 Flash-Lite TTS rates across core capability dimensions, with the task-level evidence behind each rating.

voice naturalness Unknown

Google positions it for high throughput, low latency and cost efficiency rather than maximum fidelity. No independent naturalness score found as of 2026-09-27; not rated on vendor positioning alone.

voice variety Strong

30 prebuilt studio voices, plus an Extended Voice Library of hundreds more (GET /v1beta/voices) and Voice design personas generated from a text description (Google's speech-generation guide).

cloning support Strong

Voice replication from reference plus consent audio, stored persistently (up to 200 custom voices per project, 1-year retention) or as stateless client-held keys (Google's speech-generation guide).

language support Strong

101 languages per Google's model page, with automatic input-language detection.

streaming latency Unknown

Streaming supported (headerless 16-bit PCM at 24 kHz); Google publishes no time-to-first-audio figure.

Ratings are estimated — limited independent data is available for this model.

Operator guidance

Default Gemini TTS pick for cost-sensitive, high-volume or latency-sensitive speech ($6 vs $9 per 1M audio output tokens against Gemini 3.8 Flash TTS, introductory rates). Switching to Flash TTS is a one-parameter change, so step up only for narration, multi-speaker acting or the extra dialect coverage.

Use cases

Limitations

Citations