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Models / Google

Gemini 3.1 Flash-Lite

GA

Listed as Stable on the models overview. Output: text only. Audio input priced higher: input $0.25 (text/image/video) / $0.50 (audio); cached input $0.025 (text/image/video) / $0.05 (audio) per 1M tokens. Deprecations page lists release 2026-05-07, shutdown 2027-05-07 and, as of 2026-08-02, a recommended replacement of gemini-3.5-flash-lite (added to the catalog the same day; the earlier note here saying no replacement was yet named was true of the table when read on 2026-07-31 and is superseded). It is the recommended replacement for gemini-2.5-flash-lite and the gemini-2.0-flash-lite line.

Gemini 3.1 Flash-Lite by Google costs $0.25 per 1M input tokens and $1.50 per 1M output tokens ($0.563/1M blended), with a 1.0M (1.048.576-token) context window. It is scheduled for retirement, shutting down 7 May 2027; the recommended replacement is Gemini 3.5 Flash-Lite.

Last verified: 13 Aug 2026 · sourced from official provider documentation

Lifecycle warning

This model is deprecated. Scheduled shutdown: 7 May 2027. Recommended migration: Gemini 3.5 Flash-Lite.

Provider
Google
Status
GA
Input price
$0.25 / 1M tokens
Output price
$1.50 / 1M tokens
Cached input
$0.025 / 1M tokens
Blended price
$0.563 / 1M tokens
Context window
1.048.576 tokens (1.0M)
Max output
65.536 tokens
Modality
text, image, video, audio, pdf
Open weights
No — API only
Knowledge cutoff
2025-01
Released
7 May 2026
API string
gemini-3.1-flash-lite

Source: Google official documentation ↗

See also

Compare Gemini 3.1 Flash-Lite head-to-head

Gemini 3.1 Flash-Lite vs Gemini 3.5 Flash→

$0.563 vs $3.38 blended /M · same family

Gemini 3.1 Flash-Lite vs Gemini 3.5 Flash-Lite→

$0.563 vs $0.85 blended /M · same family

Gemini 3.1 Flash-Lite vs Gemini 3.6 Flash→

$0.563 vs $3 blended /M · same family

FAQ

Gemini 3.1 Flash-Lite — questions & answers

How much does Gemini 3.1 Flash-Lite cost?

Gemini 3.1 Flash-Lite is priced at $0.25 per 1M input tokens and $1.50 per 1M output tokens ($0.563/1M blended at a 3:1 input-to-output ratio), with cached input at $0.025 per 1M tokens.

What is the context window of Gemini 3.1 Flash-Lite?

Gemini 3.1 Flash-Lite has a 1.048.576-token context window (1.0M), with up to 65.536 output tokens per request.

Is Gemini 3.1 Flash-Lite being deprecated or retired?

Gemini 3.1 Flash-Lite is scheduled for retirement. Its scheduled shutdown date is 7 May 2027. The recommended migration is Gemini 3.5 Flash-Lite.

Does Gemini 3.1 Flash-Lite support image or vision input?

Yes — Gemini 3.1 Flash-Lite accepts image input. Listed modalities: text, image, video, audio, pdf.

Can I self-host Gemini 3.1 Flash-Lite?

No — Gemini 3.1 Flash-Lite is proprietary. Its weights are not publicly released, so it is available only through Google's API (or hosted partners), not for self-hosting.

What is the API model string for Gemini 3.1 Flash-Lite?

The API model identifier for Gemini 3.1 Flash-Lite is "gemini-3.1-flash-lite" when calling Google's API.

What is Gemini 3.1 Flash-Lite's knowledge cutoff?

Gemini 3.1 Flash-Lite's training knowledge cutoff is Jan 2025.