# Gemini 3.1 Flash-Lite

Gemini 3.1 Flash-Lite is an AI model released by Google on Mar 3 2026. At release it scored 11% on BullshitBench v2.

## Facts

| Field | Value |
| --- | --- |
| Model | Gemini 3.1 Flash-Lite |
| Developer | Google |
| Release date | Tuesday, Mar 3 2026 |
| Licensing | Proprietary |

## API pricing

All rates in USD per 1,000,000 tokens, pay-as-you-go.

| Tier | Input | Cached input | Output |
| --- | --- | --- | --- |
| Standard text/image/video | $0.25 | $0.025 | $1.50 |

Output prices include reasoning tokens.
Verified August 18, 2026 against the first-party source: https://ai.google.dev/gemini-api/docs/pricing

## Benchmark scores published at release

| Benchmark | Score | Source | What it measures |
| --- | --- | --- | --- |
| BullshitBench v2 | 11% | Lab | Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. |

## Questions and answers

### When was Gemini 3.1 Flash-Lite released?

Gemini 3.1 Flash-Lite was released by Google on Tuesday, Mar 3 2026.

### Who made Gemini 3.1 Flash-Lite?

Gemini 3.1 Flash-Lite was built by Google. Builds the Gemini family of models through Google DeepMind. Integrates AI across Google products.

### How much does Gemini 3.1 Flash-Lite cost?

Gemini 3.1 Flash-Lite costs $0.25 per million input tokens and $1.50 per million output tokens through the Google API. Cached input is $0.025 per million tokens. Output prices include reasoning tokens. Rates are pay-as-you-go API prices verified against Google's published pricing on August 18, 2026.

### What benchmark scores did Gemini 3.1 Flash-Lite get?

Gemini 3.1 Flash-Lite reports 1 tracked benchmark score — BullshitBench v2: 11%. Scores are the figures published at release by Google.

### Is Gemini 3.1 Flash-Lite open source?

No. Gemini 3.1 Flash-Lite is a proprietary model. The weights are not published — it is available only through the provider's own API, apps, or partner platforms.

### What came before and after Gemini 3.1 Flash-Lite?

Google's previous tracked release was Gemini 3.1 Pro on Feb 19 2026, 12 days earlier. It was followed by Gemma 4 on Apr 2 2026.


---

Canonical page: https://aireleasetracker.com/model/google/gemini-3.1-flash-lite
Full dataset: https://aireleasetracker.com/llms-full.txt · JSON: https://aireleasetracker.com/models.json
Source: AI Release Tracker (https://aireleasetracker.com). Benchmark scores are the figures published by the releasing lab at launch.