#157

Gemini 3.1 Flash Lite Preview

Google Release: 2026-03-03 Tested on: 2026-08-14 02:43 google/gemini-3.1-flash-lite-preview::none

~150B total (~10B active)MoEClosedEstimated

(high) (medium) (low) (none)

Summary

Gemini 3.1 Flash Lite Preview scores 6.4 on AI BENCHY and ranks #157. It has 10.0 reliability, a 57.6% pass rate, $0.052 total cost, and 1.56s average response time.

What makes Gemini 3.1 Flash Lite Preview unique: It is notably fast compared with similar models.

Identity note

Gemini 3.1 Flash Lite Preview was the preview version of Google: Gemini 3.1 Flash Lite.

Model facts

Researched on 2026-08-12

Estimated

Parameters: ~150B total (~10B active)
Architecture: MoE
Availability: Closed
License: -

Best estimate from public evidence; the vendor did not disclose every value. Google does not disclose parameter counts.

Parameter source Availability source

Score

6.4

Consistency

9.7

Reliability

10.0

Total Cost (Current Price)

$0.052

Total Output Tokens

14,161

Total Input Tokens

120,955

Input Price

$0.250 / 1M

Output Price

$1.500 / 1M

Tests Correct

Wrong Tests: 10

Attempt pass rate: 57.6%

Flaky tests

Flaky tests had mixed outcomes across runs (at least one pass and one fail).

Response Time (avg)

1.56s

Response Time (max): 9.27s

Response Time (total): 34.32s

Wrong answer: 7 Did not follow instructions: 2 No answer: 1

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#157 Gemini 3.1 Flash Lite Preview

none

Cost: $0.003
Time: 4.7s
Tokens: 1,827 tok

Run history

Tested on	Score	Reliability	Total Cost	Compare
2026-08-14 02:43 Re-test	6.4	10.0	$0.052	Current run
2026-07-16 22:52 New test added	6.4	10.0	$0.052	Compare
2026-06-04 14:00 New test added	7.2	10.0	$0.018	Compare
2026-05-22 00:27 Suite changed	7.5	10.0	$0.017	Compare
2026-04-11 01:44 First recorded run	7.9	N/A	$0.016	Compare

This run used a different benchmark suite. Keep suite changes in mind when reading historical movement.

Run comparison

Run	Benchmark coverage	Score	Consistency	Reliability	Tests Correct	Flaky tests	Total Output Tokens	Total Input Tokens	Total Cost	Response Time (avg)
2026-08-14 02:43 · Current run	66/66 attempts	6.4	9.7	10.0	12/22	1	14,161	120,955	$0.052	1.56s
2026-06-04 14:00 · New test added	63/63 attempts	7.2	9.7	10.0	12/21	1	5,547	37,582	$0.018	1.21s
Difference	—	-0.8	0.0	0.0	0	0	+8614	+83373	+$0.034	+348ms

Benchmark coverage differs: 66/66 attempts (Target: 3 repeats per test) versus 63/63 attempts (Target: 3 repeats per test). Totals and repeat-sensitive metrics are not directly comparable.

These two runs used different benchmark suites, so the deltas reflect both model changes and suite changes.

Price History

Historical pricing data for this model from OpenRouter.

Date	Input Price	Output Price
2026-08-14 12:51	$0.250 / 1M	$1.500 / 1M

Charts

Choose the first model, then click a second model to open a side-by-side page.

Top Models by Score

Score vs Total Cost

Response Time (avg)

Score vs Response Time (avg)

Total Output Tokens

Score vs Total Output Tokens

Quick Compare

Category Breakdown

Category	Score	Consistency
Anti-AI Tricks	7.5	8.4
Coding	5.5	10.0
Combined	3.0	10.0
Data parsing and extraction	10.0	10.0
Domain specific	5.3	10.0
General Intelligence	4.0	10.0
Instructions following	10.0	10.0
Puzzle Solving	10.0	10.0
Tool Calling	10.0	10.0
Trivia	3.0	10.0

Gemini 3.1 Flash Lite Preview

Model facts

Hamster playing table tennis

#157 Gemini 3.1 Flash Lite Preview

Charts

Top Models by Score

Score vs Total Cost

Response Time (avg)

Score vs Response Time (avg)

Total Output Tokens

Score vs Total Output Tokens

Quick Compare

Category Breakdown

Compared models