The Known Good Updated 9 Sep 2026 Subscribe
Google ·Proprietary ·Released March 2026·Tracked since 25 Jul 2026

Google: Gemini 3.1 Flash Lite Preview — quality, speed & price analysis

Compare with another model Provider benchmarks Data sources
Quality
unranked
Known Good Index
Speed
#29 of 341
122.7
Output tokens per second
Price
#179 of 450
$0.56
Blended per 1M tokens
In $0.25 · Out $1.50
Cache hit price
#74 of 344
$0.025
per 1M tokens (−90%)
Context
#64 of 487
1.05M
tokens (~1,600 pages)
Summary

Google: Gemini 3.1 Flash Lite Preview does not yet carry a Known Good Index score — the index needs at least one science, one mathematics and one coding result. It accepts text, image, video, file, audio input, outputs text, and supports a 1.05M-token context window.

Pricing is $0.25 per 1M input tokens (below the $2.09 average) and $1.50 per 1M output (below the $9.59 average). Cached input reads at $0.025 per 1M, a 90% discount on its input price. At 123 tokens per second it sits in the fastest quarter of the models we track.

Generated from tracked data on 9 Sep 2026 · how these comparisons are computed →

Technical specifications
ReasoningYes
Input modalitytext, image, video, file, audio
Output modalitytext
Context window1,048,576 tokens
Max output65,536 tokens
WeightsProprietary
Knowledge cutoffJanuary 2025
Tool callingYes
Providers1 host · compare →
Highlights — where Google: Gemini 3.1 Flash Lite Preview sits
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Models shown

Quality

How Google: Gemini 3.1 Flash Lite Preview compares against every tracked model

Known Good IndexCodingMathematicsReasoning
Known Good Index

Composite of GPQA Diamond, Mock AIME 2024–25, MATH Level 5, SWE-bench Verified, LiveBench, Humanity's Last Exam and Terminal-Bench, normalised 0–100. Scores are ingested from Epoch AI; we do not run these evaluations. This model is not in this ranking: it holds no Known Good Index score.

💡 A lightbulb marks a model its provider publishes as a reasoning model
The Known Good

Quality Breakdown

Google: Gemini 3.1 Flash Lite Preview on each evaluation feeding the index, against the tracked average

Evaluation scores

Bar = Google: Gemini 3.1 Flash Lite Preview · grey marker = average across tracked models · scores ingested from Epoch AI

Humanity's Last Exam9 / 17
The Known Good

Arena Elo

Human preference rating from blind pairwise votes

Text Arena

Elo from blind pairwise votes, ingested from Arena

1415
Elo · 95% CI ±4
#118
of 408 ranked models
60k
votes counted
1432
style-controlled (#95)

Ingested 9 Sep 2026.

The Known Good

Price & Cost

Published API pricing by token type

BlendedInput vs outputQuality per dollar
Blended Price

USD per 1M tokens at a 3:1 input:output blend. Live from OpenRouter, cross-checked against models.dev. Lower is better. Ranked against the 450 models priced above zero, which is the population the chart draws; excludes 32 published at no cost (free and promotional tiers).

The Known Good
We publish blended price rather than cost-per-task. Cost-per-task requires token counts from an evaluation suite we do not run. Blended price is computed from published rates and is fully reproducible — see the pricing methodology.

Context Window

Maximum input tokens accepted

Context windowMax output tokens
Context Window

Maximum input context from provider metadata via models.dev and OpenRouter. Higher is better.

The Known Good

Speed

Mean output throughput across hosting providers, over successful measurements from the last 48 hours

Output speedBy provider

Latency

Time to first token, mean across providers over successful measurements from the last 48 hours

Latency (TTFT)

Seconds to first streamed chunk, mean across tracked providers over successful measurements from the last 48 hours. Derived from OpenRouter endpoint telemetry. Lower is better.

The Known Good

Providers

Hosts serving Google: Gemini 3.1 Flash Lite Preview, with their own price and speed

1 provider
Full provider benchmarks →
ProviderInput $/MOutput $/M BlendedSpeedTTFTContext
Google AI Studio $0.12 $0.75 $0.28 106 1.5s 1.05M

Per-host pricing and telemetry from OpenRouter. Speed is output tokens per second; TTFT is time to first token.

The Known Good

History

How price and quality have moved since we began tracking this model

Quality & price over time

Since 25 Jul 2026

Known Good Index
Blended price $0.56 per 1M · observed 9 Sep 2026
Output speed 123 tok/s · observed 9 Sep 2026
Time to first token 1.1s

No recorded changes for this model since tracking began.

The Known Good

Comparisons

Head-to-head pages pairing Google: Gemini 3.1 Flash Lite Preview with other tracked models

Head-to-head pages are generated for the top 50 models by Known Good Index, which Google: Gemini 3.1 Flash Lite Preview is not currently in. Its nearest tracked models by index are below.

Browse all comparisons →
Sources for this page
Pricing & providers — OpenRouter Metadata — models.dev Benchmarks — Epoch AI (CC-BY 4.0)Elo — Arena Full attribution →