AI model comparison

Gemini 3.1 Flash Lite vs Kimi K2 0905

Pricing, context window, benchmarks, and features compared side by side. Or skip the guesswork and send one prompt to both.

Gemini 3.1 Flash Lite is Google’s GA high-efficiency multimodal model optimized for low-latency, high-volume workloads.

Input / 1M
$0.25
Output / 1M
$1.50
Context
1.05M
moonshotai logo

Moonshot AI

Kimi K2 0905

Kimi K2 0905 is the September update of [Kimi K2 0711](moonshotai/kimi-k2).

Input / 1M
$0.60
Output / 1M
$2.50
Context
262K

At a glance

Quick verdict

How the two models stack up on the things people ask about most.

Lower price

google logo

Gemini 3.1 Flash Lite

2.0x cheaper for a typical chat

Higher intelligence score

google logo

Gemini 3.1 Flash Lite

15.6 vs 15.3 on Artificial Analysis

Larger context window

google logo

Gemini 3.1 Flash Lite

1.05M vs 262K tokens

Newer release

google logo

Gemini 3.1 Flash Lite

Released May 7, 2026

Benchmarks

Benchmark scores

Independent scores from Artificial Analysis. Higher is better.

Intelligence index

google logoGemini 3.1 Flash Lite15.6
moonshotai logoKimi K2 090515.3

Coding index

google logoGemini 3.1 Flash Lite34.7
moonshotai logoKimi K2 0905Not available

Agentic index

google logoGemini 3.1 Flash Lite1.6
moonshotai logoKimi K2 0905Not available

Pricing

Gemini 3.1 Flash Lite vs Kimi K2 0905 API pricing

Per-token API rates. Cheaper option highlighted.

Metricgoogle logoGemini 3.1 Flash Litemoonshotai logoKimi K2 0905
Input tokensPer 1M tokens$0.25$0.60
Output tokensPer 1M tokens$1.50$2.50
Cached input (read)Per 1M tokens$0.03Not available
Cache writePer 1M tokens$0.08Not available
Web searchPer request$0.014Not available

What it costs in practice

Estimated cost per 1,000 requests at standard rates. Coding and long-document figures also show the cost when the input is already cached.

Chat message

2K in, 500 out

google logoGemini 3.1 Flash Lite$1.25
moonshotai logoKimi K2 0905$2.45

Coding task

30K in, 4K out

google logoGemini 3.1 Flash Lite$13.50$6.75 cached
moonshotai logoKimi K2 0905$28

Long document summary

150K in, 2K out

google logoGemini 3.1 Flash Lite$40.50$6.75 cached
moonshotai logoKimi K2 0905$95

Specs

Context window and capabilities

How much each model can read, how much it can write, and what it accepts as input.

Metricgoogle logoGemini 3.1 Flash Litemoonshotai logoKimi K2 0905
Context window1.05M tokens262K tokens
Max output66K tokens98K tokens
Input typesAudio, File, Image, Text, VideoText
Output typesTextText
Reasoning effort levelsHigh, Medium, Low, MinimalNot available
Default reasoning effortMinimalNot available
Release dateMay 7, 2026September 4, 2025

Features

Supported features

API features available for each model.

Metricgoogle logoGemini 3.1 Flash Litemoonshotai logoKimi K2 0905
Tool callingSupportedSupported
Structured outputsSupportedSupported
JSON modeSupportedSupported
ReasoningSupportedNot supported
TemperatureSupportedSupported
Stop sequencesSupportedSupported
Deterministic seedSupportedSupported
Verbosity controlNot supportedNot supported

Our take

Gemini 3.1 Flash Lite is 2.0x cheaper for a typical chat. Gemini 3.1 Flash Lite scores higher on the Artificial Analysis Intelligence Index (15.6 vs 15.3). Gemini 3.1 Flash Lite has the larger context window (1.05M vs 262K tokens). The right pick depends on your workload, so the quickest way to settle it is to send the same prompt to both and compare.

FAQ

Frequently asked questions

Is Gemini 3.1 Flash Lite or Kimi K2 0905 cheaper?

Gemini 3.1 Flash Lite is cheaper for a typical chat (2K input tokens and 500 output tokens). Gemini 3.1 Flash Lite costs $0.25 per 1M input tokens and $1.50 per 1M output tokens, while Kimi K2 0905 costs $0.60 per 1M input tokens and $2.50 per 1M output tokens.

Which has a bigger context window, Gemini 3.1 Flash Lite or Kimi K2 0905?

Gemini 3.1 Flash Lite supports up to 1.05M tokens of context, compared with 262K for Kimi K2 0905.

Is Gemini 3.1 Flash Lite smarter than Kimi K2 0905?

On the Artificial Analysis Intelligence Index, Gemini 3.1 Flash Lite scores 15.6 and Kimi K2 0905 scores 15.3, putting Gemini 3.1 Flash Lite ahead. Benchmarks don't capture everything, so the best test is running your own prompts through both.

Can I use Gemini 3.1 Flash Lite and Kimi K2 0905 at the same time?

Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see Gemini 3.1 Flash Lite and Kimi K2 0905 answer side by side and keep the better response.

google logomoonshotai logo

Why choose? Ask both.

Send one prompt to Gemini 3.1 Flash Lite and Kimi K2 0905 at the same time. Compare the answers side by side and keep the best one.