Models

Gemini 3.1 Flash Lite vs Kimi K3

Compare Gemini 3.1 Flash Lite from Google and Kimi K3 from Moonshot AI on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the AIHubMix API.

GoogleGemini 3.1 Flash LiteMoonshot AIKimi K3
Google logo
Gemini 3.1 Flash Lite
Google · text, image, audio, video → text

gemini-3.1-flash-lite is currently Google's latest and most cost-effective model, optimized for large-scale agent-based tasks, translation, and simple data processing.

Input$0.25 /M
Output$1.5 /M
10% off
Moonshot AI logo
Kimi K3
Moonshot AI · text, image, video → text

Kimi K3 is Kimi’s flagship model for long-horizon coding and end-to-end knowledge work, with a 1M-token context window and industry-leading intelligence.

Input$3$2.7 /M
Output$15$13.5 /M
Cache read$0.3$0.27 /M

Pricing & Specifications

Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.

Gemini 3.1 Flash Lite
Kimi K3
Input /M
$0.25
$3$2.710%
Output /M
$1.5
$15$13.510%
Cache read /M
-
$0.3$0.2710%
Context length
1,000,000
1,048,576
Max output
64,000
1,048,576
Time to First Token
0.8 s
0.9 s
Throughput
75.3 tok/s
73.1 tok/s
Modalities
textimageaudiovideo
textimagevideo
Supported Parameters
thinkingtoolsfunction callingstructured outputswebdeepsearchlong context
thinkingfunction callingstructured outputs
API Formats
chat_completions · gemini_api · claude_api
Released
-
-

Promotional prices show the discounted rate; see each model page for promotion windows.

Activity Past 30 Days

Daily traffic served through AIHubMix — how demand for each model is trending.

gemini-3.1-flash-litekimi-k3

Tokens / day

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Requests / day

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Performance Past 3 Days

Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.

gemini-3.1-flash-litekimi-k3

Throughput (tok/s)

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TTFT (s)

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Uptime (%)

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LMArena Benchmarks

LMArena ratings by capability (Bradley-Terry, commonly called Elo). Higher is better.

Text
gemini-3.1-flash-litekimi-k3
1380144015001560
Overall
14321486
Coding
14571531
Math
14381438
Hard prompts
14451505
Instruction following
14071479
Multi-turn
14361499
Creative writing
14131470
Longer query
14281502
Chinese
14781527
English
14331491

Source: LMArena (arena.ai) leaderboard, imported by AIHubMix. Models without published ratings are omitted per chart.

Cost calculator

Estimate your monthly bill for the same workload on each model.

Gemini 3.1 Flash Lite
$37.50 /mo
Kimi K3
$405$365 /mo

Monthly = daily × 30. Discounted rates applied where a promotion is active.

FAQ

Which is cheaper: Gemini 3.1 Flash Lite, Kimi K3?

Gemini 3.1 Flash Lite: $1.5/M output tokens; Kimi K3: $13.5/M. Use the cost calculator above to estimate your own workload.

How do their coding arena scores compare?

Kimi K3: 1531; Gemini 3.1 Flash Lite: 1457 (LMArena coding leaderboard).

Which responds faster?

Gemini 3.1 Flash Lite: 0.8s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.

How large is each context window?

Gemini 3.1 Flash Lite accepts 1,000,000 and Kimi K3 accepts 1,048,576 input tokens. Maximum output per request is 64,000 tokens on Gemini 3.1 Flash Lite and 1,048,576 tokens on Kimi K3.

Which one generates tokens faster?

Gemini 3.1 Flash Lite at 75.3 tok/s and Kimi K3 at 73.1 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.

What inputs and capabilities does each model support?

Gemini 3.1 Flash Lite accepts text, image, audio and video input and supports thinking, tool calling, function calling, structured outputs, web search, deep search and long context; Kimi K3 accepts text, image and video input and supports thinking, function calling and structured outputs.

Can I call Gemini 3.1 Flash Lite and Kimi K3 with the same API key?

Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.

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