Models

Gemini 3 Flash Preview vs Kimi K3

Compare Gemini 3 Flash Preview 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 Flash PreviewMoonshot AIKimi K3
Google logo
Gemini 3 Flash Preview
Google · text, image, audio → text

gemini-3-flash-preview is Google's latest released, most balanced model, excelling in speed, scale, and cutting-edge intelligence.

Input$0.50 /M
Output$3.00 /M
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$3.00 /M
Output$15.00 /M

Pricing & Specifications

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

Gemini 3 Flash Preview
Kimi K3
Input /M
$0.50
$3.00
Output /M
$3.00
$15.00
Cache read /M
$0.05
$0.30
Context length
1,048,576
1,048,576
Max output
0
1,048,576
Time to First Token
4.0 s
0.9 s
Throughput
166.4 tok/s
73.1 tok/s
Modalities
textimageaudio
textimagevideo
Supported Parameters
thinkingwebtoolsfunction callingstructured outputs
thinkingfunction callingstructured outputs
API Formats
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-flash-previewkimi-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-flash-previewkimi-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-flash-previewkimi-k3
1440148015201560
Overall
14731486
Coding
15091531
Math
14761476
Hard prompts
14921505
Instruction following
14581479
Multi-turn
14831499
Creative writing
14591470
Longer query
14751502
Chinese
15211527
English
14751491

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 Flash Preview
$75.00 /mo
Kimi K3
$405 /mo

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

FAQ

Which is cheaper: Gemini 3 Flash Preview, Kimi K3?

Gemini 3 Flash Preview: $3.00/M output tokens; Kimi K3: $15.00/M. Use the cost calculator above to estimate your own workload.

How do their coding arena scores compare?

Kimi K3: 1531; Gemini 3 Flash Preview: 1509 (LMArena coding leaderboard).

Which responds faster?

Kimi K3: 0.9s 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 Flash Preview accepts 1,048,576 and Kimi K3 accepts 1,048,576 input tokens.

Which one generates tokens faster?

Gemini 3 Flash Preview at 166.4 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 Flash Preview accepts text, image and audio input and supports thinking, web search, tool calling, function calling and structured outputs; Kimi K3 accepts text, image and video input and supports thinking, function calling and structured outputs.

Can I call Gemini 3 Flash Preview 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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