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Kimi K3

A very large downloadable model for complicated programming and long jobs.

Last updated October 16, 2026.

Costs here use the prices AI companies charge software developers, so they show relative cost, not your monthly bill. See what ChatGPT, Claude and Gemini charge you.

Made by Moonshot AI. Free to download.

What it costs

1,000-word essay: $0.02 (about 2 cents)
100 chat messages: $0.61 (about 61 cents)
50-page PDF summary: $0.02 (about 2 cents)

Based on list prices and the assumptions on How we work. Your real cost will differ.

At a glance

Smartness: ★★★★☆ (4 of 5) (our banding of the Artificial Analysis score, where available)
Reads at once: about 1,570 pages (rule of thumb)
Understands: text, pictures, video
Free to download and run yourself: Yes
Free to use: Not free for developers. Free app plans

Best for

complicated codinglong jobs

Watch out for

Replies cost a lot for a downloadable model on the current listing. Check the price before committing.

Appears in

Frequently asked

How much does Kimi K3 cost to use?
A 1,000-word essay costs about $0.02 (about 2 cents); summarizing a 50-page PDF about $0.02 (about 2 cents). These are developer (API) prices, not an app subscription.

What is Kimi K3 best for?
A very large downloadable model for complicated programming and long jobs.

How much can Kimi K3 read at once?
About 1,570 pages (a rule of thumb: 1,048,576 tokens at roughly 500 words a page).

Can I download Kimi K3 for free?
Yes, the model files are published, though running a large one needs powerful hardware.

Under the hood

Maker	Moonshot AI
Price per 1M input tokens	$0.30
Price per 1M output tokens	$11.94
Context size	1.05M tokens (1,048,576)
Artificial Analysis Intelligence Index	43.6 (source, via OpenRouter)
Open weights	Yes (Hugging Face: moonshotai/Kimi-K3)
Speed	Not measured yet
Listed	2026-07-16

Maker's description (technical)

Kimi K3 is a 2.8T parameter open-weight multimodal reasoning model from Moonshot AI. It is suited for complex coding, knowledge work, and long-horizon agentic workflows, and is particularly strong at...

View on OpenRouter. Our verdict above is editorial, not benchmarked by us.