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Moonshot

Kimi K3 (batch)

moonshotai/kimi-k3:batch

Kimi K3 is a 2.8T parameter open-weight multimodal reasoning model from Moonshot AI.

$2.508 in · $12.54 out per 1M tokens1M contextJul 16, 2026

about 0.8¢ a message

A typical message: about 500 tokens you send and 500 it writes.

Chat with Kimi K3 (batch)
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Also:Kimi K3

Spec sheet

Published facts from the catalog, billed prices and what we measured here. Anything not measured says so.

Price, billed here

Input, per 1M tokens
$2.508provider $2.28
Output, per 1M tokens
$12.54provider $11.40
Cached input, per 1M
$0.2508provider $0.228
Margin
+10%

Context and formats

Context window
1,048,576 tokens
Longest answer
16,384 tokens
Reads
text, images, and video
Makes
text
First listed
2026-07-16

Measured here, last 7 days

First token, median
not measured
Answered without error
not measured

Tools and JSON

Tool calling
declaredthe provider's claim, not yet measured here
JSON output
declaredthe provider's claim, not yet measured here

Price and latency history as JSON: GET /api/planet/history?id=moonshotai/kimi-k3:batch.

About

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...

In Moonshot's words.

Try it here

The answer appears here.

Measured here

Call it

Use one OpenAI compatible endpoint, this model's id and an am_live_ key from the dashboard. You can also try it in chat first with no key.

curl https://useantimatter.com/v1/chat/completions \
  -H "Authorization: Bearer $ANTIMATTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "moonshotai/kimi-k3:batch", "messages": [{"role": "user", "content": "Hello"}]}'

Everything else is in the docs.

Embed this

A badge showing this model's live price per million tokens, as billed here, for a README or a site. It links back to this page.

Kimi K3 (batch) price on Antimatter
<a href="https://useantimatter.com/planet/moonshotai/kimi-k3%3Abatch"><img src="https://useantimatter.com/api/badge/price?id=moonshotai%2Fkimi-k3%3Abatch" alt="Kimi K3 (batch) price on Antimatter" height="28"></a>

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