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Moonshot

Kimi K2 0905

moonshotai/kimi-k2-0905

Kimi K2 0905 is the September update of Kimi K2 0711.

$0.66 in · $2.75 out per 1M tokens262k contextSep 4, 2025

about 0.2¢ a message

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

Chat with Kimi K2 0905
Call it from codeLock this price

Also:Kimi K2 0711

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
$0.66provider $0.60
Output, per 1M tokens
$2.75provider $2.50
Margin
+10%

Context and formats

Context window
262,144 tokens
Longest answer
98,304 tokens
Reads
text
Makes
text
First listed
2025-09-04

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-k2-0905.

About

Kimi K2 0905 is the September update of Kimi K2 0711. It is a large-scale Mixture-of-Experts (MoE) language model developed by Moonshot AI, featuring 1 trillion total parameters with 32...

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-k2-0905", "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 K2 0905 price on Antimatter
<a href="https://useantimatter.com/planet/moonshotai/kimi-k2-0905"><img src="https://useantimatter.com/api/badge/price?id=moonshotai%2Fkimi-k2-0905" alt="Kimi K2 0905 price on Antimatter" height="28"></a>

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