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Pricing · Kimi

Kimi K3 pricing: API price, cost per message and plans

What Kimi K3 costs, three ways: Moonshot's API price per token, what Kimi K3's replies actually cost in our test runs, and how many Kimi K3 messages each llmwise plan includes. Every limit on Kimi K3 is on its model page.

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API prices checked against OpenRouter's Kimi K3 page. Updated .

Short answer

Kimi K3's API price is $3.00 per million input tokens and $15.00 per million output tokens (Moonshot's list price, September 2026). In our 50 test runs a Kimi K3 reply cost $0.0039 on average (median $0.0035), from $0.0015 a reply on RAG and answering from documents to $0.0068 on data analysis. In llmwise you pay per message instead: up to 125 Kimi K3 messages a month on Pro ($20), 400 on Max ($50), 900 on Ultra ($100) and 2,000 on Studio ($200).

Kimi K3 API pricing

Kimi K3 through its API is billed per token: $3.00 in, $15.00 out per million tokens, as of September 2026.

Kimi K3 API price
Input tokens$3.00 per million
Output tokens$15.00 per million
A typical Kimi K3 message (4,000 in, 700 out)$0.0225
1,000 typical Kimi K3 messages$22.50
Typical Kimi K3 messages for $144
Whose priceMoonshot's list price

What a Kimi K3 reply cost in our test runs

We sent the same 50 test prompts to every model in llmwise on September 27, 2026, through OpenRouter with llmwise's own prompt and settings. Here's what each Kimi K3 reply cost, job by job.

What a Kimi K3 reply cost in our test runs, job by job
JobKimi K3, per replyPer 1,000 repliesTokens in / outPassed
Coding$0.0063$6.32574 / 3515 of 5
Writing$0.0038$3.83486 / 1664 of 5
Math$0.0037$3.74483 / 2255 of 5
Summarization$0.0034$3.43585 / 1883 of 5
Data analysis$0.0068$6.79667 / 5035 of 5
Customer support$0.0046$4.55608 / 2774 of 5
Translation$0.0036$3.58524 / 2235 of 5
SQL$0.0024$2.37586 / 905 of 5
RAG and answering from documents$0.0015$1.46736 / 965 of 5
Agents and tool use$0.0027$2.70562 / 1035 of 5
Each Kimi K3 cost is the average of what OpenRouter charged us for its replies to one job's prompts; tokens out include any reasoning. Passed: how many of those Kimi K3 replies passed their check. In llmwise a Kimi K3 message isn't billed by the token.

Across all 50 Kimi K3 replies: $0.0039 on average, $0.0035 at the median, $0.00086 for the cheapest and $0.0131 for the dearest. The Kimi K3 replies averaged 581 tokens in and 222 out, against the typical message's 4,000 in and 700 out: each test prompt starts a new chat, while a reply deep in a long chat rereads all of it.

Every prompt, and how each reply is scored.

Kimi K3 on each llmwise plan

In llmwise a Kimi K3 message is one of a published count, however long the reply runs, and you see what's left before you send.

  • Free: Kimi K3 is in the one-time trial of 5 messages, no card needed.

  • Pro, $20 a month: up to 125 Kimi K3 messages a month, which is $0.16 a Kimi K3 message if every message goes to Kimi K3.

  • Max, $50 a month: up to 400 Kimi K3 messages a month, which is $0.13 a Kimi K3 message if every message goes to Kimi K3.

  • Ultra, $100 a month: up to 900 Kimi K3 messages a month, which is $0.11 a Kimi K3 message if every message goes to Kimi K3.

  • Studio, $200 a month: up to 2,000 Kimi K3 messages a month, which is $0.10 a Kimi K3 message if every message goes to Kimi K3.

  • A $10 top-up adds up to 100 Kimi K3 messages, valid 12 months.

Every limit is published. Paid plans also have a monthly fair-use limit on AI cost: Pro $7.50, Max $20, Ultra $42, Studio $85. Using every message on your plan at typical sizes stays under it; very large messages and heavy research use it faster. Every limit, explained.

Kimi K3 against the models nearest its price

Kimi K3 is the only Kimi model in llmwise, so here it is beside the two models whose typical message costs nearest its own.

Kimi K3 beside the models nearest its price
ModelAPI, per 1M in / outInput price against Kimi K3Average reply in our runsOn Pro
Claude Opus 5.5Anthropic$4.00 / $20.001.3 times Kimi K3's$0.0107Up to 62 a month
Kimi K3MoonshotThis page$3.00 / $15.00–$0.0039Up to 125 a month
Gemini 3.1 Pro (preview)Google$2.00 / $12.0067% of Kimi K3's$0.0107Up to 125 a month
API prices as of September 2026, from our model catalog. The average reply is what OpenRouter charged for each model's replies to the same test prompts as Kimi K3's. On Pro: the most messages a month if all of Pro's allowance goes to that model, or an everyday model's daily count.

Kimi K3's own page: Kimi K3: price, limits and messages on every plan. Kimi K3 passed 46 of the 50 test prompts these costs come from.

Questions

How much does a Kimi K3 message cost?

In our test runs, $0.0039 a reply on average through OpenRouter (median $0.0035), across 50 Kimi K3 replies to our test prompts. At the API price a typical Kimi K3 message of 4,000 tokens in and 700 out costs $0.0225; a long chat costs more, because every reply rereads it.

What is Kimi K3's API price?

$3.00 per million input tokens and $15.00 per million output tokens, as of September 2026 (Moonshot's list price).

How many Kimi K3 messages does llmwise Pro include?

Up to 125 Kimi K3 messages a month on Pro ($20 a month), if the whole allowance goes to Kimi K3; the count on each plan is above.

Can I use Kimi K3 for free?

Yes, to try: Kimi K3 is in llmwise's one-time free trial of 5 messages.

Claude, GPT, Gemini, DeepSeek, Grok, Kimi, and GLM, in one chat.

See what a message costs before you send it. Free is 5 messages to try; sign in with an email link, no password or card.

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