Moonshot AI (Kimi)

Kimi K3.1 Pro

A multimodal reasoning model for long-horizon coding, 3D creation, financial research, and agentic knowledge work with a 1-million-token context window.

ActiveReleased October 24, 2026
Tool callingCan invoke external tools and APIs (function calling) mid-response.Structured outputCan return JSON or schema-constrained responses instead of free text.ReasoningUses extended thinking / chain-of-thought for harder multi-step problems.Effort controlLets you dial thinking depth (low / medium / high) to trade cost for quality.Fine-tuningSupports training a custom variant on your own data (vendor fine-tune API or self-hosted open weights).

Source: Kimi API platform, Moonshot launch and capabilities, OpenRouter exact offer specifications, https://openrouter.ai/moonshotai/kimi-k3.1-pro

Price per 1M tokens via OpenRouter
$2 in / $10 out
Context window1,048,576
Max output943,718
Cache read$0.2 / M
Input
  • Text
  • Image
  • Video
Output
  • Text

Pricing

Every billing leg from the live catalog, in USD per 1M tokens.

Billing legRate
Input$2 / M
Output$10 / M
Cache read$0.2 / M

Cost calculator

Billing-grade math over the rate card above, including the thinking tokens most estimates miss.

Hidden reasoning tokens bill as output. 1.0x = thinking off. Medium-effort reasoning typically lands near 3x; heavy reasoning runs 6x to 8x. Set it to match your workload.

Estimated monthly cost
$1.0K
at current list prices
Fresh input$400
Cached input$0.00
Output incl. thinking$600
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Provider

Where this model runs, and what it charges.

PlatformInput / MOutput / MCache read / MBatchAccess
Moonshot AI
$2$10$0.2-via OpenRouter

Price history

Has this model gotten cheaper or more expensive?

No changePriced at $2 / $10 per 1M since October 24, 2026.

More from Moonshot AI (Kimi)

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Kimi K3
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$0.6712 / $3.35 in / out per 1M
Kimi K2.6
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$1.2 / $4.5 in / out per 1M
Kimi K2.5
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$0.49 / $2.5 in / out per 1M
Kimi K2 Thinking
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$0.6 / $2.5 in / out per 1M
Kimi K2
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$0.57 / $2.3 in / out per 1M

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Rates are generated from SuperPenguin's live pricing catalog.