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月之暗面（Moonshot AI）

Kimi K3.1 Pro

CClosed

Moonshot AI's Pro flagship in the Kimi K3.1 series, released in 2026, focused on deep reasoning and complex Chinese-language tasks over ultra-long (1M+) contexts. Ranked #10 worldwide on the Artificial Analysis Intelligence Index (46.5). Versus Kimi K3, K3.1 Pro substantially improves reasoning depth and tool use for professional and research workloads.

API Pricing

Input

$4

Output

$20

Cached input

$0.4

Peak hours

—

USD / 1M tokens

※ 发布定价（2026-11）：每百万 token 输入 $4 / 输出 $20 / 缓存输入 $0.4（Pro 进阶档，高于 Kimi K3 的 $3/$15）。

Price sourceplatform.moonshot.cn ↗kimi.moonshot.cn ↗· verified 2026-11-12

Specifications

Context window
1M Tokens
Max output
65,536 Tokens
Input modalities
Text · Image
License
Closed

Overall score

Total

46.7

Rank

#28

Tier

C

Data confidence

74%

Capability71.9
Scale34
Value32
Context35
Ecosystem36
Freshness35

Capabilities & use cases

AA_Intelligence_Index #10 (46.5)

Key capabilities

  • 1M+ long context
  • Deep reasoning
  • Tool use / function calling
  • Strong Chinese reasoning

Best for

  • Ultra-long document analysis
  • Complex Chinese reasoning
  • Professional research assistance
  • Agent tool use

Official links

Website ↗API platform ↗Pricing page ↗Open in comparator ↗

Similar price

Claude Opus 5.5 $20Gemini 4 Carbon $15Kimi K3 $15GPT-5.4 $15Claude Opus 4.8 $25GPT-5.2 $14

FAQ

What does Kimi K3.1 Pro cost?
Kimi K3.1 Pro is priced at $20 output and $4 input (USD per 1M tokens)
How large is the context window of Kimi K3.1 Pro?
Kimi K3.1 Pro has a 1M Tokens context window with up to 65,536 Tokens output.
Where can I access Kimi K3.1 Pro?
Official channels: Website and API platform.

Data is refreshed daily and cross-checked against two independent sources; please confirm pricing and specs on the vendor page.