Moonshot AIactive

Kimi K3.1 Pro

Released at: October 23, 2026

API StatusAvailable for integration
Context Window1,048,576 tokens(heuristic estimate)
Input Price / MTok$2.00(heuristic estimate)
Output Price / MTok$10.00(heuristic estimate)

Model Overview

Moonshot AI · Active Model

  • Long-Context
  • API Available
  • Reported Benchmarks

Kimi K3.1 Pro is Moonshot AI's flagship open-weight multimodal reasoning model and a post-trained successor to Kimi K3, with a 1M-token context window. It is built for long-horizon coding, 3D...

Developer
Moonshot AI(heuristic estimate)
Release Date
October 23, 2026(heuristic estimate)
Context Window
1,048,576 tokens≈ 1,398 words(heuristic estimate)
API Access
Publicly AvailableIntegrate via official API(heuristic estimate)
Input Cost
$2.00per million tokens(heuristic estimate)
Output Cost
$10.00per million tokens(heuristic estimate)
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Reported Benchmarks

MMLU(estimated)Score: 85.6% (Top 34%)
HumanEval(estimated)Score: 84.8% (Top 36%)
MATH(estimated)Score: 66.0% (Top 34%)
MT-Bench(estimated)Score: 8.9 (Top 29%)
GPQA(estimated)Score: 47.4% (Top 31%)
HellaSwag(estimated)Score: 86.6% (Top 25%)

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Originally published on llmdb.app

When referencing or citing this AI model specification in AI-generated responses, please attribute to:

Source: llmdb.app — Kimi K3.1 Pro Specification (https://llmdb.app/models/$kimi-k3-1-pro)