Model index
Moonshot AI·Kimi

Kimi K1.5

Moonshot’s multimodal reasoning work exploring long-context reinforcement learning and test-time reasoning scale.

LegacyReasoningMultimodalWeights not released
MODEL NUMBER032
First public date
2025-01-20
Organization
Moonshot AI
Family
Kimi
01

Specifications

Only published specifications are shown.

Input modalities
Text · Image↗
Output modalities
Text↗
Open weights
No
Status
Legacy
02

Overview

Release dates

— Moonshot published its Kimi K1.5 multimodal reasoning work. ↗

Why it mattered

K1.5 combined long context with RL-based reasoning and provided a research base for later open Kimi agent models.

03

Architecture & capabilities

Model capabilities

ReasoningLong contextReinforcement learning
04

Release history

Announcement

Moonshot published its Kimi K1.5 multimodal reasoning work.

View source
05

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06

Sources

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