Kimi K3 Reviews & Ratings

Kimi K3

5.0 out of 5 stars

Ratings and Reviews 1 Rating

Total 5 out of 5 stars
ease 5 out of 5 stars
features 5 out of 5 stars
design 5 out of 5 stars
support 5 out of 5 stars

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What is Kimi K3?

Kimi K3 is Moonshot AI’s most advanced model, designed for high-end reasoning, software engineering, multimodal understanding, knowledge work, and agentic AI applications. The model has 2.8 trillion parameters and is built on Kimi Delta Attention, a hybrid linear attention mechanism created for long-context performance. It also uses Attention Residuals and supports a native context window of up to 1 million tokens. This makes Kimi K3 suitable for tasks involving large codebases, long research materials, enterprise documentation, multi-file analysis, legal documents, technical manuals, and complex workflows. Kimi K3 always has thinking mode enabled, with reasoning effort configured through the reasoning_effort field and maximum effort currently supported as the default. Developers can use the model through an OpenAI-compatible API, making it easier to integrate with existing SDKs, clients, and application infrastructure. The model supports streaming responses with separate reasoning and final-answer deltas, allowing applications to display reasoning progress and final content differently. Kimi K3 also supports strict structured output with JSON Schema, partial mode for continuing from a prefix, custom tool calling, required tool use, and dynamic tool loading through system messages. Its vision capabilities support image and video inputs through base64 or uploaded files, enabling analysis of visual content alongside text. Automatic context caching helps workflows that reuse long prefixes, such as large knowledge bases or persistent system context, without requiring developers to manage cache IDs manually. By combining frontier-scale parameters, long-context processing, visual input, structured outputs, tool orchestration, and developer-friendly API compatibility, Kimi K3 gives teams a strong foundation for advanced AI agents, coding assistants, research systems, enterprise automation, and multimodal applications.

What is Inkling 2 Small?

Inkling 2 Small is an advanced multimodal large language model developed by Thinking Machines Lab to support autonomous coding, complex reasoning, visual understanding, and customizable AI applications. The model uses a sparse mixture-of-experts transformer architecture containing 594 billion total parameters and 17 billion active parameters, with 48 decoder layers and 384 specialized experts. Its architecture combines local and global attention mechanisms with a vision transformer that processes images alongside text within a shared representation. Inkling 2 Small supports a context window of up to one million tokens, making it suitable for analyzing extensive documents, large software repositories, and long-running agent workflows. Configurable reasoning effort enables users to adjust the computational resources devoted to individual tasks based on their complexity and performance requirements. Its agentic software engineering capabilities include generating code, debugging applications, implementing features, verifying changes, and operating development tools across extended workflows. The model can also create interactive websites, games, three-dimensional simulations, and visual applications while using image-based feedback to evaluate and improve its results. Advanced research capabilities allow autonomous agents to conduct machine learning experiments, optimize GPU kernels, evaluate training strategies, and iteratively refine technical solutions. Thinking Machines Lab trained the model using 8.4 trillion pretraining tokens and a large reinforcement learning process involving more than 17 million rollouts across coding, scientific reasoning, visual tasks, knowledge work, and tool use. Published evaluation results include 25.4% on FrontierCode 2.0, 72.1% on DeepSWE 1.1, 86.3% on SWE-Bench Pro v2 Hard, and an Artificial Analysis Intelligence Index score of 31.

Media

Media

Integrations Supported

APIFree
C++
Clarifai
Cline
ClinePass
Command Code
Dart
Fireworks AI
JavaScript
JetBrains Junie
Kotlin
Novita AI
OpenAI Codex
OpenCode
OpenCode Zen
Scala
Solidity
Tabbit Browser
Tailwind CSS
Viktor

API Availability

Has API

API Availability

Has API

Pricing Information

$3 per 1M tokens (input)
Kimi K3 is priced per 1 million tokens:

Cached input: $0.30
Uncached input: $3.00
Output: $15.00
Context window: 1,048,576 tokens

Cached inputs cost 90% less than uncached inputs, while generated output is the most expensive token category. Prices exclude applicable taxes, which are calculated based on the customer’s jurisdiction.

Pricing Information

$0.30 per million input tokens
$0.30 per million input tokens, $0.03 per million cached input tokens, and $1.00 per million output tokens

Supported Platforms

SaaS

Supported Platforms

SaaS

Customer Service / Support

Web-Based Support

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub

Company Facts

Organization Name

Moonshot AI

Date Founded

2023

Company Location

China

Company Website

kimi.ai

Company Facts

Organization Name

Thinking Machines Lab

Date Founded

2025

Company Location

United States

Company Website

thinkingmachines.ai/

Categories and Features

AI Coding Models

Not specified

AI Models

Not specified

AI Reasoning Models

Not specified

Foundation Models

Not specified

Large Language Models

Not specified

Open-Weight AI Models

Not specified

Categories and Features

AI Coding Models

Not specified

AI Models

Not specified

AI Reasoning Models

Not specified

AI Vision Models

Not specified

Open-Weight AI Models

Not specified

Small Language Models

Not specified

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