Kimi K3

Kimi K3

Moonshot AI
Mercury 3

Mercury 3

Inception
+
+

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About

Kimi K3 is Moonshot AI’s most capable model, built for frontier intelligence scenarios such as software engineering, knowledge work, deep reasoning, and multimodal understanding. The model has 2.8 trillion parameters and uses Kimi Delta Attention, a hybrid linear attention mechanism, along with Attention Residuals for long-context performance. Kimi K3 supports a 1 million token context window, making it useful for analyzing large codebases, long documents, complex knowledge bases, and multi-step workflows. It includes native visual understanding for images and videos, with support for structured message formats, base64 image input, uploaded video files, and multimodal reasoning. Developers can use Kimi K3 through an OpenAI-compatible API with support for streaming, structured JSON output, partial mode, custom tools, dynamic tool loading, and automatic context caching.

About

Mercury 3 is a hosted generative AI model from Inception for developers building interactive applications. It uses a diffusion-based approach to generate text in parallel and supports streaming responses, tool use, structured outputs, and multimodal input including text, images, and audio. Through the Inception API, teams can use it for conversational assistants, voice applications, search and browsing workflows, tutoring, and other agentic tasks that benefit from responsive generation. The model is available through Inception’s API and named inference partners, with OpenAI-compatible API access for existing applications. Developers can evaluate output quality and latency, then integrate the model into their software using the documented API and SDK ecosystem. Usage is token-metered, with a free allocation and paid input/output token rates; enterprise options include dedicated capacity and support.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Developers, AI agent builders, software engineering teams, research teams, enterprise AI groups, data teams, product teams, and organizations that need long-context reasoning, multimodal understanding, structured output, tool calling, coding support, and OpenAI-compatible API access

Audience

Developers and product or engineering teams building conversational, voice-enabled, multimodal, search, browsing, tutoring, and agentic applications; enterprise teams can request dedicated capacity.

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Not Supported

API

Offers API Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

$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.
Free Version Not Supported
Free Trial Not Supported

Pricing

$0.10/1M input tokens
Launch pricing is $0.10 per million input tokens and $0.35 per million output tokens, 50% below standard rates of $0.20 and $0.70. A free allocation of 100 million tokens is available. Usage is token-metered; enterprise deployments offer dedicated capacity and priority support.
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 5.0 / 5
support 5.0 / 5

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Pros & Cons from Real Users

Pros

  • Kimi K3 looks seriously exciting from the perspective of a developer and AI agent builder. The 1M-token context window is the kind of thing that actually matters when you are working with large repos, long docs, product specs, logs, and messy multi-step agent workflows. I also like that Kimi is positioning it around long-horizon coding and end-to-end knowledge work, not just generic chat. The native visual understanding, tool calling support, and deep reasoning focus make it feel like a model built for agents that need to read, plan, inspect, code, and iterate across a real workflow. The 2.8T-parameter scale is also hard to ignore. If the real-world performance matches the positioning, Kimi K3 could be a very strong option for developers who want frontier-level capability with long context and multimodal inputs in the same stack.

Cons

  • It is still new, so I would want to test it heavily before depending on it for production agents. Big context windows are useful, but they do not automatically guarantee perfect repo understanding, reliable tool use, or consistent long-running execution.

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Moonshot AI
Founded: 2023
China
kimi.ai

Company Information

Inception
Founded: 2024
United States
www.inceptionlabs.ai/models

Alternatives

Alternatives

GPT-6 Luna

GPT-6 Luna

OpenAI
Grok 4.7

Grok 4.7

SpaceXSI
Kimi K2

Kimi K2

Moonshot AI
Mercury 2.5

Mercury 2.5

Inception
Kimi K2.5

Kimi K2.5

Moonshot AI

Categories

Categories

AI Models Supported

Integrations

Vercel AI Gateway Supported
C Supported
C# Supported
CSS Supported
Cosmos Supported
Kimi Supported
Kimi Claw Supported
Kimi Code Supported
Nebius Token Factory Supported
Objective-C Supported
OpenAI Not Supported
OpenAI Codex Supported
OpenClaw Supported
PHP Supported
PrivatClaw Supported
Python Supported
Rapid Claw Supported
SQL Supported
Solidity Supported
Tabbit Browser Supported

Integrations

Vercel AI Gateway Supported
C Not Supported
C# Not Supported
CSS Not Supported
Cosmos Not Supported
Kimi Not Supported
Kimi Claw Not Supported
Kimi Code Not Supported
Nebius Token Factory Not Supported
Objective-C Not Supported
OpenAI Supported
OpenAI Codex Not Supported
OpenClaw Not Supported
PHP Not Supported
PrivatClaw Not Supported
Python Not Supported
Rapid Claw Not Supported
SQL Not Supported
Solidity Not Supported
Tabbit Browser Not Supported
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