GPT-5.5

GPT-5.5

OpenAI
Kimi K3

Kimi K3

Moonshot AI
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About

GPT-5.5 is an advanced AI model designed to handle complex, real-world tasks with greater autonomy and efficiency. It quickly understands user intent and can execute multi-step workflows such as coding, research, data analysis, and document creation with minimal guidance. Instead of requiring step-by-step instructions, GPT-5.5 plans tasks, uses tools, evaluates outputs, and continues working until completion. It excels in knowledge work, software development, and analytical problem-solving, helping users move from idea to execution faster. The model is built to operate across tools and environments, making it highly effective for modern digital workflows. With strong reasoning and persistence, GPT-5.5 enables individuals and teams to complete demanding work more efficiently and accurately.

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.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

GPT-5.5 is ideal for enterprises, developers, researchers, and business teams looking to automate complex workflows, enhance productivity, and scale operations using AI and workspace agents

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

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

$5 per 1M tokens (input)
Free Version
Free Trial

Pricing

$3 per 1M tokens (input)
Free Version
Free Trial

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

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

OpenAI
Founded: 2015
United States
openai.com

Company Information

Moonshot AI
Founded: 2023
China
kimi.ai

Alternatives

Claude Fable 5

Claude Fable 5

Anthropic

Alternatives

Claude Fable 5

Claude Fable 5

Anthropic
Claude Mythos 5

Claude Mythos 5

Anthropic
Claude Opus 4.8

Claude Opus 4.8

Anthropic
Claude Mythos

Claude Mythos

Anthropic
Claude Sonnet 5

Claude Sonnet 5

Anthropic
GPT-5.5 Pro

GPT-5.5 Pro

OpenAI
Kimi K2.5

Kimi K2.5

Moonshot AI
Kimi K2

Kimi K2

Moonshot AI

Categories

Categories

Integrations

AiAssistWorks
Bash
Brokk
C++
Claw Code
EaseMate AI
Factory Droid
HTML
Java
JetBrains Junie
Oh My OpenAgent
PHP
Pi Agent
PowerShell
PrivatClaw
Python
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Vercel AI Gateway
Visual Studio Code
ZooClaw

Integrations

AiAssistWorks
Bash
Brokk
C++
Claw Code
EaseMate AI
Factory Droid
HTML
Java
JetBrains Junie
Oh My OpenAgent
PHP
Pi Agent
PowerShell
PrivatClaw
Python
SQL
Vercel AI Gateway
Visual Studio Code
ZooClaw
Claim GPT-5.5 and update features and information
Claim GPT-5.5 and update features and information
Claim Kimi K3 and update features and information
Claim Kimi K3 and update features and information