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Codex vs Kimi Code: Features, Pricing and User Reviews 2026

Codex logo

Codex

OpenAI's AI Coding Agent for Developers

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VS
Kimi Code logo

Kimi Code

Moonshot AI's Agentic Coding Assistant

Kimi Code screenshot

What are Codex and Kimi Code?

Codex logo
Codex

Codex is an AI coding agent from OpenAI that can plan, write, test, and fix code with real autonomy. You describe a task in plain language, and Codex works through your project step by step, running commands, checking tests, and preparing changes for you to review.

It started as a tool for software engineers but has grown into a wider work assistant used by analysts, designers, and other non-technical teams too. Codex runs in isolated spaces, so it does not touch your main project files directly.

You can use it from a desktop app, a command line tool, inside your code editor, or through ChatGPT on the web, and everything stays in sync across each place you work.

Kimi Code logo
Kimi Code

Kimi Code is an AI coding agent and command line tool built by Moonshot AI. It helps developers explore codebases, edit multiple files, run commands, and finish programming tasks from start to finish. Instead of just suggesting a line of code, it can plan a task, use tools, and work through it step by step.

It comes as a terminal based CLI, a VS Code extension, and an API that works with other coding tools. It supports very long context windows, so it can read and remember large projects, and it connects to external tools and data through MCP, skills, and plugins.

Kimi Code is open source, and some of the models behind it have open weights too.

Features of Codex and Kimi Code

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Codex
  • AI agent for coding, testing, and reviewing

  • Multi-agent parallel task execution

  • Isolated sandboxes for safe changes

  • Reusable skills for repeat workflows

  • Role-based plugins for teams

  • Background automations for recurring tasks

  • Desktop, CLI, IDE, and web access

  • Synced work across your ChatGPT account

  • Approval gates and permission controls

  • Used by developers and knowledge workers

Kimi Code logo
Kimi Code
  • Agentic coding CLI and VS Code extension

  • Multi-file editing and shell command execution

  • Up to 1 million token context with K3

  • Swarm mode for parallel agents

  • Goal Mode for autonomous task completion

  • MCP, skills, plugins, and hooks support

  • Image and video input support

  • Open source CLI with open model weights

  • API access for third-party tools

  • Free plan plus paid subscription tiers

Use Cases of Codex and Kimi Code

Pricing of Codex and Kimi Code

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Codex

Codex is included as part of ChatGPT's plans, so pricing depends on which plan you choose.

  • Free ($0/month): Limited access to Codex along with basic chat features.

  • Go ($8/month): More messages, uploads, and memory, though Codex access stays limited.

  • Plus ($20/month): Unlocks expanded Codex usage along with stronger models and more features.

  • Pro (from $100/month): Gives the most Codex tasks, top-tier models, and unlimited image creation.

  • Business: Costs $20 per user a month billed yearly, or $25 monthly, with a minimum of two users, and includes full Codex access with admin tools.

  • Enterprise: Custom pricing that adds advanced security, data controls, and priority support.

Kimi Code logo
Kimi Code

Kimi Code offers a free plan called Adagio, along with four paid membership tiers billed monthly or yearly.

  • Adagio (Free): Free forever, with standard agent credits and basic tools.

  • Moderato ($19/month): Adds more agent credits, Kimi Code access, Swarm, multiple agents, and website deployment.

  • Allegretto ($39/month): Everything in Moderato, plus Goal Mode and one click Kimi Claw deployment.

  • Allegro ($99/month): Everything in Allegretto, plus up to 1 million tokens of context for long conversations.

  • Vivace ($199/month): The highest agent credit allocation and the top usage limits across the platform.

Paying yearly lowers the monthly cost and can save up to $480 a year. A separate Business plan is available for companies, with pricing shared only after contacting Kimi.

FAQs: Codex vs Kimi Code

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Codex
Kimi Code logo
Kimi Code

Reviews: Codex vs Kimi Code

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Kimi Code
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Compare Codex With Other Tools

Compare Kimi Code With Other Tools