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Claude vs OpenAI Codex

Features, pricing, ratings, and pros and cons, side by side.

Claude logo

Claude

Anthropic's AI assistant for writing, analysis, coding and working with files

4.5(2 reviews)Freemium
Visit websiteView details
OpenAI Codex logo

OpenAI Codex

OpenAI's coding agent that writes, reviews and runs code from terminal, IDE, desktop or cloud

Freemium
Visit websiteView details

Verdict

Claude is listed under AI Assistants and OpenAI Codex under Coding AI. Claude scores higher in FinderAtlas's editorial review (9.1 vs 8.5 out of 10). Both have a free plan or trial. Only Claude is available on iOS, Android and Chrome Extension. Only OpenAI Codex is available on CLI, VS Code Extension and JetBrains Plugin.

Best overall

Claude

  • Software developers
  • Writers and editors
  • Researchers and analysts
  • Knowledge workers

Choose Claude if

  • You want a tool built for coding and code review.
  • Free plan includes web search, file creation, code execution and memory.
  • Artifacts show generated code and pages beside the chat.

Choose OpenAI Codex if

  • You want a tool built for delegating coding tasks to an agent.
  • Included with ChatGPT plans, with a free tier and an $8 Go tier.
  • Open-source CLI under the Apache-2.0 license.
Best for beginners
Claude
Best for business
Claude

Features

19 features compared.

  • Artifacts
    Claude
    Available
    OpenAI Codex
    Not available
  • Projects
    Claude
    Available
    OpenAI Codex
    Not available
  • Claude Code
    Claude
    Available
    OpenAI Codex
    Not available
  • File creation and code execution
    Claude
    Available
    OpenAI Codex
    Not available
  • Web search and Research
    Claude
    Available
    OpenAI Codex
    Not available
  • Memory
    Claude
    Available
    OpenAI Codex
    Not available
  • Connectors
    Claude
    Available
    OpenAI Codex
    Not available
  • Vision and document reading
    Claude
    Available
    OpenAI Codex
    Not available
  • Claude in Chrome
    Claude
    Available
    OpenAI Codex
    Not available
  • Codex CLI
    Claude
    Not available
    OpenAI Codex
    Available
  • IDE extension
    Claude
    Not available
    OpenAI Codex
    Available
  • Desktop app
    Claude
    Limited
    OpenAI Codex
    Available
  • Cloud tasks
    Claude
    Not available
    OpenAI Codex
    Available
  • Code review
    Claude
    Not available
    OpenAI Codex
    Available
  • Non-interactive mode
    Claude
    Not available
    OpenAI Codex
    Available
  • MCP, skills and plugins
    Claude
    Not available
    OpenAI Codex
    Available
  • Subagents and web search
    Claude
    Not available
    OpenAI Codex
    Available
  • Session resume and images
    Claude
    Not available
    OpenAI Codex
    Available
  • Mobile remote control
    Claude
    Not available
    OpenAI Codex
    Available

Limited means partial support or a paid add-on.

Pricing

Plans as listed by each vendor. Check their sites for current prices.

  • Pricing model
    Claude
    Freemium
    OpenAI Codex
    Freemium
  • Free plan
    Claude
    Yes
    OpenAI Codex
    Yes
  • Starting price
    Claude
    $0
    OpenAI Codex
    $0
  • Plans
    Claude
    6 plans
    OpenAI Codex
    7 plans

Claude plans

  • Free

    $0

    Free for everyone, with the lowest usage limits

    • Chat on web
    • desktop and mobile
    • Web search
    • File creation and code execution
    • Memory across conversations
    • Artifacts
    • Connectors with remote MCP

  • Pro

    Most popular

    $20/month

    For everyday use; $17 per month when billed annually ($200 up front)

    • Everything in Free
    • Claude Code
    • Projects
    • More models
    • Claude in Chrome
    • Microsoft 365 integration
    • Opus access
    • Fable available with paid usage credits

  • Max

    $100/month

    5x Pro usage every five hours and every week

    • Everything in Pro
    • 5x Pro usage
    • Fable included up to half the weekly limit
    • $100 per month in Claude Platform API credits
    • Early access to advanced features
    • Priority access at high traffic times

  • Ultra

    $200/month

    For the longest tasks; no five-hour limit for verified accounts

    • Everything in Max
    • No 5-hour limit for verified accounts
    • 10x Pro usage every week
    • $200 per month in Claude Platform API credits (up from $100 on Max)
    • Priority access at high traffic times

  • Team

    $25/user/mo

    Standard seat for teams of 2 to 150; $20 per seat when billed annually. Premium seat is $125 monthly or $100 annually

    • Claude Code and Cowork
    • Central billing and administration
    • SSO
    • Admin controls for connectors
    • More usage than Pro on Standard seats
    • Premium seats with 5x Standard usage
    • Up to $500 per month in pooled API credits

  • Enterprise

    $20/user/mo

    Seat price billed annually, 20-seat minimum, plus usage at API rates

    • Everything in Team
    • Admin-set user and org spend limits
    • Role-based access
    • SCIM
    • Audit logs
    • Compliance API
    • Custom data retention controls
    • Network-level access control
    • IP allowlisting
    • HIPAA-ready offering available
    • Claude Security (beta)

OpenAI Codex plans

  • Free

    $0

    Quick coding tasks

    • GPT-6 Luna in the desktop app
    • Subject to rollout

  • Go

    $8/month

    Lightweight coding tasks

    • GPT-6 Luna in the desktop app

  • Plus

    Most popular

    $20/month

    Focused coding sessions

    • Web
    • CLI
    • IDE and iOS access
    • Automatic code review and Slack
    • GPT-6.1 Sol and GPT-6 Luna
    • Can add credits

  • Pro

    $100/month

    Plans at $100, $200 or $500 per month

    • Everything in Plus
    • No five-hour limit currently
    • Ultrafast mode on the $500 plan

  • Business

    $25/user/mo

    2 or more users; $20 per user per month when billed annually

    • Desktop and mobile apps
    • Larger cloud VMs
    • Add-on credits
    • SAML SSO and MFA
    • No training on business data by default

  • Enterprise & Edu

    Custom/user/mo

    Contact sales

    • Priority request processing
    • SCIM
    • EKM and RBAC
    • User analytics
    • Compliance API audit logs
    • Retention and residency controls

  • API Key

    Pay-as-you-go/usage

    Billed at OpenAI API pricing

    • Codex in the CLI
    • SDK and IDE extension
    • No cloud features
    • Models depend on the API key

Our ratings

Scored out of 10 by the Finder Atlas editorial team. Last reviewed November 2026.

Claude
9.1overall
OpenAI Codex
8.5overall

  • Coding & Syntax

    Claude
    9.3
    OpenAI Codex
    Not rated

  • Reasoning & Logic

    Claude
    9.2
    OpenAI Codex
    Not rated

  • Long Context

    Claude
    9.0
    OpenAI Codex
    Not rated

  • Prose & Writing Quality

    Claude
    9.2
    OpenAI Codex
    Not rated

  • Safety & Alignment

    Claude
    8.8
    OpenAI Codex
    Not rated

  • Code Generation

    Claude
    Not rated
    OpenAI Codex
    9.0

  • Agentic Autonomy

    Claude
    Not rated
    OpenAI Codex
    8.8

  • Ease of Use

    Claude
    Not rated
    OpenAI Codex
    8.3

  • Value for Money

    Claude
    Not rated
    OpenAI Codex
    8.0

  • Ecosystem & Integrations

    Claude
    Not rated
    OpenAI Codex
    8.5

Scores weigh documented features, plan value, platform coverage, integrations and user feedback. A missing score means we have not rated that area yet.

Pros and cons

Claude

Pros

  • Free plan includes web search, file creation, code execution and memory
  • Artifacts show generated code and pages beside the chat
  • Claude Code is included with Pro, Max, Ultra and Team
  • Connectors use MCP to reach Slack, Google Workspace and other tools
  • Available on web, desktop, iOS and as a Chrome extension, plus an API and major cloud platforms

Cons

  • Usage limits on every plan, with weekly caps (and five-hour caps below Ultra) and no published message counts
  • Does not generate images
  • The higher individual tiers are costly: Max is $100 per month and Ultra is $200 per month
  • Linux desktop app is still in beta

OpenAI Codex

Pros

  • Included with ChatGPT plans, with a free tier and an $8 Go tier
  • Open-source CLI under the Apache-2.0 license
  • Available in the terminal, VS Code-based editors, the ChatGPT desktop app and the cloud
  • Supports MCP, skills, plugins and subagents
  • API-key option lets teams pay at API rates instead of a subscription

Cons

  • Plus has message limits per five hours that vary widely by model
  • Cloud features are not available on the API Key plan
  • Higher usage needs Pro, which starts at $100 per month
  • Free and Go plans offer only GPT-6 Luna in the desktop app

Platforms

  • Web
    Claude
    Supported
    OpenAI Codex
    Supported
  • Windows
    Claude
    Supported
    OpenAI Codex
    Supported
  • macOS
    Claude
    Supported
    OpenAI Codex
    Supported
  • iOS
    Claude
    Supported
    OpenAI Codex
    Not supported
  • Android
    Claude
    Supported
    OpenAI Codex
    Not supported
  • API
    Claude
    Supported
    OpenAI Codex
    Supported
  • Browser Extension
    Claude
    Not supported
    OpenAI Codex
    Not supported
  • Linux
    Claude
    Supported
    OpenAI Codex
    Supported
  • Chrome Extension
    Claude
    Supported
    OpenAI Codex
    Not supported
  • CLI
    Claude
    Not supported
    OpenAI Codex
    Supported
  • VS Code Extension
    Claude
    Not supported
    OpenAI Codex
    Supported
  • JetBrains Plugin
    Claude
    Not supported
    OpenAI Codex
    Supported

Integrations

Claude

7 integrations
  • Slack
  • Google Workspace
  • Microsoft 365
  • MCP connectors
  • Amazon Bedrock
  • Google Cloud
  • Microsoft Foundry

OpenAI Codex

8 integrations
  • GitHub
  • Slack
  • Visual Studio Code
  • Cursor
  • Windsurf
  • Xcode
  • JetBrains IDEs
  • MCP

Company

  • Company
    Claude
    Anthropic
    OpenAI Codex
    Not listed
  • Founded
    Claude
    2021
    OpenAI Codex
    Not listed
  • Headquarters
    Claude
    San Francisco, CA
    OpenAI Codex
    Not listed
  • Monthly users
    Claude
    Not listed
    OpenAI Codex
    4M+ weekly users
  • Listing
    Claude
    Claimed
    OpenAI Codex
    Not claimed

Frequently asked questions

Is Claude better than OpenAI Codex?

It depends on your workflow. Claude is built for coding and code review. OpenAI Codex is built for delegating coding tasks to an agent.

What are the key feature differences between Claude and OpenAI Codex?

Claude: Anthropic's AI assistant for writing, analysis, coding and working with files. OpenAI Codex: OpenAI's coding agent that writes, reviews and runs code from terminal, IDE, desktop or cloud. Claude is rated 4.5/5 from 2 user reviews.

Does Claude or OpenAI Codex have a free plan?

Yes, both do. Claude is freemium and OpenAI Codex is freemium, and each has a free plan or trial.

Which is cheaper, Claude or OpenAI Codex?

Both can be used for free. Paid plans differ in limits and features, so compare the tiers in the pricing table above.