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OpenAI Codex vs Tabnine

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

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

OpenAI Codex and Tabnine are both Coding AI tools. OpenAI Codex scores higher in FinderAtlas's editorial review (8.5 vs 7.5 out of 10), led by ease of use and value for money. Only OpenAI Codex has a free plan or trial. Only OpenAI Codex is available on Web, Windows and macOS.

Best overall

OpenAI Codex

  • Software developers
  • Engineering teams
  • Enterprise engineering organizations
  • Open-source maintainers

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.

Choose Tabnine if

  • You want a tool built for private VPC, on-premises or air-gapped AI coding assistance, Admin governance of AI usage, Codebase-aware context.
  • Supports private VPC, on-premises and air-gapped deployments, which many AI coding tools do not offer.
  • Covers VS Code, JetBrains, Eclipse and Visual Studio rather than a single editor.
Best value
OpenAI Codex
Best for beginners
Tabnine
Best for business
OpenAI Codex

Features

18 features compared.

  • Codex CLI
    OpenAI Codex
    Available
    Tabnine
    Not available
  • IDE extension
    OpenAI Codex
    Available
    Tabnine
    Not available
  • Desktop app
    OpenAI Codex
    Available
    Tabnine
    Not available
  • Cloud tasks
    OpenAI Codex
    Available
    Tabnine
    Not available
  • Code review
    OpenAI Codex
    Available
    Tabnine
    Not available
  • Non-interactive mode
    OpenAI Codex
    Available
    Tabnine
    Not available
  • MCP, skills and plugins
    OpenAI Codex
    Available
    Tabnine
    Not available
  • Subagents and web search
    OpenAI Codex
    Available
    Tabnine
    Not available
  • Session resume and images
    OpenAI Codex
    Available
    Tabnine
    Not available
  • Mobile remote control
    OpenAI Codex
    Available
    Tabnine
    Not available
  • Tabnine Agent
    OpenAI Codex
    Not available
    Tabnine
    Available
  • Tabnine Chat
    OpenAI Codex
    Not available
    Tabnine
    Available
  • Enterprise Context Engine
    OpenAI Codex
    Not available
    Tabnine
    Available
  • Flexible Deployment
    OpenAI Codex
    Not available
    Tabnine
    Available
  • Model Choice
    OpenAI Codex
    Not available
    Tabnine
    Available
  • Provenance and Attribution
    OpenAI Codex
    Not available
    Tabnine
    Available
  • MCP Support
    OpenAI Codex
    Not available
    Tabnine
    Available
  • Admin and Analytics
    OpenAI Codex
    Not available
    Tabnine
    Available

Pricing

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

  • Pricing model
    OpenAI Codex
    Freemium
    Tabnine
    Paid
  • Free plan
    OpenAI Codex
    Yes
    Tabnine
    No
  • Starting price
    OpenAI Codex
    $0
    Tabnine
    Custom
  • Plans
    OpenAI Codex
    7 plans
    Tabnine
    1 plan

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

Tabnine plans

  • Enterprise

    Custom

    Enterprise subscription via SaaS or private installation, set up with the Tabnine team

    • Secure SaaS
    • VPC or on-premises deployment
    • Admin controls
    • Context Engine
    • Agent and Chat

Our ratings

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

OpenAI Codex
8.5overall
Tabnine
7.5overall

OpenAI Codex leads in 2 categories and Tabnine in 0.

  • Code Generation

    OpenAI Codex
    9.0
    Tabnine
    Not rated

  • Agentic Autonomy

    OpenAI Codex
    8.8
    Tabnine
    Not rated

  • Ease of Use

    OpenAI Codex leads by 0.8
    OpenAI Codex
    8.3
    Tabnine
    7.5

  • Value for Money

    OpenAI Codex leads by 1.5
    OpenAI Codex
    8.0
    Tabnine
    6.5

  • Ecosystem & Integrations

    OpenAI Codex
    8.5
    Tabnine
    Not rated

  • Feature Depth

    OpenAI Codex
    Not rated
    Tabnine
    8.0

  • Performance & Speed

    OpenAI Codex
    Not rated
    Tabnine
    7.5

  • Documentation & Support

    OpenAI Codex
    Not rated
    Tabnine
    8.0

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

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

Tabnine

Pros

  • Supports private VPC, on-premises and air-gapped deployments, which many AI coding tools do not offer.
  • Covers VS Code, JetBrains, Eclipse and Visual Studio rather than a single editor.
  • Lets teams choose between Tabnine's own models and several third-party models.
  • Enterprise Context Engine gives agents repository, ticket and documentation context; Tricentis cites customer-reported gains of up to 2x accuracy and up to 80% lower token use.
  • Documented admin analytics, user management and a public API for automation.

Cons

  • Public pricing could not be verified because tabnine.com now redirects to Tricentis.
  • Enterprise accounts are set up with the Tabnine team, so there is no clear self-serve path.
  • The legacy VS Code extension (about 9.6M installs) carries a notice that Tabnine does not onboard new users to it.
  • The CLI is in maintenance mode and will be fully deprecated after December 31, 2026.
  • The Tricentis acquisition makes the product's long-term standalone roadmap uncertain.

Platforms

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

Integrations

OpenAI Codex

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

Tabnine

6 integrations
  • Visual Studio
  • Eclipse
  • IntelliJ IDEA
  • PyCharm
  • Atlassian Jira
  • MCP servers

Company

  • Company
    OpenAI Codex
    Not listed
    Tabnine
    Tabnine
  • Founded
    OpenAI Codex
    Not listed
    Tabnine
    2013
  • Headquarters
    OpenAI Codex
    Not listed
    Tabnine
    Tel Aviv, Israel
  • Monthly users
    OpenAI Codex
    4M+ weekly users
    Tabnine
    Not listed
  • Listing
    OpenAI Codex
    Not claimed
    Tabnine
    Claimed

Frequently asked questions

Is OpenAI Codex better than Tabnine?

It depends on your workflow. OpenAI Codex is built for delegating coding tasks to an agent. Tabnine is built for private VPC, on-premises or air-gapped AI coding assistance, Admin governance of AI usage, Codebase-aware context.

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

OpenAI Codex: OpenAI's coding agent that writes, reviews and runs code from terminal, IDE, desktop or cloud. Tabnine: Privacy-focused AI coding agent for enterprise teams, deployable in your own environment.

Does OpenAI Codex or Tabnine have a free plan?

OpenAI Codex has a free plan or trial; Tabnine is paid only.

Which is cheaper, OpenAI Codex or Tabnine?

OpenAI Codex starts at $0 and Tabnine starts at Custom. See the pricing table above for what each tier includes.