Coding

Codex

OpenAI · #7 most active of 25 in Coding

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A software engineering agent that runs tasks in parallel sandboxes and opens pull requests.

75

Trust score · Mostly verified

2 data points checked · 2026-09-14

Model stack: DisputedEntry price: UnverifiableVersion: VerifiedHow this works →

Current version

Codex

Entry cost

from $20/mo

Changes / 30d

8

The short answers · verified September 15, 2026

What is the latest version of Codex?
The current shipped version of Codex is Codex, as of September 15, 2026.
How much does Codex cost?
Codex starts at $20 per month on its cheapest paid tier, as of September 15, 2026.
What AI model does Codex use?
Codex runs primarily on 5.6 Sol.

Source: OpenAIhelp.openai.com · Reusable under CC BY 4.0 — cite Tomorrow

Capabilities

  • Codex CLI
  • Codex IDE extension
  • Codex cloud
  • Codex Micro
  • Code review
  • Security workbench
  • Code generation
  • Codex Security
  • Integrated terminal
  • Local environments
  • Cloud environment
  • Codex SDK
  • Codex Security plugin
  • MCP Server
  • GitHub Action
  • Computer use
  • Voice Plugins
  • Web search
  • Image generation
  • Image inputs
  • Appshots
  • Chrome extension
  • Voice
  • Plugins
  • Code interpreter
  • CLI customization
  • IDE extension
  • ChatGPT Voice
  • Security scan
  • CLI
  • Cloud
  • code generation
  • code review
  • cli
  • ide extension
  • agent
  • computer use
  • cloud environment
  • cloud
  • Browser
  • Git support
  • Computer History
  • Browser extension
  • GitLab integration
  • Scheduled tasks
  • Browser use
  • Git integration
  • MCP connections
  • Agent workflows
  • Sandboxing

Pricing

  • Plus

    $20

  • Pro

    $200

  • Business

    $25

  • API

    usage-based

    Free

Entry price over time

7/29/2026 · $209/15/2026 · $20

Geek mode

Models under the hood

  • 5.6 Sol

    OpenAI

    disclosed
  • GPT-4

    OpenAI

    inferred
  • GPT-5.2

    OpenAI

    disclosed
  • GPT-5.2-Codex

    OpenAI

    disclosed
  • GPT-5.4

    OpenAI

    inferred
  • GPT-5.6

    OpenAI

    disclosed
  • GPT-5.6 Luna

    OpenAI

    disclosed
  • GPT-5.6 Sol

    OpenAI

    disclosed
  • GPT-5.6 Terra

    OpenAI

    disclosed
  • GPT-6 Astra

    OpenAI

    disclosed
  • GPT-Live

    OpenAI

    disclosed
  • gpt-oss

    OpenAI

    inferred

Context window

400K tokens

Public API

yes

Multi-model routing

yes

Stack signals

  • Rust CLI
  • Container sandbox
  • MCP

Shared model stack

Other tracked products running on the same foundation models — a quick read on how much of the catalog moves when one of these models changes.

green disclosed · amber inferred · grey unattributed. Aliases are folded into one model; provider concentration counts only models with an established vendor.

Reported scale

Reference data. Each figure is whatever the source actually said — weekly users, downloads, revenue run-rate — with its own definition and date. These are not comparable between tools and are never used to rank anything.

No public usage figure on record for this product.

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Products in other segments that name one of Codex's models in their stack.

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Change history

  • version

    Codex moved to Codex

    GPT-6 AstraCodex

    source
  • capability

    New capabilities: Sandboxing

    49 tracked50 tracked · +Sandboxing

    source
  • capability

    New capabilities: Agent workflows

    48 tracked49 tracked · +Agent workflows

    source
  • version

    Codex moved to GPT-6 Astra

    CodexGPT-6 Astra

    source
  • version

    Codex moved to Codex

    0.154.0Codex

    source
  • version

    Codex moved to 0.154.0

    GPT-6 Astra0.154.0

    source
  • capability

    New capabilities: MCP connections

    47 tracked48 tracked · +MCP connections

    source
  • version

    Codex moved to GPT-6 Astra

    0.153.4GPT-6 Astra

    source
  • version

    Codex moved to 0.153.4

    GPT-6 Astra0.153.4

    source
  • capability

    New capabilities: Git integration

    46 tracked47 tracked · +Git integration

    source
  • version

    Codex moved to 5.6

    Codex5.6

    source
  • version

    Codex moved to Codex

    5.6Codex

    source
  • model

    Codex added GPT-4 to its model stack

    5.6 Sol, GPT-5.2, GPT-5.2-Codex, GPT-5.4, GPT-5.6, GPT-5.6 Luna, GPT-5.6 Sol, GPT-5.6 Terra, GPT-Live, gpt-oss5.6 Sol, GPT-4, GPT-5.2, GPT-5.2-Codex, GPT-5.4, GPT-5.6, GPT-5.6 Luna, GPT-5.6 Sol, GPT-5.6 Terra, GPT-Live, gpt-oss

    source
  • capability

    New capabilities: Browser use

    45 tracked46 tracked · +Browser use

    source
  • version

    Codex moved to GPT-6 Astra

    5.6GPT-6 Astra

    source
  • model

    Codex added GPT-6 Astra to its model stack

    5.6 Sol, GPT-4, GPT-5.2, GPT-5.2-Codex, GPT-5.4, GPT-5.6, GPT-5.6 Luna, GPT-5.6 Sol, GPT-5.6 Terra, GPT-Live, gpt-oss5.6 Sol, GPT-4, GPT-5.2, GPT-5.2-Codex, GPT-5.4, GPT-5.6, GPT-5.6 Luna, GPT-5.6 Sol, GPT-5.6 Terra, GPT-6 Astra, GPT-Live, gpt-oss

    source
  • capability

    New capabilities: GitLab integration, Scheduled tasks

    43 tracked45 tracked · +GitLab integration, Scheduled tasks

    source
  • capability

    New capabilities: Browser extension

    42 tracked43 tracked · +Browser extension

    source
  • version

    Codex moved to 5.6

    5.6 Sol5.6

    source
  • version

    Codex moved to 5.6 Sol

    5.65.6 Sol

    source
  • capability

    New capabilities: Git support, Computer History

    40 tracked42 tracked · +Git support, Computer History

    source
  • model

    Codex added gpt-oss to its model stack

    5.6 Sol, GPT-5.2, GPT-5.2-Codex, GPT-5.4, GPT-5.6, GPT-5.6 Luna, GPT-5.6 Sol, GPT-5.6 Terra, GPT-Live5.6 Sol, GPT-5.2, GPT-5.2-Codex, GPT-5.4, GPT-5.6, GPT-5.6 Luna, GPT-5.6 Sol, GPT-5.6 Terra, GPT-Live, gpt-oss

    source
  • capability

    New capabilities: Browser

    39 tracked40 tracked · +Browser

    source
  • version

    Codex moved to 5.6

    5.6 Sol5.6

    source
  • capability

    New capabilities: cloud

    38 tracked39 tracked · +cloud

    source
  • version

    Codex moved to 5.6 Sol

    5.65.6 Sol

    source
  • model

    Codex added 5.6 Sol to its model stack

    GPT-5.2, GPT-5.2-Codex, GPT-5.4, GPT-5.6, GPT-5.6 Luna, GPT-5.6 Sol, GPT-5.6 Terra, GPT-Live5.6 Sol, GPT-5.2, GPT-5.2-Codex, GPT-5.4, GPT-5.6, GPT-5.6 Luna, GPT-5.6 Sol, GPT-5.6 Terra, GPT-Live

    source
  • capability

    New capabilities: cloud environment

    37 tracked38 tracked · +cloud environment

    source
  • version

    Codex moved to 5.6

    GPT-5.65.6

    source
  • capability

    New capabilities: code generation, code review, cli

    31 tracked37 tracked · +code generation, code review, cli, ide extension, agent, computer use

    source
  • version

    Codex moved to GPT-5.6

    5.6GPT-5.6

    source
  • model

    Codex added GPT-5.4 to its model stack

    GPT-5.2, GPT-5.2-Codex, GPT-5.6, GPT-5.6 Luna, GPT-5.6 Sol, GPT-5.6 Terra, GPT-LiveGPT-5.2, GPT-5.2-Codex, GPT-5.4, GPT-5.6, GPT-5.6 Luna, GPT-5.6 Sol, GPT-5.6 Terra, GPT-Live

    source
  • capability

    New capabilities: CLI, Cloud

    29 tracked31 tracked · +CLI, Cloud

    source
  • version

    Codex moved to 5.6

    GPT-5.65.6

    source
  • capability

    New capabilities: ChatGPT Voice, Security scan

    27 tracked29 tracked · +ChatGPT Voice, Security scan

    source
  • version

    Codex moved to GPT-5.6

    5.6GPT-5.6

    source
  • capability

    New capabilities: CLI customization, IDE extension

    25 tracked27 tracked · +CLI customization, IDE extension

    source
  • capability

    New capabilities: Code interpreter

    24 tracked25 tracked · +Code interpreter

    source
  • version

    Codex moved to 5.6

    GPT-5.65.6

    source
  • capability

    New capabilities: Voice, Plugins

    22 tracked24 tracked · +Voice, Plugins

    source
Subscribe to Codex changes

Codex compared

Straight head-to-head pages against the busiest products in Coding.

How to cite this page

Free to cite and reuse under CC BY 4.0. Permalink: https://tomorrow.aliensquad.ai/tools/codex

APA
Tomorrow. (2026). Codex — version, pricing and model stack [Data set entry]. AlienSquad. Retrieved 2026-09-17, from https://tomorrow.aliensquad.ai/tools/codex
BibTeX
@misc{tomorrow-tools-codex,
  author       = {{Tomorrow}},
  title        = {Codex — version, pricing and model stack},
  year         = {2026},
  publisher    = {AlienSquad},
  howpublished = {\url{https://tomorrow.aliensquad.ai/tools/codex}},
  note         = {Accessed: 2026-09-17}
}