Anthropic
Agentic coding in the terminal
- Version
- stable
- Cost
- from $20/mo
- Model
- Fable 5
OpenAI · #7 most active of 25 in Coding
A software engineering agent that runs tasks in parallel sandboxes and opens pull requests.
Trust score · Mostly verified
2 data points checked · 2026-09-14
Current version
Codex
Entry cost
from $20/mo
Changes / 30d
8
The short answers · verified September 15, 2026
Source: OpenAI — help.openai.com · Reusable under CC BY 4.0 — cite Tomorrow
Plus
$20
Pro
$200
Business
$25
API
usage-based
Free
Entry price over time
5.6 Sol
OpenAI
GPT-4
OpenAI
GPT-5.2
OpenAI
GPT-5.2-Codex
OpenAI
GPT-5.4
OpenAI
GPT-5.6
OpenAI
GPT-5.6 Luna
OpenAI
GPT-5.6 Sol
OpenAI
GPT-5.6 Terra
OpenAI
GPT-6 Astra
OpenAI
GPT-Live
OpenAI
gpt-oss
OpenAI
Context window
400K tokens
Public API
yes
Multi-model routing
yes
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.
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.
Anthropic
Agentic coding in the terminal
Cognition
Agentic IDE with flow awareness
Lovable
Build full-stack apps by chatting
Cognition
Autonomous software engineer that works asynchronous tickets.
AlibabaChina
Alibaba's coding assistant and agentic Qoder IDE.
AWSUnited States
AWS-native coding agent
Products in other segments that name one of Codex's models in their stack.
HubSpot
AI across the CRM
OpenAI
Browser-using assistant
Consensus
Evidence-based answers from science
Khan AcademyUnited States
AI tutor for students and teachers
ThoughtSpot
Agentic analytics
Enterprise agent builder with open model choice and governance.
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
sourceCodex 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
sourceNew capabilities: GitLab integration, Scheduled tasks
43 tracked45 tracked · +GitLab integration, Scheduled tasks
sourceNew capabilities: Git support, Computer History
40 tracked42 tracked · +Git support, Computer History
sourceCodex 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
sourceCodex 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
sourceNew capabilities: code generation, code review, cli
31 tracked37 tracked · +code generation, code review, cli, ide extension, agent, computer use
sourceCodex 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
sourceNew capabilities: ChatGPT Voice, Security scan
27 tracked29 tracked · +ChatGPT Voice, Security scan
sourceNew capabilities: CLI customization, IDE extension
25 tracked27 tracked · +CLI customization, IDE extension
sourceStraight head-to-head pages against the busiest products in Coding.
Free to cite and reuse under CC BY 4.0. Permalink: https://tomorrow.aliensquad.ai/tools/codex
Tomorrow. (2026). Codex — version, pricing and model stack [Data set entry]. AlienSquad. Retrieved 2026-09-17, from https://tomorrow.aliensquad.ai/tools/codex
@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}
}