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Codex CLI vs Factory AIwhich AI code agent should you pick in 2026?

Codex CLI

OpenAI’s open-source terminal agent for refactors, audits and migrations.

💻CodeSemi-autonomousOpen source
CodeTool use
Factory AI

Autonomous "Droid" agent for end-to-end engineering with native AGENTS.md support.

💻CodeAutonomousSubscription · from $40
CodeTool useMemoryMulti-agent

Codex CLI vs Factory AI — specs

SpecCodex CLIFactory AI
Agent Rank70 / 100 (B)75 / 100 (A)
AutonomySemi-autonomousAutonomous
PricingFree · OSSSubscription · from $40
Open sourceYesNo
CapabilitiesCode, Tool useCode, Tool use, Memory, Multi-agent
Integrations2 apps4 apps
VerifiedVerified—
ReleasedApr 2025Oct 2025

Categories: Codex CLI → Code · Factory AI → Code

Agent Rank breakdown

Codex CLI
Agent Rank
70/ 100
BB-tier
自律性
8
機能
4
連携
4
料金
10
完成度
6
検証性
10

自律性、機能、連携、料金、成熟度、編集部の検証を基に自動算出。デプロイごとに更新されます。 どのように算出されているか?

Factory AI
Agent Rank
75/ 100
AA-tier
自律性
9
機能
8
連携
8
料金
7
完成度
7
検証性
6

自律性、機能、連携、料金、成熟度、編集部の検証を基に自動算出。デプロイごとに更新されます。 どのように算出されているか?

Pros & cons

Codex CLI
メリット
  • +Zero-install terminal workflow — agent where engineers already live
  • +Open source under permissive license; auditable end-to-end
  • +Ideal for one-shot refactors, audits, and migrations
デメリット
  • −No long-running session UI; not built for hour-long autonomous work
  • −Less polished than IDE-native alternatives
  • −You wire the model key + handle rate limits
Factory AI
メリット
  • +True end-to-end autonomy — Droid agent ships complete features without hand-holding
  • +Native AGENTS.md adopter — fits modern repo conventions out of the box
  • +Multi-agent coordination across linked repos for cross-service changes
デメリット
  • −Token-based pricing can spike on large refactors
  • −Zed-first; JetBrains support newer, VS Code on roadmap
  • −Less mature than Devin for very long-running autonomous sessions

Pricing

Codex CLI
Open source
無料
CLI-native engineers
  • +Apache-2.0 binary
  • +BYO OpenAI / Anthropic key
  • +Composable from Makefiles + scripts
Factory AI
Standard
$40/月
Individuals
  • +Droid autonomous agent
  • +Zed + JetBrains
  • +5M Standard Tokens/mo
おすすめ
Pro
$200/月
Engineering teams
  • +Unlimited Droids
  • +50M tokens/mo
  • +Multi-agent coordination
Enterprise
カスタム
Large orgs
  • +Custom token volume
  • +SSO + audit
  • +Dedicated support

Which one should you pick?

Codex CLI

Pick Codex CLI if cost is the main constraint or if auditability or self-hosting matters.

Try Codex CLI →
Factory AI

Pick Factory AI if you want the highest autonomy and the verification loop is in place.

Try Factory AI →

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Frequently asked

Should I pick Codex CLI or Factory AI in 2026?+

Pick Codex CLI if cost is the main constraint or if auditability or self-hosting matters. Pick Factory AI if you want the highest autonomy and the verification loop is in place. Most working teams running both can use Codex CLI for primary work and Factory AI for the workflows where its specific strengths matter.

What's the price difference between Codex CLI and Factory AI?+

Codex CLI starts at Free · OSS; Factory AI starts at Subscription · from $40. Codex CLI is the cheaper entry option. For team deployments the TCO can differ — use the AI Agent Rank TCO calculator for your specific volume.

Which is more autonomous, Codex CLI or Factory AI?+

Factory AI is the more autonomous of the two (Autonomous vs Semi-autonomous). Higher autonomy ships throughput faster but requires verification loops in place — see our autonomous-vs-copilot framing for when each tier wins.

Readers comparing Codex CLI and Factory AI also picked

Adjacent agents in the same category with overlapping capabilities — worth a side-by-side glance before you commit.

See more alternatives: alternatives to Codex CLI · alternatives to Factory AI
Want the real monthly cost at your volume? Run the TCO calculator →
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Codex CLI vs Factory AI (2026): which AI code agent wins? · AI Agent Rank