78
Stack Score
Editorial pick✓ Verified working
OpenAI Codex (2025)
Cloud-based software engineering agent from OpenAI.
Try OpenAI Codex (2025)✓ Free trial available
Best for
Engineers who want a parallel, async coding agent that drives a sandboxed dev environment from a ChatGPT or VS Code prompt.
At a glance
- Pricing
- freemiumfrom $20/mo
- Setup time
- 5 minutes
- Learning curve
- easy
- Last verified
- 5/22/2026
What we love
- ✓Strong agentic completion on long tasks
- ✓Parallel execution unlocks new workflows
- ✓Tight GitHub integration
Where it falls short
- −Cloud sandbox slows iteration vs local
- −Plus tier limits hit fast
- −No offline mode
Pricing
4 tiers
Plus
$20
per month
- ✓Generous Codex usage
- ✓ChatGPT trigger
Pro
$200
per month
- ✓Highest limits
- ✓Priority
Team
$30
per user/month
- ✓Codex + ChatGPT
- ✓Workspace
Enterprise
Custom
contract
- ✓Audit
- ✓SSO
- ✓Higher limits
Why we picked it
The 2025 Codex is OpenAI's answer to Claude Code — a true SWE agent that runs in a cloud sandbox. Useful for backlog grinding while you're in meetings.
Overview
Cloud-based software engineering agent from OpenAI. Engineers who want a parallel, async coding agent that drives a sandboxed dev environment from a ChatGPT or VS Code prompt.
Key features
- ●Codex-1 reasoning model
- ●Cloud sandbox per task
- ●Parallel task execution
- ●ChatGPT, CLI, IDE, GitHub triggers
- ●Reads your repo on connect
- ●PR-style summaries
- ●Internet-off by default for safety
Best use cases
Backlog batch
Hand 5 small tickets off and review PRs an hour later.
Test generation
Spin up coverage for a module while you focus elsewhere.
Integrations
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