Comparison
Codex vs Devin (Cognition): which one to choose in 2026?
Codex and Devin (Cognition) are two comparable tools. Here's the head-to-head, criterion by criterion, to choose based on your real-world use.
Detailed comparison
| Criterion |  Codex |  Devin (Cognition) |
|---|---|---|
| Pricing model | Paid | Paid |
| Price | Depends on the OpenAI subscription | Free · Pro $20/mo · Max $200 |
| Level | Pro | Pro |
| Verdict | Recommended | Recommended |
| Best for | Developers in the OpenAI world who want to delegate coding tasks to an agent. | Dev teams who want to delegate end-to-end engineering tasks to an agent. |
| Categories | Code | Code |
Each tool in brief
Strengths
- Agent that understands and edits a repo
- CLI tool + integrations
- Backed by OpenAI's code models
Weaknesses
- Generated code must be reviewed and tested
- Access/quotas depend on the plan
- Learning curve for the agent
Who is it for? Developers in the OpenAI world who want to delegate coding tasks to an agent.
Strengths
- Truly autonomous agent (plan→PR)
- Delegates whole engineering tasks
- Human supervision possible
Weaknesses
- Usage cost (ACU) to watch
- Output to review and test
- Not suited to every task
Who is it for? Dev teams who want to delegate end-to-end engineering tasks to an agent.
Our verdict
No universal winner: it depends on your need. If you're after "Developers in the OpenAI world who want to delegate coding tasks to an agent.", Codex is the better pick. If it's more "Dev teams who want to delegate end-to-end engineering tasks to an agent.", go with Devin (Cognition). Models move fast — check the latest versions and current pricing before deciding.
