Editorial status: Source-researched draft. Recheck product defaults, availability, pricing, and terms before publication.
Quick answer
OpenCode and Aider are terminal-oriented and support flexible model workflows, but they structure agents, permissions, context, and Git interaction differently. Neither open source nor terminal execution alone guarantees security.
A fair comparison method
- Start from the same clean branch
- use the same provider and model where possible
- compare command access, diff quality, commits, and token usage.
Keep the model, task, repository state, test suite, and permission boundary as similar as practical. If one product uses a cloud runtime and another runs locally, document that difference rather than hiding it inside one score.
Security criteria
Compare filesystem scope, command approval, outbound network policy, credential handling, extension or MCP trust, logging, retention, and external-action permissions. A polished approval dialog is useful, but it is not equivalent to operating-system or network isolation.
Quality and cost criteria
Record whether the task was completed, which tests passed, how much human correction was required, wall-clock time, and total metered usage. Treat advertised benchmarks and startup times as vendor claims unless you can reproduce their conditions.
What this article does not claim
Affiliate availability, sponsorship, popularity, and GitHub stars do not determine the editorial conclusion. An undocumented feature is marked unverified rather than assumed absent. No universal winner is declared because deployment needs differ.
Bottom line
Choose the option whose verified controls and observed workflow match your actual environment. Repeat the evaluation when major models, defaults, or pricing change.