The comparison
| Decision factor | Aider | Archiet |
|---|---|---|
| Terminal-based pair programming | Excellent. Git-aware, multi-file edits, runs locally. | Out of scope — Archiet generates ZIPs, doesn't operate inside them. |
| Model flexibility | Strong — works with Claude, GPT-4, Gemini, DeepSeek, local models. | Internal: 6-provider cascade with multi-key failover (OpenRouter → Anthropic → OpenAI → Google → DeepSeek → HuggingFace). The output codebase is the artifact; the LLM choice is internal. |
| Greenfield codebase generation | Possible but manual — you'd prompt Aider through scaffolding. | Designed for it. Twelve target stacks. Deterministic pipeline. |
| Architecture documentation | Whatever you ask for. | Auto-generated: ADRs in MADR v4 under docs/decisions/, one per material decision. |
| Compliance docs | Out of scope. | DPIA / HIPAA / PCI / SOX populated from the entity model when flagged. |
| Multi-stack support | Whatever language you're in. | Twelve target stacks: Flask, FastAPI, Django, NestJS, Laravel, Rails, .NET, Salesforce Apex, SAP CAP, Dynamics 365, Go, Java. |
| Determinism | LLM-driven — same prompt can produce different code across runs. | Deterministic-first. Templates are versioned Jinja2; structural decisions are rule-based. |
| Pricing model | Open-source. You bring your own LLM API keys (or use local models). | Per-workspace SaaS. Builder $149/mo, Pro $599/mo, Team $1,499/mo, Agency $2,999/mo. |
| Best fit | Working inside an existing codebase, in the terminal, with a CLI workflow. | Greenfield production codebase + handoff pack. |
| Worst fit | Greenfield production work where determinism and documented decisions matter. | Inside-codebase task where you want a CLI pair programmer. |
The workflow that uses both: Archiet generates the codebase + docs/ pack. Aider is the daily driver inside that codebase for terminal-native developers who prefer not to leave their CLI workflow.
There's no rivalry here. Aider's value is the open-source, local-first, terminal-native pair-programming experience. Archiet's value is "I have a PRD and I need a production codebase + handoff docs by tomorrow." Different problems entirely.
The only place we'd push back: using Aider (or any pair programmer) to greenfield a production codebase by prompting it through every architectural decision. The result tends to drift — the database choice ends up in three different PRs, the auth flow is reimplemented twice, the structure varies per session. Determinism matters when nobody is going to clean it up later.
What you get
The generated ZIP from Archiet always includes:
- The codebase in your chosen stack
docs/decisions/— ADRs in MADR v4docs/traceability/matrix.md+.csv— story-to-code mappingdocs/compliance/— populated regulatory documents (when flagged)docs/security/posture.md— attack surface, controls- Quality score, Synthetic Boot Test result
Once you have the codebase, run Aider inside it. Both tools win when paired correctly.
CTA
Try Archiet — free plan, no credit card. archiet.com.
Keep Aider for the inside-codebase work. Use Archiet for the codebase that wraps around it.