Aider vs Tabby
Self-host pick — both replace GitHub Copilot (AI code completion / chat in the IDE).
Both Aider and Tabby self-host as a replacement for GitHub Copilot (AI code completion / chat in the IDE). Pick Aider if you want the lighter footprint — 5min `pip install aider-chat`, free cli; model cost is the line item — pair with ollama / vllm for $0 marginal cost. Pick Tabby if you need teams that want one centrally-hosted code-AI server with admin controls and per-developer usage tracking — 20min docker run with --gpus + plugin install and $200+/mo cloud gpu for the inference server; $0 on a workstation.
| Aideropen-source | Tabbyopen-source | |
|---|---|---|
| License | Apache-2.0 | Apache-2.0 |
| Setup time | 5min `pip install aider-chat` | 20min docker run with --gpus + plugin install |
| Monthly cost | Free CLI; model cost is the line item — pair with Ollama / vLLM for $0 marginal cost. | $200+/mo cloud GPU for the inference server; $0 on a workstation. Plugin overhead is negligible. |
| GitHub | Aider-AI/aider | TabbyML/tabby |
| Replaces | GitHub Copilot | GitHub Copilot |
Good fit for
Aider
Terminal-first developers who want a pair-programmer that operates on whole files and commits diffs to git.
Weak at:Inline tab-complete during typing — Aider is a chat/edit loop, not a ghost-text engine; pair with Continue if you want both.
Tabby
Teams that want one centrally-hosted code-AI server with admin controls and per-developer usage tracking.
Weak at:Chat / agentic edits — Tabby's strength is completion; for chat-heavy workflows pair with Continue or Aider.
In a terminal? npx -y github:SolvoHQ/os-alt-cli github-copilot prints GitHub Copilot's self-host options including both —
how the CLI works →
FAQ
Which is easier to self-host, Aider or Tabby?
Aider: 5min `pip install aider-chat`. Tabby: 20min docker run with --gpus + plugin install.
What does each cost to run?
Aider: Free CLI; model cost is the line item — pair with Ollama / vLLM for $0 marginal cost.. Tabby: $200+/mo cloud GPU for the inference server; $0 on a workstation. Plugin overhead is negligible.. Both projects are free and open source.
Do Aider and Tabby replace the same SaaS?
Yes — both are open-source alternatives to GitHub Copilot.