Aider vs OpenCode: Side-by-Side Comparison 2026

Aider vs OpenCode comparison 2026. Side-by-side features, pricing & capabilities.

Aider is a CLI-based coding agent from Paul Gauthier (Open Source) — ai pair programming in your terminal. OpenCode is a CLI-based coding agent from SST — open-source terminal ai coding agent.

Aider

Open-source CLI tool for AI pair programming. Works with OpenAI, Claude, and other models to edit code in your local git repo.

  • ✓ Git-aware editing
  • ✓ Multi-file editing
  • ✓ Model agnostic
  • ✓ Voice coding
  • ✓ Image support

Free · 1 plan

OpenCode

Open-source terminal AI coding agent from SST. Free with BYOK, or use Go ($10/mo for curated open-source models), Zen (pay-per-token), or Black (flat-rate subscription at $20/$100/$200/mo, currently paused) for managed model access.

  • ✓ AI chat
  • ✓ Agentic mode
  • ✓ Multi-file editing
  • ✓ Terminal commands
  • ✓ Test generation

Free / $10/mo · 4 plans

Feature Aider OpenCode
Category CLICLI
Starting Price Free Free
Model Family Multi-model (any)Multi-model (any)
Voice Input ✓ —
Open Source Yes (Apache 2.0)Yes (MIT)

Pricing verified Mar 20, 2026. Aider pricing | OpenCode pricing

Share

Key Differences

  • Starting price: Aider starts at free / BYOK; OpenCode starts at $10/mo.
  • Open source: Aider: Yes (Apache 2.0). OpenCode: Yes (MIT).
  • Provider: Aider is built by Paul Gauthier (Open Source); OpenCode is built by SST.
  • Capabilities: Aider has voice input.

Which Should You Choose?

Choose Aider if you want a fully open-source tool with transparent development. Choose OpenCode if you want open-source terminal-based coding with model flexibility. Read our full reviews to see which fits your workflow.

Share