backends.md

Backends

Gralph supports multiple AI coding assistants.

Claude Code (Default)

npm install -g @anthropic-ai/claude-code
gralph start .
gralph start . --backend claude

Models: claude-opus-4-5

OpenCode

npm install -g opencode-ai
gralph start . --backend opencode
gralph start . --backend opencode --model google/gemini-1.5-pro

Models (provider/model format):

• opencode/example-code-model
• anthropic/claude-opus-4-5
• google/gemini-1.5-pro

Gemini CLI

npm install -g @google/gemini-cli
gralph start . --backend gemini

Models: gemini-1.5-pro

Codex CLI

npm install -g @openai/codex
gralph start . --backend codex

Models: example-codex-model

Setting Default Backend

Config file:

defaults:
  backend: opencode
  model: opencode/example-code-model

Environment:

export GRALPH_DEFAULTS_BACKEND=opencode

Check Installed Backends

gralph backends