9 pages for --effort.

Manage multiple agents with agent view Claude Code CLI · in the page agent-view …with-ultracode), open agent view from your shell with [`claude agents --effort ultracode`](#dispatch-defaults) instead; the dispatch input doesn't accept `/effort ultracode` * **Fast mode**: `/fast on… CLI reference Claude Code CLI · in the page cli-reference …completed background sessions). Pass `--permission-mode`, `--model`, `--effort`, or `--agent` to set [defaults for dispatched sessions](/docs/en/agent-view#permission-mode-model-and-effort). Accepts `… Environment variables Claude Code CLI · in the page env-vars …erride `ANTHROPIC_MODEL`, while `CLAUDE_CODE_EFFORT_LEVEL` overrides `--effort` and `/effort`. When a variable interacts with another configuration source, its row in the [Variables](#variables) list… Model configuration Claude Code CLI · in the page model-config …en't offered in the `/effort` picker, and naming a higher level with `--effort` or `/effort` runs at the cap instead. If you start a plain-text `--print` run with `--effort` above the cap, a warning o… Claude Code settings Claude Code CLI · in the page settings …itten automatically when you run `/effort` with one of those values. `--effort` and [`CLAUDE_CODE_EFFORT_LEVEL`](/docs/en/env-vars) override this for one session. See [Adjust effort level](/docs/en/mo… Example settings files Claude Code CLI · in the page settings-example …5 above its default high level; /effort saves a level per model, and --effort sets one for a single session "modelSettings": { "claude-sonnet-5": { "effortLevel": "xhigh" } }, // Vim keybin… All settings Claude Code CLI · in the page settings-reference …higher token spend * **Default**: unset * **Per-session overrides**: `--effort` takes precedence over this key for one session, and [`CLAUDE_CODE_EFFORT_LEVEL`](/docs/en/env-vars) takes precedence ove… Week 20 · May 11–15, 2026 Claude Code CLI · in the page whats-new/2026-w20 …gs`, `--mcp-config`, `--plugin-dir`, `--permission-mode`, `--model`, `--effort`, `--dangerously-skip-permissions`) to configure background sessions, and `claude agents --cwd <path>` scopes the session… Orchestrate subagents at scale with dynamic workflows Claude Code CLI · in the page workflows …`` To start a session with ultracode already on, launch with `claude --effort ultracode`, which also sets the effort level to `xhigh`. To turn it on from the `/effort` slider, press `Tab` to flip th…