Claude Code CLI Outperforms Every GUI Agent — Researchers Say the Phone Screen Might Be Obsolete

A new study argues that mobile agents don't need to interact with phone screens via GUI—they can use the device’s command-line interface (CLI) instead. Researchers evaluated three coding agents (Claude Code, Terminus-2, mini-swe-agent) on AndroidWorld and MobileWorld without any mobile-specific training, comparing them against three reproducible GUI baselines (GUI-Owl-1.5-32B, MAI-UI, Qwen3-VL-32B). Claude Code Opus 4.7 reached 71.8% on AndroidWorld and 51.9% on MobileWorld, outperforming every GUI baseline (best: 69.3% and 43.2%). Oracle CLI solutions hit 88.8% and 86.3%, showing substantial headroom.

The CLI advantage is not just performance—efficiency is key. CLI agents completed tasks in significantly fewer steps (10.7 vs 18.6). To cover real-world intents beyond GUI scope, the team created the CLI-Advantage Task Suite (45 templates across five categories: bulk operations, multi-condition filtering, aggregation, cross-app workflows, hidden device state). In every category, CLI agents beat all GUI baselines. The authors will open-source agent implementations, oracle solutions, and evaluation infrastructure, inviting further research into CLI-first mobile agent design.