Claude Code vs Gemini CLI (2026)

Claude Code costs $20 a month on Anthropic's Pro plan billed monthly, or $17 a month billed annually. Max starts at $100 a month. The $0 Free Claude plan does not include it. Gemini CLI has a free tier that starts with no sales call. You install it and sign in with a Google account, or use a free-tier Gemini API key. For paid use, see current pricing.

Each is tied to one lab's models. Claude Code runs only Claude models, and Gemini CLI's model picker lists only Gemini options. Neither offers GPT or open models. Gemini CLI's source is public on GitHub under Apache 2.0, and the project invites contributions and community extensions. Claude Code's repository carries an all-rights-reserved licence. It holds plugins and docs, not the CLI source.

Claude Code goes further without a person watching. Its auto mode has a classifier approve tool calls, and routines and background sessions run unattended, including in the cloud. It runs in GitHub Actions and GitLab CI/CD pipelines. Gemini CLI asks before any write or shell call by default. A yolo mode approves every tool, and headless mode gives scripts a JSON interface with documented exit codes. In non-interactive runs, confirmation prompts become denials, so unattended CI needs explicit policy rules.

Claude Code publishes SOC 2 Type 2 and ISO 27001 artefacts at its Trust Center, with HIPAA-ready and zero data retention options on Enterprise. Gemini CLI names no certificate on its own pages. Enterprise security and compliance is claimed for the Vertex AI route under Google Cloud terms. Commercial Claude plans are no-training by default, and Pro and Max users switch training off in privacy settings. On Gemini CLI, what happens to prompts depends on the service you sign in with, and AI Studio's free tier says data may be used to improve products.