Claude Code vs Gemini CLI
Claude Code と Gemini CLI をワークフロー、価格、プライバシー、モデル対応、用途で比較します。
情報確認日 2026年8月29日
Claude Code
Claude Code remains a leading terminal-native coding agent. The August 2026 cost and feedback tools make it more useful for teams operating Claude-based applications, not just editing repositories.
Gemini CLI
Gemini CLI is worth documenting as an important open-source Google terminal agent, but new individual users should strongly consider Antigravity CLI because Google has made it the forward migration path. Existing users should preserve working configs, review quotas, and plan migration before consumer Gemini CLI service changes take effect.
主な違い
ワークフロー
Claude Code is Anthropic's terminal coding agent for repository work, subagents, hooks, MCP, and automation, with growing operational tooling for API cost analysis and feedback.
Gemini CLI is Google’s open-source terminal coding agent for Gemini-powered development workflows, now positioned as a legacy tool transitioning toward Antigravity CLI for future agent-first development.
オープンソース
いいえ
はい
機能比較
| 項目 | Claude Code | Gemini CLI |
|---|---|---|
| 主なワークフロー | Claude Code is Anthropic's terminal coding agent for repository work, subagents, hooks, MCP, and automation, with growing operational tooling for API cost analysis and feedback. | Gemini CLI is Google’s open-source terminal coding agent for Gemini-powered development workflows, now positioned as a legacy tool transitioning toward Antigravity CLI for future agent-first development. |
| タイプ | CLI コーディングエージェント | CLI コーディングエージェント |
| エディタ基盤 | CLI | CLI |
| 価格モデル | フリーミアム | フリーミアム |
| 開始価格 | $20 | $0 |
| 無料プラン | いいえ | はい |
| オープンソース | いいえ | はい |
| ローカルモデル | いいえ | いいえ |
| BYOK | はい | はい |
| 対応プラットフォーム | macOS, Linux, Windows, Terminal, VS Code, Cursor, VS Code forks, JetBrains IDEs, Claude desktop app, GitHub Actions, Claude Agent SDK | macOS, Linux, Windows, Terminal, Node.js/npm, GitHub Actions, Google AI Studio, Vertex AI, Google Cloud, Zed via agent integrations where supported |
| モデル | Claude Opus 4.8, Claude Sonnet 4.6, Claude Haiku 4.5 | Gemini 2.5 Pro, Gemini models via Gemini API, Gemini models via Vertex AI |
| エンタープライズ機能 | Team and Enterprise account administration, Central billing, Usage analytics, SSO support on organization plans, Admin controls, Enterprise deployment support, GitHub Actions integration, Claude Agent SDK access, Cloud provider deployment options, Security and compliance review through Anthropic enterprise channels | Vertex AI authentication, Google Cloud project-based usage, Gemini Code Assist enterprise workflows, Quota management through Google Cloud and Code Assist plans, GitHub Actions automation, MCP server integration, Enterprise migration path to Antigravity CLI and Google Antigravity |
| 向いている用途 | Terminal-first developers, Large refactors, Repository exploration, Debugging failing tests, Writing and updating tests, Code review preparation, Documentation automation, GitHub issue and PR workflows, Teams already using Claude, Developers who want a managed frontier-model coding agent | Existing Gemini CLI users, Terminal-first Gemini workflows, Developers using Google AI Studio or Vertex AI, Codebase exploration, Bug fixing, Test generation and test coverage improvements, GitHub issue triage, Pull request review automation, MCP-connected development tasks, Teams planning migration to Antigravity CLI |
| 向いていない用途 | Users who need local model execution, Developers who mainly want inline autocomplete, Non-technical users looking for a visual prompt-to-app builder, Teams requiring provider-agnostic model routing, Users who want a fully open-source coding agent, Projects where agentic shell actions are not allowed by security policy | New individual users who want Google’s forward-looking coding agent platform, Users who need local model execution, Developers who want provider-agnostic model routing, Non-technical users looking for prompt-to-app builders, Teams that cannot allow AI agents to read files or run commands, Users who want a full AI-native editor rather than a terminal agent |
用途別の向き不向き
Claude Code lists more team or enterprise controls.
Gemini CLI is marked as open source.
価格比較
Claude Code
- API Pay-as-you-goUsage-based
Use Claude Code with a Claude Console account and pay standard Claude API token rates.
- Claude Pro$20 / month
$17/month when billed annually. Includes Claude Code with shared Claude plan usage limits.
- Claude Max 5x$100 / month
Higher individual usage tier with Claude Code included and about 5x Pro capacity per session.
- Claude Max 20x$200 / month
Highest individual usage tier with Claude Code included and about 20x Pro capacity per session.
- Claude Team$25+ / user/month
Team Standard starts at $25/user/month monthly or $20/user/month annually; Premium is available at higher usage and feature levels.
Gemini CLI
- Individual Free$0 / month
Free individual Gemini CLI access through Gemini Code Assist for individuals, with Google account authentication and quota limits. Consumer support transitions to Antigravity CLI on June 18, 2026.
- Google AI Pro$19.99 / month
Google AI plan with higher Gemini CLI and AI-tool usage limits while Gemini CLI remains available for the plan.
- Google AI UltraPlan-dependent / month
Higher-usage Google AI tier with expanded access to Google AI features and higher developer-tool quotas where supported.
- Gemini API KeyUsage-based
Use Gemini CLI with a Google AI Studio API key and pay Gemini API token-based pricing.
- Vertex AI / EnterpriseUsage-based
Use Gemini CLI with Vertex AI or enterprise Google Cloud authentication for professional and organizational workflows.
プライバシーとセキュリティ
Claude Code
Claude Code may process prompts, codebase context, command output, files, tool calls, and repository metadata to provide coding assistance. Privacy and retention depend on whether the user authenticates through a Claude subscription, Anthropic API, or cloud provider deployment such as Bedrock, Vertex AI, or Foundry. Users should keep secrets out of prompts and source files, use environment variables or secret stores, and review permissions before allowing agentic actions.
Gemini CLI
Gemini CLI can send prompts, local project context, file contents, command output, MCP tool results, and repository metadata to Google or the selected Google Cloud model endpoint depending on authentication method. Users should avoid exposing secrets, credentials, customer data, production tokens, or private files in prompts, terminal output, MCP tools, or files included in context. Extra caution is needed when running Gemini CLI against untrusted repositories because terminal agents can be affected by malicious instructions embedded in project files.
Claude Code が向いている場合
- Terminal-first developers
- Large refactors
- Repository exploration
- Debugging failing tests
- Writing and updating tests
Gemini CLI が向いている場合
- Existing Gemini CLI users
- Terminal-first Gemini workflows
- Developers using Google AI Studio or Vertex AI
- Codebase exploration
- Bug fixing
Claude Code を避けるべき場合
- Users who need local model execution
- Developers who mainly want inline autocomplete
- Non-technical users looking for a visual prompt-to-app builder
- Teams requiring provider-agnostic model routing
- Users who want a fully open-source coding agent
Gemini CLI を避けるべき場合
- New individual users who want Google’s forward-looking coding agent platform
- Users who need local model execution
- Developers who want provider-agnostic model routing
- Non-technical users looking for prompt-to-app builders
- Teams that cannot allow AI agents to read files or run commands