Codex CLI vs OpenCode
Codex CLI と OpenCode 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
Codex CLI
Codex CLI is evolving from a single terminal agent into a task orchestration surface. Cross-task references and interrupt hooks are meaningful for parallel work, provided teams maintain strong isolation and review.
OpenCode
OpenCode remains one of the strongest open and provider-flexible coding harnesses. OpenCode Go adds a simple $10 managed-model option without removing BYOK or turning the harness into a closed service.
主な違い
ワークフロー
OpenAI Codex CLI is a terminal coding agent that combines repository editing and command execution with task-to-task coordination, parallel workflows, hooks, and the broader Codex platform.
OpenCode is an open-source coding-agent harness for terminal, desktop, and IDE workflows with broad provider support, BYOK, and an optional OpenCode Go subscription for curated open models.
価格
フリーミアム
オープンソース
機能比較
| 項目 | Codex CLI | OpenCode |
|---|---|---|
| 主なワークフロー | OpenAI Codex CLI is a terminal coding agent that combines repository editing and command execution with task-to-task coordination, parallel workflows, hooks, and the broader Codex platform. | OpenCode is an open-source coding-agent harness for terminal, desktop, and IDE workflows with broad provider support, BYOK, and an optional OpenCode Go subscription for curated open models. |
| 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 | オープンソース |
| 開始価格 | $8 | $0 |
| 無料プラン | はい | はい |
| オープンソース | はい | はい |
| ローカルモデル | はい | はい |
| BYOK | はい | はい |
| 対応プラットフォーム | macOS, Linux, Windows, Terminal, Local project directories, VS Code-compatible IDE workflows via Codex IDE extension, Codex app, Codex SDK, GitHub Actions | macOS, Linux, Windows, WSL, Terminal, Desktop app, VS Code, Cursor, Windsurf, VSCodium, ACP-compatible editors, GitHub Actions |
| モデル | gpt-5.5, gpt-5.4, gpt-5.4 mini, gpt-5.3-codex-spark, OpenAI API, Azure OpenAI, Amazon Bedrock, Ollama, LM Studio | Claude, GPT, Gemini, GitHub Copilot, ChatGPT Plus, ChatGPT Pro, GLM-5.1, GLM-5, Kimi K2.7 Code, Kimi K2.6, MiMo-V2.5, MiMo-V2.5-Pro, MiniMax M3, MiniMax M2.7, Qwen3.7 Max, Qwen3.7 Plus, Qwen3.6 Plus, DeepSeek V4 Pro, DeepSeek V4 Flash, Local models |
| エンタープライズ機能 | Business workspace controls, SAML SSO, MFA, Codex seats, Workspace credits, SCIM, EKM, Role-based access control, User analytics, Domain verification, Audit logs, Compliance API usage monitoring, Data retention controls, Data residency controls, Managed configuration, Amazon Bedrock deployment option, FedRAMP-compatible local Codex configuration where supported | Centralized organization config, SSO integration, Internal AI gateway routing, Ability to disable other AI providers, Per-seat enterprise pricing, No token charge from OpenCode when using an internal LLM gateway, Share feature can be disabled, Private npm registry support through .npmrc, Implementation support, Roadmap support for self-hosted share pages |
| 向いている用途 | Terminal-first developers, Local repository editing, Multi-file bug fixes, Refactoring, Test generation, Codebase exploration, OpenAI model users, Developers who want configurable approvals and sandboxing, Teams already using ChatGPT or OpenAI API, Automation through Codex SDK or GitHub Actions | Terminal-first developers, Open-source AI coding workflows, Claude Code alternatives, BYOK model routing, Local model experiments, Developers who want to switch between multiple LLM providers, GitHub issue and pull request automation, Teams that want internal AI gateway control, Developers using VS Code, Cursor, Windsurf, or VSCodium with terminal-based agents, Cost-sensitive users who want optional open-model subscriptions |
| 向いていない用途 | Non-technical users who want a visual app builder, Developers whose main need is inline autocomplete, Teams that require a fully provider-neutral hosted product, Users who do not want to manage terminal setup or configuration, Projects where AI agents are not allowed to run shell commands, Workflows that require cloud Codex features while using only API-key authentication | Users who want a fully managed proprietary AI IDE with minimal setup, Non-developers building apps from prompts, Developers whose main need is inline autocomplete, Teams that require polished enterprise admin dashboards out of the box, Users who do not want to manage provider credentials, model selection, or usage limits, Highly sensitive projects using public share links or unapproved external providers |
用途別の向き不向き
Codex CLI lists more team or enterprise controls.
OpenCode supports more model/provider options or BYOK-style workflows.
価格比較
Codex CLI
- Free$0 / month
Included Codex access for quick coding tasks with limited usage.
- Go$8 / month
Lightweight Codex usage for smaller coding tasks.
- Plus$20 / month
Includes Codex on web, CLI, IDE extension, and iOS, plus latest Codex models and credit extension.
- ProFrom $100 / month
Higher Codex usage limits than Plus, including Pro-only access to GPT-5.3-Codex-Spark research preview.
- API KeyUsage-based
Use Codex in CLI, SDK, or IDE extension with API token billing; cloud features are not included.
OpenCode
- Open Source$0
MIT-licensed open-source coding agent. Users can install and run OpenCode locally with their own model credentials.
- Bring Your Own ModelUsage-based
Use external LLM providers through API keys, GitHub Copilot login, ChatGPT Plus/Pro login, local models, or OpenAI-compatible endpoints.
- OpenCode ZenPay-as-you-go
Optional curated model gateway with per-token pricing and usage limits for teams or individuals.
- OpenCode Go$10 / month
Optional provider with stable access to a curated set of open coding models; BYOK remains available.
- EnterpriseCustom
Per-seat enterprise plan with centralized config, SSO integration, internal AI gateway routing, and implementation support.
プライバシーとセキュリティ
Codex CLI
Codex CLI runs locally and can read project files, edit code, run commands, and persist local session history under CODEX_HOME unless configured otherwise. Data sent to models depends on authentication method, selected provider, ChatGPT workspace settings, API organization settings, MCP servers, and whether local OSS mode is used. Users should avoid exposing secrets in prompts, source files, command output, or connected tools, and should configure approvals, sandboxing, ignored paths, and history persistence for sensitive repositories.
OpenCode
OpenCode states that it does not store code or context data by default, with processing happening locally or through direct API calls to the selected AI provider. The main exception is the optional /share feature, which uploads conversation data to OpenCode-hosted share pages and creates public links. Privacy depends on provider choice, local model usage, enterprise gateway routing, share settings, and whether sensitive files, secrets, or production data are included in context.
Codex CLI が向いている場合
- Terminal-first developers
- Local repository editing
- Multi-file bug fixes
- Refactoring
- Test generation
OpenCode が向いている場合
- Terminal-first developers
- Open-source AI coding workflows
- Claude Code alternatives
- BYOK model routing
- Local model experiments
Codex CLI を避けるべき場合
- Non-technical users who want a visual app builder
- Developers whose main need is inline autocomplete
- Teams that require a fully provider-neutral hosted product
- Users who do not want to manage terminal setup or configuration
- Projects where AI agents are not allowed to run shell commands
OpenCode を避けるべき場合
- Users who want a fully managed proprietary AI IDE with minimal setup
- Non-developers building apps from prompts
- Developers whose main need is inline autocomplete
- Teams that require polished enterprise admin dashboards out of the box
- Users who do not want to manage provider credentials, model selection, or usage limits