{"id":5523,"date":"2026-08-30T22:50:42","date_gmt":"2026-08-30T13:50:42","guid":{"rendered":"https:\/\/donguri3.net\/server-tech\/ai-development-environment-comparison-2\/"},"modified":"2026-08-30T22:50:43","modified_gmt":"2026-08-30T13:50:43","slug":"ai-development-environment-comparison","status":"publish","type":"post","link":"https:\/\/donguri3.net\/en\/server-tech\/ai-local-llm\/ai-development-environment-comparison\/","title":{"rendered":"Comparison of Major AI Service Development Environments: VSCode, CLI, and Standalone IDEs"},"content":{"rendered":"

The official Gemini extension for VSCode (Gemini Code Assist Individual tier) and Gemini CLI, which have long been used within VSCode, have been discontinued as part of Google’s integration and consolidation strategy for development tools. The migration is now underway toward a standalone editor (GUI) called “Google Antigravity” and “Antigravity CLI” (CUI).<\/p>\n

For developers who have subscribed to monthly plans such as “Google AI Pro” and enjoyed the perk of flat-rate Gemini usage within VSCode, this sudden shift presents a major challenge in that they can no longer use their familiar development workflows.<\/p>\n

Optimizing Development Tool Configurations and Cost Performance<\/h2>\n

The purpose of this article is to comprehensively organize the development interface forms and pricing structures provided by major AI services (Google, OpenAI, Anthropic, Microsoft, and GitHub), enabling readers to reconstruct the most efficient development environment while minimizing unnecessary expenses.<\/p>\n

Our goal is to clearly distinguish between everyday AI chat usage in web browsers and code generation functions in local development environments like VSCode, allowing you to select tools that match your personal development style.<\/p>\n

Structural Confusion Between Flat-Rate Subscriptions and API Pay-As-You-Go Billing<\/h2>\n

The most common pitfall when building a development environment is confusing “flat-rate monthly subscriptions for web chat and the like” with “pay-as-you-go developer APIs.”<\/p>\n

For instance, when using third-party extensions like “Roo Code” or “Cline” inside VSCode, an API key is required regardless of whether you have a web subscription, and pay-as-you-go billing (post-paid charges) based on the token volume consumed will occur separately. There are countless cases where developers suffer from unexpected charges or integration errors due to the misconception that “paying a monthly flat fee means API usage is also unlimited.”<\/p>\n

Comparison of Development Interfaces (GUI\/CLI\/Standalone IDE) for Major AI Services and Tools<\/h2>\n

We have tabulated the access methods deployed by major vendors (browser UI, VSCode extensions, CLI, and standalone IDEs) along with the usage conditions under flat-rate tiers.<\/p>\n

Major AI Service Development Environment and Structure Comparison Table<\/p>\n\n\n\n\n\n\n\n\n\n\n<\/colgroup>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
#<\/span><\/td>\nProvider<\/span><\/td>\nPlan Name<\/span><\/td>\nBase Price<\/span><\/td>\nBrowser
\nChat UI<\/span><\/td>\n		(1) Official VSCode Extension
\n(GUI)<\/span><\/td>\n		(2) Official CLI
\n(CUI)<\/span><\/td>\n		(3) Official Standalone IDE \/
\nApp (GUI)<\/span><\/td>\n		\n
\n
Development Usage Conditions under Flat Rate<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n
1<\/span><\/td>\nGoogle<\/span><\/td>\nGemini Free<\/span><\/td>\n0 JPY<\/span><\/td>\nYes<\/span><\/td>\nNone<\/span><\/td>\nNone<\/span><\/td>\nNone<\/span><\/td>\n\n
\n
No dev tool tier (Web chat only)<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n
2<\/span><\/td>\n<\/td>\nGoogle AI Pro<\/span><\/td>\nApprox. 2,900 JPY ($19.99)<\/span><\/td>\nYes<\/span><\/td>\nNone
\n<\/span>(*Old extension ended)<\/span><\/td>\n		Antigravity CLI<\/span><\/td>\nAntigravity IDE<\/span><\/td>\n\n
\n
CLI\/IDE available at no extra cost<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n
3<\/span><\/td>\n<\/td>\nGoogle AI Ultra<\/span><\/td>\nFrom 14,500 JPY<\/span><\/td>\nYes<\/span><\/td>\nNone
\n(*Old extension ended)<\/span><\/td>\n		Antigravity CLI<\/span><\/td>\nAntigravity IDE<\/span><\/td>\n\n
\n
Extra-large execution quota several times larger than Pro<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n
4<\/span><\/td>\nOpenAI<\/span><\/td>\nFree<\/span><\/td>\n0 JPY<\/span><\/td>\nYes<\/span><\/td>\nNone<\/span><\/td>\nNone<\/span><\/td>\nNone<\/span><\/td>\n\n
\n
No dev tool tier (Web chat only)<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n
5<\/span><\/td>\n<\/td>\nChatGPT Plus<\/span><\/td>\nApprox. 3,000 JPY ($20)<\/span><\/td>\nYes<\/span><\/td>\nNone
\n(*Requires Copilot, etc.)<\/span><\/td>\n		Codex CLI<\/span><\/td>\nChatGPT App
\n(Codex)<\/span><\/td>\n		\n
\n
App\/CLI available at no extra cost<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n
6<\/span><\/td>\n<\/td>\nChatGPT Pro<\/span><\/td>\nApprox. 30,000 JPY ($200)<\/span><\/td>\nYes<\/span><\/td>\nNone
\n(*Requires Copilot, etc.)<\/span><\/td>\n		Codex CLI<\/span><\/td>\nChatGPT App
\n(Codex)<\/span><\/td>\n		\n
\n
Unlimited \/ large-capacity quota for Codex \/ high-load models<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n
7<\/span><\/td>\nAnthropic<\/span><\/td>\nFree<\/span><\/td>\n0 JPY<\/span><\/td>\nYes<\/span><\/td>\nNone<\/span><\/td>\nNone<\/span><\/td>\nNone<\/span><\/td>\n\n
\n
No dev tool tier (Web chat only)<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n
8<\/span><\/td>\n<\/td>\nClaude Pro<\/span><\/td>\nApprox. 3,000 JPY ($20)<\/span><\/td>\nYes<\/span><\/td>\nClaude Code<\/span><\/td>\nClaude Code CLI<\/span><\/td>\nNone<\/span><\/td>\n\n
\n
VSCode extension\/CLI available at no extra cost<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n
9<\/span><\/td>\n<\/td>\nClaude Max<\/span><\/td>\nApprox. 15,000 JPY ($100)<\/span><\/td>\nYes<\/span><\/td>\nClaude Code<\/span><\/td>\nClaude Code CLI<\/span><\/td>\nNone<\/span><\/td>\n\n
\n
Ultra-heavy agent execution quota<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n
10<\/span><\/td>\nMicrosoft<\/span><\/td>\nCopilot Free<\/span><\/td>\n0 JPY<\/span><\/td>\nYes<\/span><\/td>\nNone<\/span><\/td>\nNone<\/span><\/td>\nNone<\/span><\/td>\n\n
\n
No dev tool tier (Web chat only)<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n
11<\/span><\/td>\n<\/td>\nCopilot Pro<\/span><\/td>\nApprox. 3,200 JPY<\/span><\/td>\nYes<\/span><\/td>\nNone<\/span><\/td>\nNone<\/span><\/td>\nNone<\/span><\/td>\n\n
\n
Not available for development (*For M365 Office)<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n
12<\/span><\/td>\nGitHub<\/span><\/td>\nCopilot Free<\/span><\/td>\n0 JPY<\/span><\/td>\nNo<\/span><\/td>\nGitHub Copilot<\/span><\/td>\nGitHub Copilot CLI<\/span><\/td>\nNone<\/span><\/td>\n\n
\n
Trial environment with monthly limits<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n
13<\/span><\/td>\n(MS Subsidiary)<\/span><\/td>\nCopilot Pro<\/span><\/td>\nApprox. 1,500 JPY ($10)<\/span><\/td>\nNo<\/span><\/td>\nGitHub Copilot<\/span><\/td>\nGitHub Copilot CLI<\/span><\/td>\nNone<\/span><\/td>\n\n
\n
Specialized for native VSCode (unlimited completion & chat)<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n
14<\/span><\/td>\n<\/td>\nCopilot Pro+ \/ Max<\/span><\/td>\n$39 to $100<\/span><\/td>\nNo<\/span><\/td>\nGitHub Copilot<\/span><\/td>\nGitHub Copilot CLI<\/span><\/td>\nNone<\/span><\/td>\n\n
\n
Optional AI model selection, large-capacity AI credits granted<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n
15<\/span><\/td>\nVarious APIs<\/span><\/td>\nAPI Pay-as-you-go<\/span><\/td>\nFully pay-as-you-go<\/span><\/td>\nNo<\/span><\/td>\nNo (*Requires Roo Code, etc.)<\/span><\/td>\nNo (*Requires third-party)<\/span><\/td>\nNone<\/span><\/td>\n\n
\n
Post-paid based on tokens used (*See below)<\/span><\/div>\n<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Post-paid based on tokens used (*See below)<\/span><\/p>\n

*For details on storage capacity, image generation features, Office integration, and other services included in each plan, please check the official comparison pages below.<\/p>\n