AI Services in Code Generation

Tools that automatically generate and autocomplete program code using AIFeaturing 38 AI services in total.

ジュールス

Jules

An asynchronous AI coding agent from Google. Connect a GitHub repository and describe a task, and Jules fixes bugs, writes tests, and updates dependencies in parallel on cloud virtual machines, all the way to creating a pull request. Free for up to 15 tasks a day, with higher limits as a Google AI Pro / Ultra benefit.

# コード生成# AIエージェント

キミ

Kimi

Kimi is an AI chat and agent service from Beijing-based Moonshot AI. Its flagship model Kimi K3.1 Pro (announced October 24, 2026; 1M-token context; weights due by November 4) handles slide creation, Deep Research, coding, and 3D creation. There is a free plan, paid plans start with Plus at $19/month, and the K3.1 Pro API costs $2 input / $10 output per 1M tokens. The web version has a Japanese display.

# 生成AI（LLM）# AIチャットボット# テキスト生成# コード生成# AIエージェント# API・SDK

キロ

Kiro

Kiro is AWS's agentic AI development tool. Its hallmark is spec-driven development — breaking prompts into requirements, design, and task documents before implementation — available via IDE, CLI, and web. It supports Claude and other AI models; the free plan includes 50 monthly credits, and paid plans start at $20/month (Pro). UI is English-only.

# コード生成# AIエージェント# 業務効率化

クウェン

Qwen

A family of large language models from China's Alibaba (Qwen / Tongyi Qianwen) and its conversational AI, Qwen Chat (Qwen Studio). The current flagship is Qwen3.8-Max. Multimodal across text, image, and video, it offers chat, image and video generation, web search, and code generation for free. Many models are open source; Japanese is supported.

# 生成AI（LLM）# AIチャットボット# テキスト生成# 画像生成# コード生成# 日本語対応

ラバブル

Lovable

An AI app builder (vibe coding) that turns a text description into a full-stack web app — frontend through backend — and publishes it in one click. The free plan needs no credit card and grants 5 build credits a day. Pro is $25 and Business $50 a month (annual billing gives two months free), and because plans are priced by credits rather than seats, workspace members are unlimited. You own the code you build.

# コード生成# ノーコード自動化# AIエージェント# デザイン生成

ギットハブ コパイロット

GitHub Copilot

GitHub Copilot is an AI coding assistance service provided by GitHub (a Microsoft subsidiary). In addition to code completion, it includes an agent mode that implements autonomously, a cloud agent that works in the cloud, automatic PR review, and the Copilot CLI. It can be used in VS Code, JetBrains, GitHub, the terminal, and more, and you can choose from major models such as Claude, GPT, and Gemini. For individuals there is the free Free plan, Pro $10, Pro+ $39, and Max $100; for businesses there are Business $19 and Enterprise $39 (per user/month, on a GitHub AI credit system).

# コード生成# AIモデル構築・管理# API・SDK# AIエージェント

カーソル

Cursor

Cursor is an AI coding agent (AI code editor) from Anysphere. A VS Code-based desktop app (macOS / Windows / Linux), it takes natural-language instructions and has an agent that understands your codebase handle planning, implementation, and fixes. You can choose its in-house Composer model, Grok, or frontier models from various providers, and it supports running multiple tasks in parallel, cloud agents, agentic code review by Bugbot, MCP, skills, and hooks, and privacy mode. A Cursor CLI and iOS app are also available. Pricing includes Hobby free, Pro $20, Pro+ $60, Ultra $200, and Teams $40 (per user, per month), among others.

# コード生成# AIモデル構築・管理# AIエージェント# 業務効率化# 日本語対応

クライン

Cline

Cline is an open-source AI coding agent that runs inside the editor and terminal you already use (built by Cline Bot Inc., Apache 2.0). You can use the same agent from a VS Code extension, JetBrains, a CLI, or an SDK, and with Plan/Act it separates planning from execution so you approve as it goes, autonomously handling multi-file edits and command execution. It supports every provider — Claude, GPT, Gemini, local models and more — and with bring your own key there is no vendor lock-in. The extension and CLI are open source and free for individuals (the only cost is usage-based model inference). Used by more than 8 million developers, with 66,000 GitHub stars.

# コード生成# AIモデル構築・管理# API・SDK# AIエージェント

ブイゼロ

v0

v0 is an AI full-stack web app builder from Vercel. Just describe what you want in plain language, and it generates a working app in minutes and publishes it live in seconds. Agentic by default, it autonomously handles planning, task creation, and even database connections, and it supports visual editing in Design mode, GitHub integration, one-click deployment to Vercel, and an iOS app. You can choose from the v0 Mini, Pro, Max, and Max Fast models, and pricing is credit-based with tiers such as Free $0, Plus $30, and Business $100 (per user, per month).

# コード生成# ノーコード自動化

リプリット

Replit

A development platform to build apps and websites with AI in the browser and deploy them, all in one place. Describe what you want and the AI agent Replit Agent (currently Agent 4) handles requirements, code generation, and publishing. Auth, DB, and hosting are built in; 50+ languages and real-time collaboration. Starter free, Core from $20/mo.

# コード生成# 生成AI（LLM）# AIエージェント

デヴィン

Devin

An autonomous AI software engineer from the startup Cognition (a coding agent). From a natural-language instruction it autonomously plans, implements, tests, and opens a Pull Request in its own environment, supporting multiple repos and parallel sessions. The current Devin 2 generation offers Core from $20/mo (metered ACU), Team $500/mo, and Enterprise, and integrates with GitHub/Slack/IDE and MCP/API.

# コード生成# AIエージェント# 自動化・省力化# 生産性向上

コデックス

Codex

Codex (ChatGPT's Codex) is an AI coding agent for software engineering offered by OpenAI. You can use it from ChatGPT, an IDE extension, the terminal (Codex CLI), and a macOS app, all linked through your ChatGPT account. Powered by frontier coding models, it completes work end to end from PRs to complex refactoring and migrations, runs in parallel across worktrees and the cloud, and supports skill learning, always-on background work, and code review. It's available on ChatGPT's paid plans (Plus/Pro/Business/Enterprise) plus the API, and the CLI is open source.

# コード生成# AIエージェント

コードラビット

CodeRabbit

An AI code review platform that connects to GitHub/GitLab/Azure DevOps/Bitbucket and auto-reviews pull requests. Beyond summaries, bug/security detection, and one-click fixes, it offers free IDE reviews (VS Code/Cursor) plus CLI and AI-agent loops. Used by 17,000 companies. OSS free / Pro from $24/seat.

# コード生成# 自動化・省力化# 生産性向上

クロード コード

Claude Code

Claude Code is an AI coding agent from Anthropic that works directly on your codebase. Centered on the terminal, it can also be used from your IDE (VS Code/JetBrains), the web, Slack, mobile, and GitHub to handle everything from building and debugging to shipping. Agentic search grasps your codebase in seconds, and it supports multi-file editing, issue-to-PR workflows, subagents, routines, and computer use. It runs locally and asks for permission before making changes. Pricing is included with Claude Pro/Max/Ultra (Pro from $20/Max $100/Ultra $200), while access via the Console is billed as pay-as-you-go API usage.

# コード生成

アンチグラビティ

Antigravity

Google's agent-first development platform where AI agents autonomously plan, execute, and verify across editor, terminal, and browser. Now Generally Available as a family of Antigravity 2.0 (Agent Manager)/CLI/SDK/IDE. Choose Gemini 3.x, Claude 4.6, GPT-OSS, and more; free for individuals (macOS/Windows/Linux).

# コード生成# 画像生成# デザイン生成# AIエージェント# 生産性向上# 品質向上・クリエイティブ支援

キロコード

Kilo Code

Kilo Code is an MIT-licensed open-source AI coding agent that runs the same way in VS Code, JetBrains, the CLI, and the cloud. You switch between purpose-built agents — Code, Plan, Ask, Debug, and Review — to generate code, refactor, chase bugs, and review changes. It supports 500+ models with mid-task switching, and charges no markup on AI inference: you pay the provider's rate. You can bring your own API keys or run local models with Ollama. Platform access is free for individuals and $15 per user per month for Teams. Anaconda acquired the company in July 2026, and Kilo Code now has more than 3 million users.

# コード生成# AIエージェント# API・SDK# 生産性向上# 日本語対応

クラウドフレア オーエス

Cloudflare OS

An open-source AI agent workspace from Cloudflare where everyone in your company can build apps, automate work, and safely access internal systems. It runs inside your own Cloudflare account (self-hosted / Apache 2.0). Every agent and app starts from zero permissions, and per-service Gatekeepers expose only a limited API. Via AI Gateway you can freely choose models and visualize and cap costs per person, team, or app. Outputs can be promoted into small personal apps (Gadgets) and shared.

# AIエージェント# 業務効率化# 自動化・省力化# 生産性向上# コード生成

サカナ フグ

Sakana Fugu

A multi-agent platform from Japan's Sakana AI that dynamically orchestrates several specialist LLMs behind a single API, behaving as if it were one model. Pricing runs on two tracks — $20/$100/$200 monthly plans and token billing, with Fugu Ultra at $5 input / $30 output per 1M tokens (rising to $10/$45 above a 272K context). There is no free tier, and orchestration tokens count toward the bill.

# 生成AI（LLM）# AIエージェント# コード生成# 開発・研究支援# 業務効率化

ヴァンナエーアイ

Vanna AI

An open-source (MIT) Text-to-SQL framework that generates accurate SQL from natural-language questions. Train it on your database's DDL, docs, and example SQL, and it generates runnable SQL via agentic retrieval. Now "Vanna 2.0 (The SQL Agent)" with user-aware row-level control and a web chat UI; the OSS core is free while managed Vanna Cloud is paid. Works with major DBs (Postgres, Snowflake, BigQuery) and LLMs (OpenAI, Anthropic).

# 検索エンジン・RAG# コード生成# AIエージェント# 生成AI（LLM）

スピークイージー

Speakeasy

A developer platform that auto-generates type-safe, production-ready SDKs in multiple languages (TypeScript, Python, Go, Java, C#, PHP, Ruby) from an OpenAPI spec. It also generates MCP servers, Terraform providers, and CLIs, and in 2026 has expanded into an "AI control plane" for discovering, securing, and governing AI agents and MCP servers across the enterprise.

# API・SDK# コード生成# AIエージェント

タスク

Tusk

A GitHub-integrated AI agent that analyzes pull-request code changes and auto-generates missing unit and API tests. Using codebase context and live production traffic, it runs tests in CI to catch regressions and improve coverage — positioned as a verification layer for AI-written code. YC-backed.

# コード生成# AIエージェント# 品質向上・クリエイティブ支援# 業務効率化

ソースグラフ

Sourcegraph

An enterprise code-intelligence platform that lets both humans and AI agents search, understand, and change large, complex codebases across all repositories. It offers cross-repo code search, natural-language Deep Search, large-scale Batch Changes, and an MCP server; its AI assistant Cody is now an Enterprise feature. (Note: its former agentic tool Amp was spun out into a separate company in December 2025.)

# コード生成# AIエージェント# 検索・レコメンド# 業務効率化# 生産性向上

タブナイン

Tabnine

An enterprise-focused AI coding platform emphasizing privacy and security. It provides in-IDE code completion, AI chat, and autonomous agents for code review, testing, and docs, with zero data retention (your code isn't used for training) and flexible deployment (SaaS/VPC/on-prem/air-gapped).

# コード生成# AIエージェント# 業務効率化# 生産性向上

マストラ

Mastra

An open-source AI agent development framework written in TypeScript. It integrates Agents/Tools/Workflows/RAG/Memory/Evals/Observability and lets you switch among LLMs like OpenAI, Anthropic, and Google Gemini. Under "build, observe, and improve," it suits building and running agents that run for days. The framework is free (OSS), with a hosted Mastra Platform available.

# コード生成# AIモデル構築・管理# API・SDK# AIエージェント

ジュニー

Junie

JetBrains' autonomous AI coding agent integrated into JetBrains IDEs. From a natural-language instruction it autonomously plans, edits multiple files, runs commands and tests, leveraging deep IDE context like the index and debugger. GA since June 2026. Supports major IDEs including the free IntelliJ IDEA Community, with selectable models (Claude 4.5, Gemini 2.5, etc.). Used via the JetBrains AI subscription (Free/Pro $10/Ultimate $30, credit-based).

# コード生成# AIエージェント# AIモデル構築・管理# 自動化・省力化# 日本語対応

トラエ

Trae

An AI-native IDE developed by ByteDance. Built on VS Code, it lets you switch between an IDE mode you control yourself and a SOLO mode where AI autonomously handles everything from requirements to implementation, testing, and deployment. It has the GPT-5 series, Gemini 3 series, Kimi, MiniMax, and ByteDance Seed built in, with Claude and others addable as custom models via API key. Pricing is token-based, from a free tier up to Ultra $100.

# コード生成# AIエージェント# API・SDK# 生産性向上# 日本語対応

グレップタイル

Greptile

An AI code-review tool where AI agents automatically review GitHub/GitLab pull requests with full-codebase context. It catches multi-file bugs, anti-patterns, and security risks, and can generate tests and hand off fixes to coding agents.

# 自動化・省力化# コード生成# 生産性向上

スティッチ

Stitch

Stitch is an AI UI design and frontend generation tool from Google (beta). From text prompts or images, it generates high-quality UI designs for mobile and web along with the matching frontend code in minutes, and it supports refining designs through conversation as well as exporting to Figma. It is powered by Google's Gemini models under the hood, is free to use, and supports Japanese-language prompts.

# デザイン生成# コード生成

スカイワーク

Skywork

Skywork is an all-in-one AI agent with built-in deep research. From a single instruction, it can generate multiple deliverables—websites, slides, documents, spreadsheets, posters, videos, podcasts, and more. The SkyClaw agent switches among models such as Claude, ChatGPT, and Gemini to research, reason, and edit, and it supports automated execution through scheduled tasks and IM integration. Credits are granted for free every day (800 per the official listing), and beyond that it runs on a credit-based model.

# AIエージェント# 動画生成# プレゼン・スライド生成# 音声生成# テキスト生成# コード生成

レディ

Readdy

Readdy is an AI website builder: describe the site you want and it generates the design and the code together. You can also start from a template, a screenshot, or a reference URL, then edit it in a no-code editor and publish on your own domain. The official site is available in Japanese. The free plan covers 250 credits a month and 2 projects; paid starts at $25/month for Starter ($15/month equivalent on an annual plan). It also includes GEO optimization to help you get cited in AI search, Credit Care that refunds spent credits when a generation misses, form-based lead capture, and an AI receptionist. More than 120,000 people use it worldwide (as of August 2026).

# LLMO・GEO（生成AI検索最適化）# デザイン生成# コード生成# テキスト生成# 業務効率化# 生産性向上# 日本語対応

ベースフォーティーフォー

Base44

A vibe-coding AI app platform that generates full Web apps — database and authentication included — from plain-language instructions. Wix acquired it for around $80M in 2025. The free plan needs no credit card (25 message credits/month, up to 5 apps); paid tiers run $20/$50/$100/$200 a month, 20% less on annual billing. Two-way GitHub sync lets you export the full source code.

# ノーコード自動化# コード生成# AIエージェント# 業務効率化# 日本語対応

プロンプティチュードドットアイオー

Promptitude.io

A prompt management platform to develop, test, and manage prompts across multiple AI providers (OpenAI, Anthropic, Google, Bedrock, etc.) in one place — share with a team and embed into your apps and workflows. Includes no-code Flows, RAG-style document grounding, and API. Free tier available.

# テキスト生成# コード生成# ノーコード自動化

ストリング

String

A platform (by Pipedream; Workday acquisition announced) that builds, runs, and deploys AI agents/automations on the spot from natural-language prompts. It taps Pipedream's 2,700+ integrations like Slack, Gmail, and Google Sheets. Currently a free alpha.

# AIエージェント# ノーコード自動化# コード生成

セイム

Same

An AI development tool that generates a full-stack Next.js + TypeScript web app from a prompt or an existing site's URL. It clones a site's design into code, lets you edit in an in-browser editor/terminal, and publishes via Netlify with GitHub integration. Models: Claude 5 Opus / GPT-5.6. Used by 600,000+ builders.

# コード生成# デザイン生成# AIエージェント# 生産性向上

プロンプトラボ

Prompt Lab

[Appears to be discontinued] A Japan-made platform for designing and sharing prompts for generative AI, provided by Walkers, Inc. Its official domain (prompt-laboratory.com) no longer resolves via DNS and cannot be reached. This page summarizes available alternatives.

# テキスト生成# コード生成# 日本語対応

マジック エルピーオー

MagicLPO

[Availability to be confirmed] MagicLPO, provided by free web Inc. (formerly free web hope), was an AI-powered LPO (landing-page optimization) tool supporting AI improvement proposals, no-code editing, and A/B testing. However, as of August 2026 its official site is unreachable and it is no longer listed among the provider's products (no formal end-of-service notice). Please confirm the latest availability before considering it.

# デザイン生成# コピーライティング# コード生成# 品質向上・クリエイティブ支援# マーケティング# 日本語対応

ゼットエーアイ

Z.ai

The official service for the GLM family of large language models developed by Z.ai (Zhipu AI). In chat (chat.z.ai), GLM-5.3-Flash can write, analyze data and build slides and websites. For developers, Z.ai offers an API (GLM-5.3 costs $1.4 input / $4.4 output per 1M tokens) and the "GLM Coding Plan", a flat-rate plan for using GLM in 20+ tools such as Claude Code and Cline (Lite $18, Pro $80, Max $168 per month). Model weights are published on Hugging Face. Officially supported model languages are English and Chinese, and the interface is in English.

# 生成AI（LLM）# AIチャットボット# コード生成# AIエージェント# API・SDK# テキスト生成

ファウンデン

Founden

An AI app builder from O-mega Enterprise, Inc. that turns a description into a website, a customer app with sign-in and a back office, wired up with payments, email, a database and your own domain, and publishes them. With Autopilot on, the AI keeps shipping improvements, answering email and working on growth after launch. Web version and Mac app (building with Claude Code, Codex or Antigravity). Pro from $29 a month, with an 8-day free trial.

# コード生成# ノーコード自動化# AIエージェント# 自動化・省力化

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