AI Services in Idea Support / Creative Tools

Tools that help expand thinking and spark new ideasFeaturing 11 AI services in total.

ユーディオ

Udio

An AI music generator (by Uncharted Labs) that creates full songs with vocals from a text prompt. It supports lyrics/style control, extend, inpainting, and audio upload — but since its 2025 Universal Music Group partnership it has become a closed platform, and downloading your generated songs is currently disabled (use stays on-platform). Free plan available, credit-based.

# 音楽生成# アイデア支援／創造ツール# エンタメ／ゲーム・遊び

スードウライト

Sudowrite

An AI writing tool built specifically for fiction and creative storytelling. Features include Story Bible for developing ideas into chapter outlines, Write for suggesting continuations, Describe for vivid scene-setting, Brainstorm for idea expansion, and Expand for fleshing out prose. Designed as a creative co-author for writers. Interface and optimization are primarily English-focused; Japanese creative writing is not practically supported.

# テキスト生成# コピーライティング# アイデア支援／創造ツール# 品質向上・クリエイティブ支援

ビジュアルエレクトリック

Visual Electric

Visual Electric was a tool that let designers generate and edit AI images on an infinite canvas, but in October 2025 Perplexity acquired its team and the service was wound down over roughly 90 days (ending in early 2026). Users were offered data export and prorated refunds on their subscriptions, and the development team joined Perplexity. This page summarizes how the shutdown came about, the handling of data, and routes to alternative services (Leonardo.Ai, Krea, Recraft, Perplexity, and others).

# 画像生成# アイデア支援／創造ツール

プレイグラウンドエーアイ

Playground AI

An AI design studio for creating logos, T-shirts, stickers, posters, social images and more from text (pivoted from a former general image-generation AI). Founded by Suhail Doshi (co-founder of Mixpanel). Alongside its own PGv3 model you can choose Nano Banana or GPT Image 2, with templates and non-destructive editing. Pricing is credit-based from Free to Pro Plus $45. The old playground.com domain is consolidated into playgroundai.com.

# 画像生成# アイデア支援／創造ツール

ステーブルディフュージョン

Stable Diffusion

A family of open-weight image-generation AI models developed by Stability AI. The current flagship is Stable Diffusion 3.5 (Large / Large Turbo / Medium). You can download the weights for free and run them locally (GPU required), and it is also usable via the official API, DreamStudio, ComfyUI, and more. Under the Community License, commercial use is free for under $1M in annual revenue (prompts are mainly in English).

# 画像生成# 生成AI（LLM）# アイデア支援／創造ツール# 日本語対応

ナイトカフェ

NightCafe

An AI art platform that brings the latest image and video generation models—Flux, DALL-E 3, Nano Banana, Veo—together in one place, with a community and daily challenges for sharing work. Commercial use is allowed even on the free plan.

# 画像生成# アイデア支援／創造ツール

ロバート

Lovart

Lovart is "the world's first AI design agent," generating everything from logos, posters, and packaging to ads and video from a single sentence. On an infinite canvas it chains multiple cutting-edge image/video models (Nano Banana, GPT Image, Flux, Veo, Sora, etc.) to carry work from planning to a full set of designs. It has a Brand Kit and PSD export, and a Japanese UI. Credit-based pricing: Starter from ¥2,945/mo / Basic / Pro / Ultimate (free trial available).

# デザイン生成# 画像生成# 動画生成# 音声生成# 音楽生成# アイデア支援／創造ツール# 品質向上・クリエイティブ支援# AIエージェント

チャチャ

Chacha

An AI creation community (formerly Anirole; now chacha-ai.io) where you build your own AI characters and enjoy chat/roleplay plus anime-style illustration generation. Adult-leaning, centered on romance and character conversation, with posting/browsing. USD-denominated diamond credits.

# AIチャットボット# ボイスボット# 品質向上・クリエイティブ支援# アイデア支援／創造ツール# エンタメ／ゲーム・遊び# 日本語対応

ノベルシャフト

NovelShaft

NovelShaft is an AI-assisted novel-writing environment that keeps the manuscript, the manuscript outline, reference material such as characters and world-building, and conversations with AI together in one work. From shaping a fragment into an idea, through drafting and long-form revision, to export as Text, Markdown, DOCX, PDF, or EPUB 3 and publishing, everything happens on one screen, and the design puts the author in charge of what stays in the work: AI changes can be skipped before they are applied. It supports vertical writing, ruby, and read-aloud, handles Japanese and English works, and runs on the Web and iOS (iPhone and iPad). Pricing is a free Free plan (200 AI credits every 30 days) plus monthly Light $15, Standard $30, and Pro $90 plans.

# テキスト生成# アイデア支援／創造ツール# 品質向上・クリエイティブ支援# 日本語対応

シーダンス

Seedance

Seedance is an AI video generation model developed by ByteDance (China). The latest Seedance 2.5 supports up to 30 seconds of continuous generation and up to 50 reference assets (images, video, audio). General users access it via Dreamina international or CapCut; developers use the BytePlus API. Free daily credits are available, with USD-based credit plans and pay-as-you-go API pricing.

# 動画生成# 品質向上・クリエイティブ支援# API・SDK# アイデア支援／創造ツール# マーケティング

ワン

Wan

Wan (Tongyi Wanxiang) is Alibaba's family of AI video and image generation models with an official online service. Wan2.1/2.2 are open models under Apache 2.0, and the latest Wan 3.0 (beta) supports native 30-second generation. Free daily credits on wan.video, with paid plans from $5/month (billed yearly); billing is in US dollars.

# 動画生成# 画像生成# 品質向上・クリエイティブ支援# API・SDK# アイデア支援／創造ツール

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