AI Services in Quality Improvement & Creative Support

Using AI to enhance creativity and the quality of deliverablesFeaturing 35 AI services in total.

キャップカット

CapCut

CapCut is a video editing app from Bytedance Pte. Ltd. (Singapore), part of the ByteDance group behind TikTok. It runs on mobile, desktop, and browser, offering auto captions, background removal, and AI image/video generation for free to start. CapCut Pro costs JPY 1,080+/month or JPY 9,900/year via the Japan App Store (as of August 2026), with a fully Japanese UI.

# 動画生成# 字幕生成# 品質向上・クリエイティブ支援# 業務効率化# マーケティング# 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

グラマリー

Grammarly

An AI writing assistant that detects and fixes grammar, spelling, and punctuation errors in English in real time. It also handles tone adjustment, rewriting, generative AI writing, and plagiarism/AI-text detection, usable broadly via browser extensions, desktop/mobile apps, and Microsoft Office and Google Docs. It is English-centric and effectively does not support Japanese proofreading.

# コピーライティング# テキスト生成# 業務効率化# 品質向上・クリエイティブ支援

ハイルオエーアイ

Hailuo AI

MiniMax's AI video generator (Hailuo AI) that creates cinematic short videos from text or images, now led by MiniMax's own flagship MiniMax H3 (up to 2K). It offers Omni Reference for consistency and acts as a multi-model hub (Veo/Sora/Nano Banana, etc.). Supports text-to-video and image-to-video.

# 動画生成# 画像生成# 品質向上・クリエイティブ支援

ピカ

Pika

An AI video-generation app that creates short videos from text or images, known for its playful 'Pikaffects' special effects. Its 2026 flagship model is Pika 2.5, and it also offers Pikadditions, Pikaswaps, Pikaframes, and Pikascenes. Great for quickly making social/effect videos.

# 動画生成# エンタメ／ゲーム・遊び# 品質向上・クリエイティブ支援

マグニフィック

Magnific

An AI creative platform covering image, video, audio, and 3D — generation through editing and publishing. Renamed from Freepik in April 2026. Use leading external models (GPT, Nano Banana, Veo, Kling, Flux) side by side, with 250M+ stock assets and Magnific/Topaz upscalers under one subscription. From ¥1,950/month.

# 画像生成# デザイン生成# 品質向上・クリエイティブ支援

クリング

Kling

A video-generation AI from China's Kuaishou. Turns text or images into high-quality video; the current Kling 3.0 / 3.0 Omni adds native audio and native 4K output. The console is fully localized but billing is USD-only — US$8.8/month on monthly billing, $79.2/year on annual. Free-plan output is watermarked and not for commercial use.

# 動画生成# 画像生成# 品質向上・クリエイティブ支援

スーノ

Suno

Suno turns a text prompt into a complete song — vocals, lyrics, and backing included (current model v5.5). It handles Japanese vocals, including J-pop and anime-style singing, and finishes a track in about a minute, with stem separation and the DAW-style Suno Studio on top. Pricing is in US dollars, not local currency: the free plan allows 10 songs a day, Pro is $10/month ($8 on annual billing), and Premier is $30/month ($24 annual). Commercial use requires a paid plan. Note that from September 3, 2026, monthly download caps apply — none on Free, 20 songs on Pro, and 60 on Premier.

# 音楽生成# 音声生成# 品質向上・クリエイティブ支援# エンタメ／ゲーム・遊び# 日本語対応

ナノバナナ

Nano Banana

The nickname for Google (DeepMind)'s Gemini image generation & editing model. Nano Banana = Gemini 2.5 Flash Image; Nano Banana Pro = Gemini 3 Pro Image, strong at character-consistent conversational editing, multi-image fusion, and in-image text. Available via the Gemini app, AI Studio, and the Gemini API, with a SynthID watermark on generated images.

# 画像生成# 自動化・省力化# 品質向上・クリエイティブ支援# 日本語対応

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

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

シードリーム

Seedream

Seedream is an image generation and editing AI model family developed by ByteDance's Seed research team. The latest Seedream 5.0 excels at precise editing including layer separation and multilingual text rendering. Individuals can use it via Dreamina (free daily credits, Japanese UI); developers via the BytePlus API from $0.035 per output image (USD billing).

# 画像生成# デザイン生成# API・SDK# 品質向上・クリエイティブ支援# 日本語対応

サウンドバース

Soundverse AI

An AI creative studio that generates songs, music videos, and vocals/voices from a prompt. Directed by a reasoning AI producer 'Agent One' and assistant 'Saar,' it also does stem separation, extension, remixing, and lyrics. You can compose scored with real artists' 'Artist DNA,' and it supports royalty-free/commercial use (by plan).

# 音楽生成# 音声生成# 品質向上・クリエイティブ支援

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

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

ワードチューン

Wordtune

An AI writing assistant strong at rephrasing (paraphrasing) English text. It offers tone-adjusted rewrites, summarization, AI text generation, grammar checking, and 'Humanize' to make AI text sound natural, usable via a browser extension or editor. By AI21 Labs. It is English-centric and effectively does not support Japanese proofreading/rewriting.

# コピーライティング# テキスト生成# 要約・翻訳# 品質向上・クリエイティブ支援

バエヘンサチ

映え偏差値

A free service that scores photos, illustrations, and AI-generated images with AI. No login required. It analyzes three dimensions—beauty, quality, and social media appeal—and returns a deviation score, percentile, and ranking, compared separately by image type (Photo / AI Photo / Illustration / AI Illustration / 3DCG).

# 品質向上・クリエイティブ支援# マーケティング# エンタメ／ゲーム・遊び# 日本語対応

フレームパック

FramePack

A next-frame-prediction video-generation AI (open source, Apache-2.0) from lllyasviel (Lvmin Zhang), the author of ControlNet. Because it compresses input frames to a constant length, compute stays the same regardless of video length, and even 6GB of VRAM can generate minute-class long videos locally. Based on HunyuanVideo (13B), it supports the RTX 30/40/50 series and frame-by-frame sequential preview.

# 動画生成# 生成AI（LLM）# 品質向上・クリエイティブ支援

スカイリールズ

SkyReels

Skywork AI (Kunlun Tech)'s AI video generation platform. From text, images or reference media it creates cinematic short clips with visuals and audio generated together (the current commercial model SkyReels V4 makes ~5-15s, 720p-1080p). Born from short-drama production, it supports Omni Reference, Talking Avatar and an API. Note: "infinite length / Diffusion Forcing" refers to the open-source research model SkyReels-V2, not the commercial web version.

# 動画生成# 音声生成# バーチャルヒューマン# デザイン生成# 品質向上・クリエイティブ支援

ファッション

FASHN

A fashion-focused visual AI platform that turns a garment's product image into a photo of an AI model wearing it. It supports virtual try-on (Product to Model), model swap, pose/background changes, and video, and quickly produces lookbook, ad, and product-page imagery. API integration lets you embed try-on into apps and e-commerce. Free 10 credits, Basic from $19/mo.

# 画像生成# バーチャルヒューマン# 小売・EC# 品質向上・クリエイティブ支援

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

ラスク エーアイ

Rask AI

An AI localization platform that automatically translates and dubs videos and audio into 130+ languages. With natural AI voices, voice cloning (32 languages), multi-speaker detection, lip-sync, and subtitle editing, it takes existing videos global as-is.

# 要約・翻訳# 動画生成# 音声生成# 音声合成・文字起こし# 品質向上・クリエイティブ支援# 日本語対応

ミュレカ

Mureka

Mureka is an AI music generator from Kunlun Tech (China; listed on the Shenzhen ChiNext board). Give it lyrics, a style prompt, or a reference track and the latest V9.5 model produces a full song. It does not stop at generation: timeline editing, up to 12-stem separation, remixing, and music videos built from your track, plus Mureka Co for driving a DAW in plain language. The UI is available in Japanese and other languages. The free plan covers 4 songs a day (no downloads, no commercial use); paid starts at $8/month for Pro on annual billing, priced in USD only. While your subscription is active, commercial rights extend even to tracks made before subscribing, and you can cancel at any time. Over 200,000 people worldwide pay for it (as of August 2026).

# 音楽生成# 音声生成# エンタメ／ゲーム・遊び# 品質向上・クリエイティブ支援

フォトグラファー エーアイ

Fotographer.ai

Fotographer.ai is a generative-AI / API service specialized in "AI product photography" for e-commerce and marketing. Using its proprietary ZenInpaint technology, it automates compositing into new scenes, background swaps, and multi-product layout composition while faithfully preserving the pixels, shape, and brand of the actual product image. It offers three modes — scene generation, inpainting, and background composition — along with a developer API and SDK, delivering large-scale product-visual production that replaces 3D rendering and physical photo shoots. Fotographer.ai partners with Cylindo, part of the Chaos group behind V-Ray. Pricing includes Starter ¥2,000, Creator ¥4,980, and Premium ¥9,980 (monthly) among others, and the service originates in Japan.

# 画像生成# デザイン生成# 品質向上・クリエイティブ支援# マーケティング# 小売・EC

ピック コパイロット

Pic Copilot

An AI content-creation tool for e-commerce sellers to make product images, videos and ad creatives. Operated by Neuralnetics, a Singapore company in the Alibaba International (AIDC) group. Beyond background removal, AI backgrounds, virtual try-on and image translation, it now generates product videos and product pages for Amazon/Shopify, plus a natural-language PicCopilot Agent. Japanese UI, free plan (Pcoins credits). Used by 1.5M+ sellers.

# 画像生成# デザイン生成# 品質向上・クリエイティブ支援# マーケティング# 小売・EC

ヒッグスフィールド

Higgsfield

A cinematic AI video and image generation platform giving cross-access to more than 15 video generation models — including Sora 2, Veo 3.1, and Kling 3.0 — plus the latest image generation models, all under a single subscription. Its strength lies in film-like camera work, and it has grown to more than 25 million users. Having reached a $1.3 billion valuation, it is one of the most fast-moving AI video startups right now.

# 動画生成# 画像生成# 音声生成# 品質向上・クリエイティブ支援

シャールック

SHERLOOK

SHERLOOK is a "proofreading tool for video" from HARAKAMI Inc. that supports the final check of finished videos. Upload a video and its AI checks on-screen caption typos, differences from the script, visual glitches such as black frames and gaps, audio levels, social media safe zones, and each client's banned and required wording, then organizes the results into a list with timecodes, the relevant frames and suggested corrections. Results can be shared via a link that needs no login, or as PDF/CSV. An MVP version for businesses is available from ¥30,000 per month (excl. tax, per account).

# AI-OCR（文字認識）# 字幕生成# 音声認識・音声合成# 品質向上・クリエイティブ支援# 業務効率化# 日本語対応

イメージトゥプロンプト

Image to Prompt

Image to Prompt is a web tool that turns a reference image into prompts for AI image generators. Upload an image and it analyzes nine aspects—subject, composition, lighting, color, style and more—then writes six prompts at once: general-purpose plus versions for Midjourney, FLUX, Stable Diffusion, ChatGPT Image and Nano Banana. You can edit and copy the results on the spot and save them to History when signed in. Try three images free without signing up; paid options are a one-time $4.99 pack (300 credits) and Pro at $9.90/month (English only).

# 画像生成# 顔認証・画像解析# アイデア支援／創造ツール# 品質向上・クリエイティブ支援

クイックデザイン

QuickDesign

QuickDesign is an AI ad studio (built by an independent team in Istanbul) for creating high-performing ad creative end to end. It handles competitor-ad research, brand extraction, mass-producing static ads from 10,000+ templates, generating UGC avatar videos, and publishing to and analyzing on Meta all in one platform, designed for performance marketers and DTC operators. Sign-up starts from Start for $1.

# 画像生成# デザイン生成# 品質向上・クリエイティブ支援# マーケティング# 小売・EC

オムニパート

Omnipart

OmniPart is an AI that generates an "editable 3D model split into individual parts" from a single image (part-aware 3D generation). A SIGGRAPH Asia 2025 project by researchers at the University of Hong Kong, VAST, and others, it outputs 3D separated into parts rather than a single mesh, making it easy to change materials or swap parts after generation. The code and an online demo are open source (MIT License).

# 教育# 品質向上・クリエイティブ支援# エンタメ／ゲーム・遊び

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

リリックス・トゥー・ソング・エーアイ

Lyrics To Song AI

An online AI music generator (formerly MeloCool Music) that turns your own lyrics or a text prompt into a full song with vocals, instruments, and structure. Choose genre/mood/tempo and export to MP3/WAV/MIDI or separated stems. Free plan available.

# 音楽生成# 音声生成# エンタメ／ゲーム・遊び# 品質向上・クリエイティブ支援

ソラ

Sora

[Discontinued] OpenAI's video-generation AI that created videos with audio from text or images. OpenAI announced its discontinuation in March 2026; the app/web shut down on April 26, 2026 (the API is set to end September 24, 2026). Export data per the official guidance. Alternatives for video generation include Kling, Hailuo, Veo, and Pika.

# 動画生成# 音声生成# 品質向上・クリエイティブ支援

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

Recommended Articles on Quality Improvement & Creative Support

[2026 Edition] Must-Know AI Tools for E-Commerce Managers: 7 Tools for Automating Product Image Editing and Virtual Model Try-Ons

Streamline photography, editing, and model sourcing with AI to boost both CTR and CVR simultaneously. A clear breakdown of 7 cutting-edge AI tools for product image processing and virtual try-on generation, along with the benefits of adopting them.

[2026 Edition] Must-Have AI Tools for Web Designers: 12 Picks | From No-Code Site Building and Asset Creation to Banner Generation and Copywriting

A curated guide to AI tools that boost web designer productivity. Covers no-code site building, icon and asset creation, automated banner generation, A/B test copy creation, and more — all directly applicable to real-world work.

[2026 Edition] 11 Essential AI Tools for Illustrators | Full Coverage from Auto-Generation and Coloring to Style Transfer and BGM Creation

A curated selection of AI tools that support illustration work — rough sketching, coloring, style transfer, and BGM creation. The 2026 edition thoroughly covers the latest tools for prompt-based generation and art style conversion that help creators unlock their creativity.

How to Edit NotebookLM Slides [September 2026]: Why You Can't Fix the Text Even in PPTX, and Five Methods by What You Need to Change

NotebookLM (renamed Gemini Notebook in July 2026) produces slide decks that are "a single picture with text in it", drawn by the image generation model Nano Banana Pro. Whether you export to PDF or PowerPoint (PPTX), each slide goes in as an image, and export to Google Slides is still not available as of September. This article confirms from Google's official help that the official Revise feature rebuilds the entire slide deck every time and does not consult your sources during revisions, then sets out five methods you can choose by what you want to fix: giving instructions with Revise; laying corrections over the top in PowerPoint; conversion tools that use OCR to turn slides back into a PPTX with editable text (comparing pricing and data handling for NoteSlide, Kirigami, DeckEdit, CopySlides and Swift-Slide); redrawing the slide as an image with Nano Banana; and rebuilding it as an editable deck with tools such as GAMMA or Irusiru. It also covers caveats such as Canva's Grab Text not working on Japanese slides, the compute-based limits in place since 2 September, and how watermarks are handled.

Claude Fable 5 vs. GPT-5.5 vs. Gemini 3.1 Pro: Which Should You Choose? A Deep Dive into Performance, Pricing, and Use Cases [July 2026]

A thorough comparison of the latest flagship models from the industry's three leading AI labs, all released in the first half of 2026: Claude Fable 5, GPT-5.5, and Gemini 3.1 Pro. Covers benchmark performance, API pricing, context windows, multimodal support, and how to use them on consumer plans like ChatGPT Plus, Claude Pro, and Google AI Pro — with recommendations by use case, based primarily on official data.

Top 4 AI Coding Tools Compared | Choosing Between Claude Code, Cursor, Codex, and Antigravity

A side-by-side comparison of the leading AI coding tools — Claude Code, Cursor, Codex, and Antigravity. Guides you to the right choice based on features, strengths, and ideal use cases.