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AI Services in Search Engine & RAG

AI Services in Search Engine & RAG

AI search engines that leverage semantic understanding and RAG technology for information retrievalFeaturing 21 AI services in total.

パープレキシティ

Perplexity

An AI-powered answer engine that searches the latest information across the web from a single question and answers with sources (citations). Switch among high-performance models like GPT, Claude, and Gemini, and use Deep Research for deeper investigation, the "Comet" AI browser, and agents that autonomously run tasks. Fully supports Japanese.

# 検索・レコメンド# 検索エンジン・RAG# AIエージェント# 要約・翻訳# 生成AI（LLM）# 日本語対応

ディープシーク

DeepSeek

DeepSeek is an open large language model (LLM) family, together with the AI chat and API services built on it, developed by DeepSeek (Hangzhou, China). Since October 17, 2026, the current model is DeepSeek-V4.1-Flash-1017, with weights released under the MIT License. Chat is available on the web and in the app, while the API supports a 1M-token context, image input, Thinking mode, and OpenAI / Anthropic compatibility, with pay-as-you-go rates halved outside peak hours. DeepSeek also offers the larger V4-Pro and the Search / Fetch APIs for web search.

# 検索エンジン・RAG# 生成AI（LLM）

ジェヴ

Jev

Jev is the first System One model from TypeSafe AI, released on 15 September 2026. Unlike an LLM it generates no text: give it a state (text or JSON) and it returns typed values — Choice (classification), Score (rating) and Noul (a 0–1 truth value) — each with probabilities and a calibrated confidence. Because no string comes back, there is nothing to parse and nothing to validate. Vendor-published figures are 70–500 ms end to end and $0.042 per million input tokens, with output tokens free. Questions in one request are evaluated in parallel, so stacking them barely changes latency — which suits support triage, LLM guardrails and RAG re-ranking, where the same judgement repeats at volume. Still in early access behind a waitlist as of October 2026 and also listed on OpenRouter; the docs state that CJK scripts are accepted with lower accuracy than English. On 9 October 2026 Microsoft released Microsoft-Decision-1 with the same price and question types.

# API・SDK# AIエージェント# 検索エンジン・RAG# 自動化・省力化# コスト削減

ジェンビュー

Genview

Genview is a GEO (generative AI search optimization) platform built to help your brand be understood correctly and chosen by generative AI such as ChatGPT and Gemini. Whether your name comes up in answers to questions like "What's a good ~ ?" affects every stage of the buying journey, from awareness and consideration to purchase and word of mouth. Genview makes visible the gap between the ideal brand image you want to convey and what generative AI actually says, working end-to-end from measurement and diagnosis through to improvement proposals across three perspectives: brand perception, mentions and citations for important queries, and your whole website (structured data, llms.txt, and more). It goes beyond mere measurement to present concrete actions for improvement. Genview is operated by FID, Inc. (Shinjuku, Tokyo), which has provided CRM and marketing support for more than 15 years, and was officially released on August 1, 2026, with 30 companies participating as early adopters in its beta.

# LLMO・GEO（生成AI検索最適化）# マーケティング# 検索エンジン・RAG# 生成AI（LLM）# 業務効率化# 生産性向上

ヘルプフィール

Helpfeel

An AI knowledge search system from Helpfeel Inc., built around the patented “intent prediction search” technology. Its defining strength is landing users on the right FAQ article even from vague phrasing, spelling variants, or typos — the company reports a 98% search hit rate. Alongside search-type FAQ, it offers an AI agent that searches across internal PDFs and Word files to answer, an inquiry form that shows answers before submission, and analysis of accumulated inquiry data (VoC) with article improvement proposals, all on one platform. Deployed on 900+ sites as of January 2026, with a reported 70% reduction in inquiries and a 99% retention rate. Pricing is a package of an initial fee plus a monthly fee, quoted individually.

# AIチャットボット# 検索エンジン・RAG# AIエージェント# 業務効率化# コスト削減# 自動化・省力化# 日本語対応

メモリーク

Memoriq

A private, end-to-end-encrypted, open-source 'AI memory' that lets you save and search conversations from ChatGPT, Claude, Gemini, and Grok across one vault. A browser extension captures chats and encrypts them on your device (AES-256) before upload; self-hosting is also possible. Keep your important AI exchanges without leaving them in plaintext on the cloud.

# 検索エンジン・RAG# AIエージェント# 業務効率化# 生産性向上

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）

カサナレ

Kasanare

An enterprise 'work-completion AI platform' that integrates company-specific knowledge understanding (beyond RAG), usage governance, and action control over existing business systems (including legacy) to complete actual work — not just generate answers. With adoption at Mitsubishi UFJ Trust and Banking and others. By Kasanare Inc.

# AIエージェント# AIチャットボット# 検索エンジン・RAG# 業務効率化# 自動化・省力化# 日本語対応

ソブリンガイザー

Sovereign GaiXer

An on-premises generative AI from FIXER Inc. (Minato-ku, Tokyo). Connect the palm-sized unit (based on Lenovo ThinkStation PGX, NVIDIA Blackwell) to your internal LAN and AI processing is completed inside the unit, letting you use generative AI for summarizing documents, drafting materials, reviewing contracts and answering with reference to internal documents (RAG) without sending company data to the internet. Business apps can be added from the GaiXer App Store, and a "redaction app" co-developed with Iga City comes as standard. The price is a one-time purchase of ¥3,806,400 (excl. tax; includes hardware, software license and 3-year warranty), with no extra charges for generations or users. Lease/installments and a 2-week free trial are available.

# 生成AI（LLM）# テキスト生成# 検索エンジン・RAG# 要約・翻訳# 業務効率化# 日本語対応

ペーパーパル

Paperpal

An AI English-editing and academic writing tool for research papers from Cactus Communications, the company behind the English editing service Editage. Trained on professional editors' corrections of academic manuscripts, its AI polishes the grammar and wording of English text into an academic tone, and it brings together plagiarism checks, AI-generated text detection, citation checks, a pre-submission readiness check, literature search across more than 300 million papers with citations (10,000+ citation styles), and translation between 50+ languages including Japanese. It works on the web, as a Microsoft Word add-in, and in Google Docs and Overleaf, with a Japanese interface, payment in Japanese yen and a pay-later option for institutional funds. There is a free plan; Prime costs ¥2,090/month billed annually (¥4,290 month-to-month) and Pro ¥5,060/month billed annually.

# テキスト生成# 要約・翻訳# 品質向上・クリエイティブ支援# 教育# 検索エンジン・RAG# 日本語対応

リードエーアイ

Read AI

An AI meeting assistant from Read AI, Inc. in Seattle. It joins Zoom, Google Meet and Microsoft Teams meetings and produces reports with transcripts, summaries, action items and speaking coaching, and its AI search "Ask Read" answers questions across meetings, email, Slack, Teams and more. It connects to ChatGPT and Claude via an MCP server. Meeting reports support 30+ languages, including Japanese. Pricing: Free (5 meetings/month), Pro $19.75/month, Enterprise $29.75/month (per user; 25% off with annual billing).

# 議事録作成# 音声合成・文字起こし# 要約・翻訳# 検索エンジン・RAG# AIエージェント# 業務効率化# 日本語対応

アリエルエルエムアップマーケット

Alli LLM App Market

An all-in-one generative AI and AI agent platform for enterprises from Allganize Japan Inc. (Shibuya, Tokyo). It bundles more than 100 ready-made business apps and AI agents (meeting minutes, contract review, internal FAQ and more), a proprietary RAG engine that answers from internal documents—including tables and charts—with cited sources, no-code app building, and admin features such as SSO, IP restrictions, guardrails and audit logs. You can choose models such as GPT, Claude and Gemini, and deploy on-premises or in a private cloud. Pricing is a flat fee with unlimited users: the cloud edition starts at a JPY 300,000 setup fee plus JPY 300,000 per month (excluding tax). Customers include NTT DOCOMO, Persol Communication Service and Meiji Seika Pharma.

# 生成AI（LLM）# AIエージェント# 検索エンジン・RAG# AIチャットボット# 業務効率化# 日本語対応

ツヅミツー

tsuzumi 2

A fully domestic Japanese large language model (LLM) built from scratch by NTT, Inc. At 30 billion parameters (30B) it runs inference on a single GPU, so it can be deployed on-premises or in a private cloud without sending confidential data outside. It is strengthened in finance, healthcare and public-sector knowledge and in RAG search, summarization and information extraction from documents, and a May 2026 update added reading of documents with charts and tables. Available since October 20, 2025, and selected for trial use in Japan's Digital Agency "Government AI". It is not a self-serve web service: NTT Group companies provide it individually to businesses and local governments as part of their solutions, and pricing is not published.

# 生成AI（LLM）# テキスト生成# 検索エンジン・RAG# 金融# 医療# 日本語対応

グリーン

Glean

An enterprise Work AI platform from Glean Technologies, Inc. (US). It connects company apps such as Slack, Google Drive, Confluence, SharePoint and Salesforce through 275+ connectors and lets you search across them while enforcing each source app's access permissions (Glean Search). The AI assistant (Glean Assistant) answers, creates content and analyzes data with internal documents as sources, and Glean Agents lets you build AI agents. Japanese is officially supported for search and the UI. Pricing is not published; in Japan it is also provided by NTT DATA and Marubeni IT Solutions.

# 検索エンジン・RAG# 検索・レコメンド# AIエージェント# 生成AI（LLM）# 生産性向上# 日本語対応

チャットセンス

ChatSense

A generative AI service for businesses from Knowledge Sense, Inc. (Minato-ku, Tokyo). It lets you use 10+ models including GPT, Claude and Gemini in an environment where input data is not used to train AI. Beyond chat, it offers an AI that answers from internal documents with citations (RAG), slide generation with PowerPoint export, Deep Research and transcription, plus admin features such as SSO, IP address restrictions, banned words and log monitoring. A free Starter plan (30 uses per month per team) is available; the Business plan starts at ¥980 per user per month with no setup fee and no minimum users or term. Adopted by more than 500 companies, including companies listed on the TSE Prime Market.

# 生成AI（LLM）# ChatGPT連携# 検索エンジン・RAG# AIエージェント# スライド作成# 業務効率化# 日本語対応

サクラノエーアイエンジン

さくらのAI Engine

SAKURA internet's inference API service that runs LLMs and other foundation models in data centers in Japan. Use gpt-oss-120b, Kimi, Qwen and more through OpenAI- and Anthropic-compatible APIs; text generation is free for up to 3,000 requests per month, with pay-as-you-go beyond that. A Private Edition that runs your chosen model on dedicated GPUs for a flat monthly fee (individually quoted) is also available.

# 生成AI（LLM）# API・SDK# 検索エンジン・RAG# 音声認識・音声合成# AIモデル構築・管理# 日本語対応

サイスペース

SciSpace

An AI research assistant for researchers and students from PubGenius Inc. in the US (formerly Typeset). Covering more than 280 million papers across multiple databases, its AI agent handles paper search, literature reviews, data extraction and cited drafts, alongside standalone tools such as Chat with PDF and a citation generator. The interface is in English. Basic is free; Premium is $20/month ($12/month billed annually).

# 検索エンジン・RAG# AIエージェント# 要約・翻訳# テキスト生成# 教育

コンセンサス

Consensus

An AI academic search engine from Consensus NLP (US). It finds relevant studies across more than 220 million peer-reviewed papers and summarizes them with citations, shows how much research agrees on a yes/no question with the "Consensus Meter", and runs literature reviews of up to 50 papers with Deep. Answers can be received in Japanese. Free plan available; Pro is $12/month billed annually.

# 検索エンジン・RAG# AIエージェント# 要約・翻訳# 教育# 日本語対応

エリシット

Elicit

An AI research assistant for researchers from Elicit Research PBC (USA). It semantically searches more than 138 million academic papers and 545,000 clinical trials, and produces reports, data-extraction tables and systematic reviews (screening and extraction) with sentence-level citations. Designed for use in English. Basic is free; Pro is $49/month billed annually (academic plans available).

# 検索エンジン・RAG# AIエージェント# 要約・翻訳# 教育

マイクロソフト・ディシジョン・ワン

Microsoft-Decision-1

Microsoft-Decision-1 is a decision-specialized model that Microsoft released on October 9, 2026. Instead of generating text, it returns a probability for each fixed answer option for the text or JSON you pass in. It supports three question types — noul (probability that something is true), choice (one option from a set), and score (a value on an ordered scale) — and costs $0.042 per million input tokens with free output, the same as TypeSafe AI's Jev. Built by post-training Qwen3.5-9B, it is available on Microsoft Foundry (preview) and OpenRouter with a 32,768-token context. It suits high-volume repeated judgments such as ticket routing, prioritization, grading AI responses, and safety checks. Accuracy in Japanese has not been published.

# API・SDK# 検索エンジン・RAG# 自動化・省力化# コスト削減

ローグ

LAWGUE

A cloud service from FRAIM Inc. (Shibuya-ku, Tokyo) for drafting, reviewing, and managing contracts and internal regulations. "LAWGUE" for contracts offers case management, AI-assisted review, similar contract search, and diff comparison, while "LAWGUE規程管理" automatically builds the cross-references between imported regulations and shows the impact of revisions. By registering its MCP server, you can search and review your own contracts and regulations from Copilot, Claude, ChatGPT, and Gemini. Used by TS TECH, Toyota Finance, Kajima, and others. Pricing by custom quote (short-term trial available).

# PDF・文書生成# 検索エンジン・RAG# データ連携（API連携）# 業務効率化# 日本語対応