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AI Services in Speech Synthesis & Transcription

AI Services in Speech Synthesis & Transcription

Tools that convert speech to text or generate spoken audio from textFeaturing 20 AI services in total.

サマリー

Sumarii

An AI transcription and meeting-minutes service designed for spoken Japanese. It handles microphone recording, audio and video files, media URLs, and meeting-bot invites to Zoom, Google Meet, and Microsoft Teams, taking you from a transcript with speaker labels and timestamps all the way to a templated AI summary on a single screen. Its distinguishing feature is that you can fix broken proper nouns on the spot — via a "words that need checking" list of low-confidence terms and natural-language edits through AI chat. Audio, transcripts, and minutes are stored in Japan and are never used to train AI (zero retention). Up to 3 hours a month is free with no credit card required, with every feature available.

# 議事録作成# 音声合成・文字起こし# 音声認識・音声合成# 要約・翻訳# 業務効率化# 生産性向上# 日本語対応

リリスエーアイ

LilysAI

A knowledge-management assistant (by Korea's LilysAI) that summarizes diverse sources — YouTube, PDFs, audio, web pages, recordings — with AI and organizes them into cited notes. Also does mind maps/quizzes and an AI chat 'Lily'. Free tier / paid from ¥900/mo, 20% off annual.

# 音声合成・文字起こし

ジャムロール

JamRoll

JamRoll is now offered as "Knowledge Work AI Sales Records." An AI meeting-record tool that records in-person, online, and phone sales conversations and automates transcription, summarisation, and CRM/SFA data entry. Poetics, the developer, transferred all its shares to Knowledge Work in May 2025, and the technology now lives on in this successor product. List price is 5,000 yen per user per month. Adopted at scale by large enterprises such as NEC and Ricoh Japan.

# 議事録作成# 音声合成・文字起こし# 感情解析・表情分析# 自動化・省力化# セールス# 日本語対応

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

ノッタ

Notta

Notta is an AI transcription and meeting-notes service that is strong in Japanese. It transcribes meetings and interviews in real time and automates speaker identification and AI summarization. It supports integration with Zoom/Teams/Google Meet/Webex and file imports, and is said to achieve a recognition rate of 98.86% or higher in formal meetings. Data is stored domestically with SOC 2 and ISO 27001 certifications, and Notta Brain can generate materials using AI credits. Pricing is Free ¥0 / Premium ¥1,185 / Business ¥2,508 (annual, tax-included monthly) / Enterprise by consultation.

# 議事録作成# 音声合成・文字起こし# 自動化・省力化# セールス# 日本語対応

ライトスクライブ

LiteScribe

LiteScribe is an AI transcription and meeting-notes service that turns meetings, interviews, and video audio into text and automatically generates AI summaries, topic tags, and action items. No recording bot joins the call: the app captures your computer's system audio directly on your own machine, so nothing shows up in the participant list and — since no meeting URL is needed — in-person conversations are recorded exactly the same way. The desktop builds (Windows, macOS, Linux) add an offline mode (Pro and Business plans) that runs both transcription and AI summarisation on your own computer. Transcription covers 100+ languages and the interface is available in 15 languages including Japanese, with speaker diarization, PDF/DOCX/SRT export, and an AI chat that answers with citations and timestamps. Pricing starts with a permanent free tier of 120 minutes a month with no credit card, and paid plans from US$7.95 per month billed annually. When offline mode is not used, cloud transcription is performed by AssemblyAI in the United States.

# 議事録作成# 音声合成・文字起こし# 音声認識・音声合成# 要約・翻訳# 字幕生成# 業務効率化# 生産性向上# 日本語対応

オトリオ

Otolio

An AI agent that proactively automates all meeting-related work — before, during, and after meetings. Rebranded from the AI minutes service "Smart Shoki," it goes beyond recording, transcription, and minutes to take over pre-meeting company research and post-meeting CRM updates and follow-up emails. Offered by Epicbase, with a "minutes agent" and a "sales agent." ISO/IEC 27001 certified; data is stored domestically and not used for machine learning without permission.

# 議事録作成# AIエージェント# 音声認識・音声合成# 音声合成・文字起こし# セールス# 業務効率化# 日本語対応

セールスケン

Salesken

A conversation- and revenue-intelligence AI platform for sales teams that analyzes sales calls in real time — offering real-time coaching with the best talking points, AI quality evaluation of all calls, automatic transcription/summarization, and revenue intelligence that predicts deal outcomes — to help reps, managers, and RevOps close more.

# セールス# 音声合成・文字起こし# AIエージェント

トーカトゥー

Talkatoo

An AI scribe and dictation service for veterinarians and animal hospitals that turns exam conversations into complete SOAP-format medical records before the appointment ends. It also offers veterinary-vocabulary dictation (Desktop Dictation), call summaries, and follow-up automation, greatly cutting record-keeping time.

# 医療# 音声合成・文字起こし# 議事録作成

コベット

CoVet

An AI medical-record (SOAP) tool for veterinarians (an ambient AI scribe): record the exam conversation, and it auto-generates structured SOAP charts, client visit summaries, and referral letters. It takes over documentation so vets can focus on patient care.

# 議事録作成# 音声合成・文字起こし# 医療# 業務効率化

エーアイショーツ

AI Shorts

A Japanese video-generation service that turns documents (PDF, PowerPoint, images) into narrated videos — just upload, and AI auto-generates the script and adds narration. It supports AI voices in 15+ languages, making training, manuals, and product explanations into multilingual video quickly. By AGENTEC Co., Ltd.

# 動画生成# 音声合成・文字起こし# 字幕生成# 要約・翻訳# 業務効率化# 日本語対応

ファゾム

Fathom

Fathom is an AI notetaker that automatically records, transcribes, and summarizes your meetings. It works with Zoom, Google Meet, and Teams, generating summaries and action items right after a call ends. Its biggest draw is that even the free plan offers unlimited recording, transcription, and AI summaries. It also includes Ask Fathom (AI chat across your calls) and integrations with CRM, Claude, and ChatGPT. Pricing is Free $0 / Premium $16 / Team $15 / Business $25 / Enterprise $35 (per user, per month).

# 議事録作成# 音声合成・文字起こし# 要約・翻訳# セールス

グラノーラ

Granola

Granola is an AI notetaker that turns the notes you take yourself into polished minutes without sending a bot into your meeting. It picks up your computer's audio directly to transcribe it, then combines that with your notes to organize the key points in seconds. Because no recording bot joins the call, it's easy to use even in one-on-ones and sensitive deals, and it also supports AI chat across meetings, thinking models, and Notion/Slack/HubSpot integrations plus MCP/API. Pricing is Basic $0 / Business $14 / Enterprise $35 (per user, per month).

# 議事録作成# 音声合成・文字起こし# 要約・翻訳# AIエージェント

ランウェイエムエル

Runway ML

Runway is a creative platform for generating images, video, and audio with AI. You can work across its own Gen-4.5 model, video models such as Aleph, Seedance, Kling, and Veo, images from the likes of Nano Banana Pro, and audio from the likes of Lyria. It's used by more than 60M+ creators and companies worldwide. It's credit-based, with pricing that includes a free tier (125 credits) plus Standard $15/Pro $35/Max $95 (monthly billing; annual billing is $12/$28/$76) and Enterprise.

# 動画生成# 画像生成# 音声合成・文字起こし# 要約・翻訳# AIエージェント

ファイヤーフライズ

Fireflies.ai

Fireflies.ai is an AI meeting assistant that automatically transcribes, summarizes, searches, and analyzes your meetings. Its AI notetaker "Fred" automatically joins Zoom, Google Meet, and Microsoft Teams calls and records conversations in 100+ languages. Moments after a meeting ends you get a summary with key points and action items, and it also supports questions to AskFred, search across all your meetings, conversation intelligence (sentiment, talk time, topics), and CRM integration (Fireflies for Sales). Used by more than 1 million companies worldwide and rated 4.8 on G2, its pricing is Free $0 / Pro $10 / Business $19 / Enterprise $39 (per seat, monthly, billed annually).

# 議事録作成# 音声合成・文字起こし# 業務効率化

ピーディーエフ・トゥー・ブレインロット

PDF to Brainrot

An AI tool that converts PDFs and text into TikTok/YouTube Shorts-style vertical short videos. It plays gameplay footage (Minecraft, Subway Surfers, etc.) in the background while an AI narration reads the content, auto-generating a "brainrot"-style video. Free tier available, credit-based. Narration is mainly in English.

# 動画生成# 要約・翻訳# 音声合成・文字起こし# 教育# 業務効率化

プラウド

Plaud

Plaud pairs AI voice recorders — the card-type Plaud Note and wearable Plaud NotePin — with a companion app to record meetings, sales calls, and phone conversations and turn them into transcripts in 112 languages, AI summaries, and mind maps. Devices start at JPY 27,500 (tax incl.) with 300 free transcription minutes per month, and PLAUD K.K., the Japanese subsidiary, provides support in Japanese.

# 議事録作成# 音声合成・文字起こし# 要約・翻訳# 業務効率化# 日本語対応

リモボイス

Rimo Voice

Rimo Voice is a Japanese-focused AI meeting minutes and transcription service from Rimo LLC (Ebisu, Tokyo). A recording bot automatically joins Zoom, Teams, Google Meet, and Webex meetings, then handles transcription with speaker separation and AI summaries in 60+ languages. ISO27001/27017 certified, data stored in Japan and never used for AI training. Pricing (tax incl.): Transcription ¥1,650/mo, Pro ¥4,950/mo, Team ¥6,600/mo per account; Enterprise plan by quote. Used by 250,000+ accounts in Japan.

# 議事録作成# 音声合成・文字起こし# 要約・翻訳# 業務効率化# 生産性向上# 日本語対応

ティーエルディーブイ

tl;dv

tl;dv is a Germany-born AI meeting recording and note-taking tool. It automatically records and transcribes Zoom, Google Meet, and Microsoft Teams meetings, then automates everything from AI meeting notes to CRM updates and follow-up email drafts. It offers a Japanese-optimized transcription model with a Japanese UI and support, and even the free plan includes unlimited recording and transcription in 30+ languages. Paid plans start with Pro at JPY 36,960 per seat/year (billed annually).

# 議事録作成# 音声合成・文字起こし# 要約・翻訳# セールス# 日本語対応

ウィスパーフロー

Wispr Flow

Wispr Flow is an AI dictation app that turns what you say into writing you can actually send. It types wherever your cursor is, so it works in Gmail, Slack, Notion, your terminal, ChatGPT — anywhere you can type. It strips out filler words and false starts, adds punctuation and line breaks, and can hold a different tone for each app. It handles 100+ languages including Japanese, and you can teach it proper nouns and jargon through its dictionary. Available on Mac, Windows, iPhone, and Android. There is a free plan, and Pro is ¥960 per user per month as listed for Japan (pricing is shown in local currency). Built by Wispr in San Francisco, which has raised $56M to date.

# 音声認識・音声合成# 音声合成・文字起こし# 議事録作成# 生産性向上# 日本語対応