2026年版：会議録音・文字起こしソフト比較
精度・言語サポート・AI品質・料金の4指標で5つの主要ツールを比較しました。
Tools reviewed: OneMeet, Otter.ai, Fireflies.ai, Grain, Fathom
クイック比較
| ツール | 正確性 | 対応言語数 | Japanese | AI Notes | 無料プラン |
|---|---|---|---|---|---|
| OneMeet ⭐ | 98.7% | 40+ | ✓ | ✓ | ✓ |
| Otter.ai | ~95% | 1 | ✗ | ✓ | ✗ |
| Fireflies | ~94% | 60+ | ✗ | ✓ | ✗ |
| Grain | ~93% | ~10 | ✗ | ~ | ~ |
| Fathom | ~95% | ~5 | ✗ | ✓ | ✓ |
詳細レビュー
OneMeet
編集部のおすすめBest overall — especially for international teams
長所
- +98.7% transcription accuracy
- +Native Japanese + 40 other languages
- +Real-time Japanese↔English translation
- +AI notes, action items & decisions
- +RAG-powered AI chat on past meetings
- +Pay-as-you-go pricing — no seat minimums
- +Free tier, no credit card required
- +Zoom + Teams + Google Meet
短所
- −Newer platform than some competitors
向いている用途: International teams, Japan-facing businesses, teams wanting flexible pricing
OneMeetを無料で試すOtter.ai
Good for English-only teams
長所
- +Strong meeting collaboration features
- +Live notes shared during meeting
- +Good English accuracy
短所
- −English-focused only
- −No Japanese or CJK language support
- −Per-seat pricing gets expensive at scale
- −Limited export options
向いている用途: English-speaking teams who want collaborative live notes
Fireflies.ai
Best for CRM-connected sales teams
長所
- +Salesforce, HubSpot, Pipedrive integrations
- +Topic trackers and smart search
- +60+ language support
短所
- −Expensive business tier
- −AI summary quality can be inconsistent
- −No Japanese-specific features
向いている用途: Sales teams using CRM integrations
Grain
Best for video clips and highlights
長所
- +Create shareable video snippets
- +Good for content teams
- +Clean UI
短所
- −Limited language support
- −Not focused on transcription accuracy
- −No Teams bot
向いている用途: Content and marketing teams who clip meeting moments
Fathom
Best free Zoom notetaker
長所
- +Genuinely free tier
- +Simple and easy to use
- +Good English notes quality
短所
- −Zoom-only (no Teams or Google Meet)
- −No multilingual support
- −Limited advanced features
向いている用途: Individuals who only use Zoom
よくある質問
What is the most accurate meeting transcription software?
OneMeet consistently delivers 98.7% word accuracy on clear audio in English and achieves high accuracy in 40+ languages including Japanese.
Which meeting transcription software supports Japanese?
OneMeet is the only major meeting transcription tool with native Japanese support and real-time Japanese↔English translation.
Is there free meeting transcription software?
Yes. OneMeet and Fathom both offer free tiers. OneMeet's free tier includes AI notes and transcription with generous limits — no credit card required.