1つの質問から出典付きレポートを生成するマルチステップリサーチAIエージェント。
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Demo · hover to playGemini Deep Research vs Legorawhich AI research agent should you pick in 2026?
Long-running researcher inside Gemini that plans, browses and writes briefs.
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Gemini Deep Research vs Legora — specs
| Spec | Gemini Deep Research | Legora |
|---|---|---|
| Agent Rank | 75 / 100 (A) | 58 / 100 (B) |
| Autonomy | Semi-autonomous | Semi-autonomous |
| Pricing | Subscription · from $20 | Subscription |
| Open source | No | No |
| Capabilities | Browser, RAG, Memory, Vision | Tool use, Memory, RAG, Multi-agent |
| Integrations | 2 apps | 4 apps |
| Verified | Verified | — |
| Released | Mar 2025 | Aug 2025 |
Categories: Gemini Deep Research → Research · Legora → Research
Agent Rank breakdown
Gemini Deep Research
Agent Rank
75/ 100
- 自律性
- 8
- 機能
- 8
- 連携
- 4
- 料金
- 8
- 完成度
- 7
- 検証性
- 10
自律性、機能、連携、料金、成熟度、編集部の検証を基に自動算出。デプロイごとに更新されます。 どのように算出されているか?
Legora
Agent Rank
58/ 100
- 自律性
- 8
- 機能
- 8
- 連携
- 2
- 料金
- 4
- 完成度
- 7
- 検証性
- 6
自律性、機能、連携、料金、成熟度、編集部の検証を基に自動算出。デプロイごとに更新されます。 どのように算出されているか?
Pros & cons
Gemini Deep Research
メリット
- +Goes the deepest of any research agent — reads 30+ sources per brief
- +Strong on multi-hop reasoning; produces structured, well-cited drafts
- +Native integration with Google Workspace (Drive, Docs)
デメリット
- −Slowest of the three big research agents — typical brief takes 20–40 min
- −Output is verbose; expect to cut 30–40% in editing
- −Less effective on paywalled academic literature than Elicit
Legora
メリット
- +$5.55B valuation Series D Apr 2026 — largest legal-AI Series D in history
- +Multi-agent collaboration (different agents for different transaction types)
- +Strong UK/EU foothold with Magic Circle firm adoption
デメリット
- −Newer than Harvey in US market — fewer NYC AmLaw 100 case studies
- −Enterprise pricing only — no associate-level self-serve
- −Best suited for transactional law (M&A, finance) — less for litigation
Pricing
Gemini Deep Research
おすすめ
Gemini Advanced
$20/月
Individuals
- +Deep Research mode
- +1M-token context
- +Workspace integrations
Business
$30/席/月
Teams on Workspace
- +Gemini in Docs, Sheets, Gmail
- +Admin controls
Enterprise
カスタム
Large orgs
- +Custom data controls
- +Vertex integration
Legora
Standard
カスタム
Boutique firms
- +Contract review agent
- +Due diligence
- +Word + SharePoint
おすすめ
Enterprise
カスタム
Mid + large firms
- +Multi-agent workflows
- +iManage/NetDocs sync
- +Advanced security
Sovereign
カスタム
Magic Circle
- +EU/US/UK data residency
- +BYO LLM option
- +Dedicated tenants
Which one should you pick?
Gemini Deep Research
Pick Gemini Deep Research if cost is the main constraint or if you want a vendor we've verified for accessibility and pricing accuracy.
Try Gemini Deep Research →Affiliate links. We may earn a commission at no extra cost to you.
Frequently asked
Should I pick Gemini Deep Research or Legora in 2026?+
Pick Gemini Deep Research if cost is the main constraint or if you want a vendor we've verified for accessibility and pricing accuracy. Pick Legora if its specific capabilities (Tool use, Memory) match what you need. Most working teams running both can use Gemini Deep Research for primary work and Legora for the workflows where its specific strengths matter.
What's the price difference between Gemini Deep Research and Legora?+
Gemini Deep Research starts at Subscription · from $20; Legora starts at Subscription. Gemini Deep Research is the cheaper entry option. For team deployments the TCO can differ — use the AI Agent Rank TCO calculator for your specific volume.
Which is more autonomous, Gemini Deep Research or Legora?+
Both Gemini Deep Research and Legora are Semi-autonomous agents — neither has a meaningful autonomy advantage over the other. The decision should hinge on capabilities and pricing instead.
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