Gemini Deep Research vs Glean: 2026 comparison
Long-running researcher inside Gemini that plans, browses and writes briefs.
Gemini Deep Research vs Glean — specs
| Spec | Gemini Deep Research | Glean |
|---|---|---|
| Agent Rank | 73 / 100 (A) | 80 / 100 (A) |
| Autonomy | Semi-autonomous | Assistant |
| Pricing | Subscription · from $20 | Subscription · Free tier |
| Open source | No | No |
| Capabilities | Browser, RAG, Memory, Vision | RAG, Memory, Tool use |
| Integrations | 2 apps | 6 apps |
| Verified | Verified | Verified |
| Released | Mar 2025 | Feb 2025 |
Agent Rank breakdown
- Autonomy fit
- 8
- Capabilities
- 8
- Integrations
- 4
- Pricing value
- 8
- Polish & maturity
- 6
- Verifiability
- 10
Auto-computed from autonomy, capabilities, integrations, pricing, maturity and editorial verification. Updated every deploy. How is this computed?
- Autonomy fit
- 7
- Capabilities
- 6
- Integrations
- 10
- Pricing value
- 9
- Polish & maturity
- 6
- Verifiability
- 10
Auto-computed from autonomy, capabilities, integrations, pricing, maturity and editorial verification. Updated every deploy. How is this computed?
Pros & cons
- +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)
- −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
- +Single best enterprise knowledge agent in 2026 — instant grounding in your company data
- +Custom Agents (Glean Agents) let teams build internal workflows without code
- +Strong permission-aware retrieval — agents see only what users are allowed to
- −Enterprise-only — typically $50K+ ACV minimum
- −Initial connector setup takes weeks for full coverage
- −Pricier than ChatGPT Enterprise on a per-seat basis
Pricing
- +Deep Research mode
- +1M-token context
- +Workspace integrations
- +Gemini in Docs, Sheets, Gmail
- +Admin controls
- +Custom data controls
- +Vertex integration
- +Unified search across 100+ apps
- +Work assistant + custom agents
- +SSO + enterprise data isolation
Which one should you pick?
Pick Gemini Deep Research if you want the highest autonomy and the verification loop is in place.
Try Gemini Deep Research →Pick Glean if cost is the main constraint or if your stack spans many tools and integration depth is the constraint.
Try Glean →Affiliate links. We may earn a commission at no extra cost to you.
Frequently asked
Should I pick Gemini Deep Research or Glean in 2026?+
Pick Gemini Deep Research if you want the highest autonomy and the verification loop is in place. Pick Glean if cost is the main constraint or if your stack spans many tools and integration depth is the constraint. Most working teams running both can use Gemini Deep Research for primary work and Glean for the workflows where its specific strengths matter.
What's the price difference between Gemini Deep Research and Glean?+
Gemini Deep Research starts at Subscription · from $20; Glean starts at Subscription · Free tier. Glean 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 Glean?+
Gemini Deep Research is the more autonomous of the two (Semi-autonomous vs Assistant). Higher autonomy ships throughput faster but requires verification loops in place — see our autonomous-vs-copilot framing for when each tier wins.