Microsoft Edge Copilot Mode + Journeys (now Copilot in Edge) vs Perplexity Comet
Microsoft Edge Copilot Mode + Journeys (now Copilot in Edge) vs Perplexity Comet: side-by-side comparison of two browser-agent memory systems — architecture, taxonomy, license, pricing, MCP/A2A support, and direct edges.
Microsoft Edge Copilot Mode + Journeys (now Copilot in Edge) · Perplexity Comet
Cost & capability
| Microsoft Edge Copilot Mode + Journeys (now Copilot in Edge) | Perplexity Comet | |
|---|---|---|
| Capability band | competent | competent |
| Capability composite | 60 | 68 |
| Cost tier | — | free |
| $/Mtok input | — | 0 |
| $/Mtok output | — | 0 |
| Use cases | Scoped Agentic, Memory Augmented Chat, Long Running Session | Scoped Agentic, Memory Augmented Chat, Long Running Session |
Where they differ (10)
Rows where both sides have data and the values disagree — the shortlist of dimensions that actually distinguish these two systems.
| Microsoft Edge Copilot Mode + Journeys (now Copilot in Edge) | Perplexity Comet | |
|---|---|---|
| Capability composite | 60 | 68 |
| Type | Tab-context + Journeys session-grouping | Conversation across pages + browser-history memory |
| Created | 2025-07-28 (Copilot Mode announced); 2025-10 (rolled out all Copilot markets) | 2025-07-09 (limited launch Windows/macOS); 2025-10-02 (public release free worldwide) |
| Pricing | Free in Edge (Journeys free on desktop in English markets); Browse with Copilot requires Microsoft 365 Premium (US); M365 Personal/Family/Premium get extended usage | Free (since Oct 2025); optional Comet Plus $5/mo; Perplexity Pro $20/mo / Max $200/mo |
| Funding | Microsoft public (MSFT); ~$3T market cap | Perplexity $1.4B+ total raised; $21.2B valuation (Series E-6 early 2026) |
| Backend storage | custom (Microsoft-managed) | custom |
| Deployment | Managed-only (Edge browser with Microsoft account) | Managed (desktop Mac/Windows + iOS/Android apps) |
| MCP | searched not found | Comet Assistant supports MCP servers via comet://settings/connectors |
| Optimised for | tab-context grouping into resumable Journeys | AI-native browsing + cross-page memory |
| Anti-fit | not for non-Edge browsers | not for enterprise / managed-browser environments |
At a glance
| Microsoft Edge Copilot Mode + Journeys (now Copilot in Edge) | Perplexity Comet | |
|---|---|---|
| Section | Browser-agent memory | Browser-agent memory |
| Tier | T1 | T1 |
| Type | Tab-context + Journeys session-grouping | Conversation across pages + browser-history memory |
| Created | 2025-07-28 (Copilot Mode announced); 2025-10 (rolled out all Copilot markets) | 2025-07-09 (limited launch Windows/macOS); 2025-10-02 (public release free worldwide) |
| Pricing | Free in Edge (Journeys free on desktop in English markets); Browse with Copilot requires Microsoft 365 Premium (US); M365 Personal/Family/Premium get extended usage | Free (since Oct 2025); optional Comet Plus $5/mo; Perplexity Pro $20/mo / Max $200/mo |
| Funding | Microsoft public (MSFT); ~$3T market cap | Perplexity $1.4B+ total raised; $21.2B valuation (Series E-6 early 2026) |
| Backend storage | custom (Microsoft-managed) | custom |
| Deployment | Managed-only (Edge browser with Microsoft account) | Managed (desktop Mac/Windows + iOS/Android apps) |
| Embedding | — | locked |
| Multi-tenancy | hard-isolation | hard-isolation |
| MCP | searched not found | Comet Assistant supports MCP servers via comet://settings/connectors |
| A2A | searched not found | searched not found |
| OpenTelemetry | searched not found | searched not found |
| Optimised for | tab-context grouping into resumable Journeys | AI-native browsing + cross-page memory |
| Anti-fit | not for non-Edge browsers | not for enterprise / managed-browser environments |
Taxonomy
| Axis | Microsoft Edge Copilot Mode + Journeys (now Copilot in Edge) | Perplexity Comet |
|---|---|---|
| storage | kv | file |
| retrieval | injection | similarity |
| persistence | cross-session | long-term |
| update | consolidation | append-only |
| unit | episode | episode |
| governance | user-controllable | opaque |
| conflict | none | none |
Pros & cons
Microsoft Edge Copilot Mode + Journeys (now Copilot in Edge)
Pros: Journeys timeline memory — cross-tab, cross-session reconstruction of research arcs — is more sophisticated than competitor history features.
Cons: Edge browser lock-in; Microsoft account required to retain Journeys across devices.
Perplexity Comet
Pros: First search-engine-native browser agent — memory of past searches and tabs is part of the product premise.
Cons: Limited to what Perplexity sees; cross-browser portability is not on the roadmap.