Opera AI (formerly Aria)
https://blogs.opera.com/news/2025/02/aria-gets-memory-feature-new-ai-feature-drop/
Memory feature stores user-declared preferences and facts; injected into future prompts. Understands current tab content; manages open tabs contextually. Memory off by default, end-user controlled, stored alongside the prompt rather than the LLM.
Active · Verified 2026-10-22 · fresh as of 2026-10-22 · 39 cited facts, 2 with a third-party source · 1 recorded change · Suggest a correction
At a glance
- Type
- User-declared preferences + tab management vendor fix
- Tier
- T2
- Section
- Browser-agent memory
- Created
- searched not found fix
- Latest release
- not applicable — not OSS fix
- License
- not applicable — not OSS fix
- GitHub
- not applicable — no GitHub repo fix
- Freshness
- 2026-10-22 fix
- Layer
- agent-infra repo fix
- Licensing
- commercial vendor fix
Memory taxonomy
- storage
- kv
- retrieval
- injection
- persistence
- long-term
- update
- overwrite
- unit
- fact
- governance
- user-controllable
- conflict
- none
When to use
Optimised for: user-declared preferences + tab management
Anti-fit: not for enterprise programmatic use
Pros & cons
Pros
Memory layered into a long-running browser brand with strong gaming + creator audience.
Cons
Opera-browser-only; smaller AI mind-share than Edge or Comet.
Claims & capabilities
Opera browser ~350M users globally. Memory feature shipped in Opera Developer Feb 2025.
Technical surface
- API surface
- not applicable — browser feature
- Backend storage
- custom
- Deployment
- Managed-only (Opera browser)
- Embedding model
- locked
- Multi-tenancy
- not applicable — single-user
- MCP
- yes (Opera Neon only) — MCP Connector lets external AI clients drive the browser (Mar 2026); simplified connector promised for Opera One/GX
- A2A
- searched not found
- OpenTelemetry
- searched not found
Alternatives to Opera AI (formerly Aria) → live options ranked by shared design, licence, hosting and MCP support
Similar systems
Other browser-agent memory in the catalog, ranked by inbound references.
- Browserbase T1
Cloud browser infrastructure for AI agents. Headless Chromium sessions with persistent cookies, localStorage, session recording — agent workflows carry state across runs. Memory at the session/automation tier rather than conversational.
- Brave Leo T2
Privacy-focused integrated assistant. Memory is user-curated: explicit facts and preferences persist across all sessions, stored locally with no server retention. Agentic browsing experiment (Brave Nightly Dec 2025) takes multi-step actions inside sites referencing those preferences.
- Dia (Atlassian) T1
The Browser Company's AI-native browser; Atlassian acquired The Browser Company for $610M cash (announced 2025-09, closed 2025-10-21). Stores summaries and preferences locally; opt-in @history feature references up to 7 days of browsing as context. History/chats/bookmarks encrypted local-first.
- Fellou T1
Silicon Valley. Spatial agentic browser with explicit Agentic Memory layer learning from history and notes for instant recall of past research sessions. Operates on logged-in accounts (Quora, X, etc.); runs tasks while user is idle.
- Microsoft Edge Copilot Mode + Journeys (now Copilot in Edge) T1
Copilot Mode retired 2026-05-13; its features now ship as Copilot in Edge. Journeys clusters browsing history into topic cards on the new tab page (desktop, and US mobile); Copilot long-term memory can reference past chats and browsing history with user controls; agentic 'Browse with Copilot' (formerly Copilot Actions) for US Microsoft 365 Premium.
- Perplexity Comet T1
AI-native Chromium-based browser. Assistant operates across tabs and sessions; persistent memory of preferences; multi-step agentic tasks without leaving the browser. Memory is opt-in and server-side; enterprise memory tier separately available.
Sources (38 cited facts, 2 third-party)
Each fact links to the page it came from; the badge says who published it (how to read sources).
- What it is User-declared preferences + tab management vendor
- What it does & what's distinct Memory feature stores user-declared preferences and facts; injected into future prompts.… vendor
- Claims / benefits Opera browser ~350M users globally. Memory feature shipped in Opera Developer Feb 2025. vendor
- Modalities text vendor
- Funding Opera public (OPRA on NASDAQ); founded 1995; market cap ~$1.5B vendor
- Customers / scale ~350M global Opera browser users; no memory-feature-specific count disclosed vendor
- Pricing Free (included with Opera browser); Opera One Pro has additional AI credits vendor
- Data handling Third-party AI model providers process conversation data; may be stored anonymously by p… third-party
- Deployment Managed-only (Opera browser) vendor
- HQ Oslo, Norway vendor
- Founders / pedigree Founded 1995 by Jon Stephenson von Tetzchner (also founded Vivaldi) and Geir Ivarsøy third-party
- Memory volume / scale no scale claim vendor
- Backend storage custom vendor
- Encryption at-rest + in-transit vendor
- Embedding model locked vendor
- Tombstoning hard-delete supported vendor
- Schema evolution free-form / no schema vendor
- Contradiction handling always overwrite (last-write-wins) vendor
- Forgetting policy user-controlled forget vendor
- MCP support yes (Opera Neon only) — MCP Connector lets external AI clients drive the browser (Mar 20… vendor
- Validated verticals consumer / individual vendor
- Time to running <10min (Opera browser) vendor
- Anti-fit not for enterprise programmatic use vendor
- Optimised for user-declared preferences + tab management vendor
- Adjacent infrastructure self-contained Opera vendor
- Pros Memory layered into a long-running browser brand with strong gaming + creator audience. vendor
- Cons Opera-browser-only; smaller AI mind-share than Edge or Comet. vendor
- Project & sources Opera AI memory vendor
- cost-input-usd-per-mtok 0 vendor
- cost-output-usd-per-mtok 0 vendor
- cost-tier free vendor
- cost-pricing-model free-tier vendor
- cost-last-verified 2026-06-29 vendor
- architecture-deployment-locus cloud vendor
- licensing-bucket commercial vendor
- positioning-platform-vs-product product vendor
- taxonomy-three-layer-rollup agent-infra repo
- maturity alpha vendor
What changed
Changes to this record's lifecycle, licence, release, pricing and hosting facts, from the catalog's git history. Subscribe (Atom)