SumizAI vs Microsoft Copilot

What Microsoft Copilot is

What Microsoft Copilot is

Microsoft Copilot is Microsoft's AI assistant, free in its basic version, available through a browser at copilot.microsoft.com, as a mobile app, and integrated directly into the Bing search engine. It combines chat with a language model, web search with cited sources, image generation, and voice interaction in one place, signed in with an ordinary Microsoft account rather than a separate profile.

From Bing Chat to Copilot

The service launched in February 2023 as "the new Bing" — a chat feature built directly into the search engine, powered by an early OpenAI model. That same year Microsoft renamed it Copilot and moved it beyond the search engine itself: onto a standalone site, a mobile app, and integrations across the Office suite. The rename reflected the ambition to turn a search-engine add-on into a standalone product.

Key features

Chat answers come with clickable source citations, letting the user immediately check where a piece of information came from — a legacy of the Bing search integration. Image generation lets you create graphics from a text description without leaving the chat window. Voice mode allows a spoken rather than typed conversation, useful when using a phone on the move. The business version, Copilot Chat, draws on the user's own company data (email, files, calendar) through so-called work-data grounding, something the consumer version doesn't offer.

Who it's for

The free version suits anyone wanting a quick, cited answer without paying — students, journalists, people fact-checking. The paid version bundled into Microsoft 365 Premium targets Office subscribers who want AI built directly into Word, Excel, or Outlook. The business version, Copilot Chat, and the full Copilot add-on target companies already running Microsoft 365 and Teams.

Use cases

In practice Copilot works well for quick, source-cited research, sketching an image for a presentation, or summarizing a long article found online. Someone working in the Office suite can ask for a summary of an email thread or a first draft of a document generated directly inside the app, without copying content between windows.

Pricing and business model

The free version of Copilot includes chat, cited web search, image generation, and voice, with usage limits during busy periods. Microsoft retired the standalone Copilot Pro plan ($20/month) in late 2025 — existing subscribers can keep using it until support ends on August 1, 2026, while new sign-ups land on Microsoft 365 Premium (about $19.99/month), which bundles AI in the Office apps together with up to 6 TB of cloud storage. On the business side, Copilot Chat is free with an eligible Microsoft 365 subscription, while the full Copilot add-on costs about $30 per user per month and unlocks the desktop Office apps and Teams integration.

The engine underneath

Copilot runs on OpenAI's GPT-5, with GPT-5.5 currently rolling out, and as of January 7, 2026, commercial customers also gained access to Anthropic's Claude models within the same interface — Microsoft no longer limits itself to a single model provider.

Limitations and what to watch for

The free version has usage limits during peak hours, which can be frustrating under heavy use. The business version with access to company data needs careful permission configuration so the assistant doesn't see more than it should. The history of name and plan changes (Bing Chat → Copilot, Copilot Pro → Microsoft 365 Premium) means it's worth checking the current plan name before buying, since older articles online may be outdated.

AI notes from Copilot's answers

Copilot has no built-in mechanism for saving answers as lasting notes — a valuable, source-cited answer a user wants to keep as an ai notes entry has to be copied manually into a different app. Building an archive of ai notes from conversations held in Copilot requires an extra step after every worthwhile exchange, with no automatic filing or duplicate checking.

What's worth checking before choosing

Before committing to a paid plan, check whether the free version's limits actually get in the way of daily use, and whether what you want is integration with a specific Office app or simply cited chat on its own.

Copilot inside the Edge browser

Beyond the standalone site and app, Copilot is also built directly into the Edge browser's sidebar, where it can answer questions about the currently open page without copying its content into a separate chat window. For people already using Edge as their default browser, this integration means the barrier to trying Copilot is essentially zero — the assistant is one click away from any open tab.

Bottom line

Microsoft Copilot is a free-at-base AI assistant with cited sources and Bing/Office integration, but no lasting conversation archive. Anyone who wants worthwhile ai notes from such conversations to land automatically in a searchable archive without manual copying should consider a tool built around that workflow.

Comparison with SumizAI

Copilot and SumizAI differ fundamentally in scope and in how they connect to AI. Copilot is an assistant tied into the Microsoft ecosystem with no note archive of its own, running on models Microsoft itself selects (GPT-5, soon also Claude). SumizAI turns conversations with an AI model into ai notes — answers worth keeping land automatically as Markdown files in a vault the user owns, and the model itself is chosen from seven providers (including Anthropic and OpenAI) on the user's own API key, paying the provider directly. Anyone who wants free, cited chat built into Office will pick Copilot; anyone who wants ai notes from AI conversations to build a lasting, searchable archive will find SumizAI the better-fitting tool.

That is our reading of the record. For AlternativeTo's own wording, see its page for Microsoft Copilot — the facts above were read on 2026-08-16.

Microsoft Copilot in depth

From Bing Chat to Copilot

The product catalogued here under the old slug for Bing Chat is now Microsoft Copilot. It began as an AI layer bolted onto the Bing search engine, letting people ask questions in ordinary language, follow up conversationally, and receive a single synthesised answer with citations instead of a page of blue links. Early on it offered three conversational registers — Creative, Balanced and Precise — which shifted how freely the model would speculate. Underneath it drew on OpenAI's GPT-4 for text and DALL·E for image generation, and it was tightly bound to the Edge browser, where it lived in a sidebar alongside whatever page you were reading.

Microsoft has since detached the assistant from the search brand and turned Copilot into the umbrella name for AI across its whole product line. The consumer chatbot at copilot.microsoft.com is one member of a family that also includes Copilot inside Word, Excel, PowerPoint, Outlook and Teams, Copilot in Azure, GitHub Copilot for code and Security Copilot for defensive operations. Each of those is licensed separately, which is the single most common source of confusion when people try to work out what Copilot costs.

What the assistant does

The consumer assistant is a general-purpose chatbot with live web access. Directory listings enumerate its capabilities as conversational chat, writing assistance, text-to-image generation, text-to-speech, an ad-free interface, dark mode, cloud sync of conversations across devices, live preview, and no requirement to write code for any of it. It runs on Windows and macOS, on iPhone, iPad, Android phones and Android tablets, and in any browser, and it handles more than thirty-five languages including English, Spanish, French, German, Chinese, Japanese, Arabic and Hindi. For plain text conversations an account is optional, which is a genuinely unusual concession from a company of Microsoft's size.

The web grounding is the trait users mention most. Because the assistant searches before it answers rather than relying purely on training data, it tends to produce responses tied to current sources, and reviewers repeatedly single this out as its main advantage over assistants that answer from memory alone.

Recent changes worth knowing about

The feature set is not static, and 2026 brought a contraction on the free tier. Microsoft retired Deep Research in the consumer Copilot app on 18 August 2026. The company's own support documentation confirms the date, states that existing reports remain readable through chat history, and directs people who want to keep generating that kind of long-form cited analysis towards a replacement called Researcher, which requires a Microsoft 365 Premium subscription. Microsoft 365 Personal and Family subscribers lose the ability to create new Deep Research reports while keeping access to old ones. Press coverage at the time reported that two further features, Copilot Podcasts and Group Chat, were withdrawn on the same date.

Movement has gone the other way too. Microsoft has previously removed usage caps from free-tier features including Voice, which handles spoken conversation, and Think Deeper, which routes harder questions to a more deliberate reasoning path. Anyone comparing Copilot against rivals should check the current state of these features directly rather than relying on a comparison table, because the boundary between free and paid has moved several times.

What it costs

There is a usable free tier, and Microsoft's business pricing is published openly. On the commercial side the current published figures, billed annually, are:

• Microsoft 365 Copilot Business as an add-on to an existing Microsoft 365 plan: 18.00 dollars per user per month, reduced from a list price of 21.00 dollars, with an annual commitment required and the promotional rate applying to the first year only.
• Microsoft 365 Business Standard with Copilot: 23.50 dollars per user per month, or 20.30 dollars for the variant sold without Teams.
• Microsoft 365 Business Premium with Copilot: 32.00 dollars per user per month, or 28.80 dollars without Teams.

The add-on tier includes chat grounded in organisational data, reasoning capability, a set of pre-built agents named Researcher, Analyst and Facilitator, usage analytics, and the ability to choose which underlying model handles a request. On the consumer side, the standalone Copilot Pro subscription that Microsoft sold at twenty dollars a month has been restructured, with Microsoft 365 Premium taking over as the consumer tier that unlocks features such as Researcher. Because this part of the lineup has changed recently, the safest advice is to read Microsoft's current consumer store page rather than any secondary summary, this one included.

What users praise and what they attack

Directory ratings sit at roughly 3.8 out of five across fourteen ratings, with about ninety-six likes and seven written comments — a mediocre score for a product with Microsoft's distribution. The Apple App Store rating is far higher, around 4.84. That gap is itself informative: casual mobile users rate it well, while the technically engaged audience that writes directory reviews is markedly cooler.

Positive comments centre on the research-before-answering behaviour, a calm and uncluttered interface, the absence of a registration wall for text chat, current information from the live web, generous conversation limits, and reasonable recall across a session.

The criticism is blunter and clusters around a few themes. Content moderation draws the sharpest complaints: one reviewer describes the guardrails as extremely bad and objects that the assistant terminates the conversation outright when it decides a question is out of bounds, which is a worse failure mode than a refusal you can argue with. Privacy is the second theme, with users uneasy about Microsoft's data collection — one says plainly that they would not trust the service with personal data while still finding it useful for general questions. Capability is the third: reviewers accuse it of being weaker than competing models, including open-source ones, and suspect that the model behind the interface is throttled by Microsoft's own wrapper to control costs. Older complaints about rigid per-conversation message limits appear to have been overtaken by events, as those caps were later lifted. Several reviewers conclude that alternatives such as DeepSeek or DuckDuckGo's chat interface serve them better.

Who it fits

Copilot makes most sense for people already inside the Microsoft ecosystem, where the integration with Office documents, Outlook mail and Teams meetings turns it from a chatbot into something that can act on your actual work. It is also a reasonable default for anyone who wants cited, web-current answers without creating an account. It is a poor fit for anyone whose work brushes against topics that trip moderation filters, for privacy-sensitive users who object to the underlying telemetry, and for those who want to pick their own model or run one locally.

How SumizAI compares

SumizAI is a focused summarisation and analysis tool rather than a general assistant embedded in an operating system and an office suite. Copilot can summarise a document among many other things; SumizAI does that one job and does not attempt to be a search engine, an image generator or a meeting participant.

Product page: copilot.microsoft.com

What SumizAI is

A note-taking application built around a conversation with an AI model. You ask a question, the answer streams back, and the answers worth keeping become Markdown notes — filed into a vault that is a folder on your own disk.

A vault is a directory holding base.md, a generated table of contents up to six levels deep, and a notes/ folder with one .md file per note. Before a note is written it is checked against the ones already there, so the fourth note about the same idea gets merged instead of added. Links between notes are ordinary Markdown links to files that exist.

The model is never ours: you bring your own API key to one of seven providers — Anthropic, OpenAI, Gemini, Groq, OpenRouter, a local Ollama or your own server — and pay that provider directly. A question sends the table of contents plus at most five relevant notes within a 24,000-character budget, and the app shows you which five it used.

Every answer kept this way becomes one of these ai notes, ready to search again months later without hunting back through old chats.

Side by side

Where they differ

• Microsoft Copilot is a place to have the conversation. SumizAI is not a chatbot — the conversation is the input, not the product. What comes out of it is a .md file with a title, a place in base.md and a duplicate check against the notes already in the vault. If you only want to talk to a model, you do not need SumizAI.
• Microsoft Copilot is freemium: there is a free tier and a paid one, and the line between them is the thing to read before committing. SumizAI has one plan at a dollar a month, so there is no feature held back for a higher tier — and an unpaid account still opens and exports every vault it already has.
• AlternativeTo's description of Microsoft Copilot does not mention Markdown, so check what format your notes end up in before you fill it up. SumizAI writes standard .md files to a folder you picked, and an unpaid account can still export all of them.
• Both search. SumizAI's search reads the whole note — title, summary, body and the original question and answer — rather than titles alone.

Which one to pick