Microsoft Revamps Copilot: Home, Code, Autopilot, and Usage-Based Billing

A forum analysis of Microsoft's September 25, 2026 Copilot redesign, which reorganizes the assistant into three entry points — Home, Code, and Autopilot — and pivots pricing from per-seat subscriptions toward usage-based Copilot Credits.

Key points

• Home: Merges Chat and Cowork and embeds Word, Excel, and PowerPoint. Chat handles short requests (look up a number, summarize meeting notes, draft a reply); Cowork handles long, deliverable-oriented tasks such as RFP responses, release material kits, client briefings, or a full financial close package. The embedded Office is not a web preview — Copilot generates or updates real documents, workbooks, and presentations that stay in sync with native Office apps and remain co-editable; PowerPoint applies organizational templates, Excel explains changes and recommends charts.
• Code: A natural-language app builder for non-programmers (e.g., business users who model in Excel but write no product code), sharing a technical foundation with GitHub Copilot. Outputs range from desktop widgets and interactive dashboards to cloud-hosted internal apps. Code runs in sandboxes and can be hosted in the customer's own Microsoft 365 tenant via Copilot Managed Runtime (public preview), a unified, IT-governed runtime for apps from Cowork, Code, and Copilot Studio, planned to open to third-party and professional developers.
• Autopilot: The renamed resident agent shown as Scout at Build 2026 (June). Users assign it a name, a role, and a goal; it runs in the cloud with its own identity, memory, execution environment, and workspace inside the tenant, persisting after users leave, and appearing in Teams, Outlook, chats, channels, and documents under org permissions, auditing, and governance. Example use case: vendor management — maintaining timelines, preparing meetings, following up with stakeholders.

The billing shift: from seats to usage

Seat subscriptions continue to cover everyday use (Chat plus Copilot features in Word, Excel, PowerPoint, Outlook, Teams). Long-task features — Cowork, Code, Autopilot, resident agents, and the latest frontier models (Microsoft names Astra and Fable) — move to usage-based Copilot Credits. Satya Nadella framed the direction in July investor communications as "from per-seat toward per-seat plus usage." New cost-management tooling lets employees see the cost of their own AI usage.

| Metric | Figure | Source | |---|---|---| | M365 Copilot commercial add-on price | $30/user/month | Microsoft pricing, media reports | | Commercial Office 365 seats | 450 million+ | CNBC | | Share with Copilot licenses | under 7% | CNBC | | Paid Copilot seats (July disclosure) | 30 million+ | Microsoft, media reports |

The 30 million paid seats against 450 million commercial seats are two faces of the same number: the unbought 93% is exactly the audience usage-based billing aims to reach — let people use it free, then charge for actual consumption.

Model layer

Copilot remains model-open: users can pick OpenAI or Anthropic models, or use Auto mode, which routes each request by accuracy, speed, and cost. Microsoft earlier this year made OpenAI's GPT-5.6 the preferred model for Microsoft 365 Copilot while continuing its own MAI model family and using Anthropic models for some tasks. A detail noted by CNBC: Microsoft's own models are selectable in Code, but not under the Home tab.

Context and timeline

Microsoft previously sold 365 Copilot and GitHub Copilot coding agents as separate products; Jacob Andreou (EVP, Copilot) told CNBC that merging coding into Copilot is a catch-up move, as OpenAI and Anthropic already bundle chat, coding, and agents — Anthropic folded Cowork into Claude the week before. The new Copilot also absorbs Microsoft's consumer Copilot line; three consumer-only features (Copilot Podcasts, Group Chat, Deep Research) are discontinued, and the Mico mascot was retired in August after Nadella put Andreou in charge. Pending components: Today view (aggregating mail, calendar, Teams threads, meetings, tasks; private preview in October, later in Outlook and Teams) and @Copilot mentions in channels, group chats, and meetings (Teams private preview by month-end).

Quotes worth noting:

• Jared Spataro (CMO, Microsoft AI at Work): learning to build these things is becoming as fundamental as writing a memo or building a budget model.
• Jacob Andreou: the hallmarks of a great long-running agent are autonomy and flexibility — "and precisely these two things make it absolutely terrifying to IT admins."
• Charles Lamanna (Copilot core work features, to Bloomberg): Microsoft will not make a Copilot that acts like a personal companion.

Market reaction: shares rose about 3% in early trading on announcement day, briefly at $508.89 near the 20-day high of $509.14, on low volume (~22% of the 20-day average) — read as a product-cycle move, not a valuation trigger.

What to watch

• Whether the 7% adoption line moves — the only quantifiable success metric for usage-based billing.
• Managed Runtime governance boundaries once third-party developers plug in: who is liable for generated apps, and how licensing and auditing land.
• The Frontier routing layer: Microsoft says the system will eventually decide whether a request goes to Chat, Cowork, or Code — its accuracy determines whether "no mode picking" saves effort or creates friction.
• Agent identity governance: how Autopilot's tenant-directory identities integrate with existing IT lifecycle management, permission revocation, and incident attribution.
• Microsoft Ignite 2026 (November 17–20, San Francisco) for further details.

Sources

1. Jared Spataro, Microsoft official blog, 2026-09-25 2. Reuters, "Microsoft revamps Copilot with code generation, agentic AI tools," 2026-09-25 3. CNBC / GeekWire interviews with Jacob Andreou and Charles Lamanna, 2026-09-25 4. Bloomberg on merging consumer and enterprise Copilot product lines, 2026-09-25 5. Microsoft Ignite 2026 agenda (November 17–20, San Francisco)