
Watch Microsoft Build 2026 from San Francisco
- By
- CNET
- Length
- 2 h 20 min
- Language
- English
- Text from
- the video's captions
- Transcribed
- 13 October 2026
Summary
This is the Microsoft Build 2026 keynote from San Francisco, led by Satya Nadella. It covers the full AI stack from Windows edge devices and new silicon (RTX Spark, Surface RTX Spark Dev Box) through Azure data center infrastructure, Project Solara agent-first devices, Microsoft IQ context layers, MXC agent containment with Open Claw on Windows, the new GitHub Copilot app and Rayfin SDK, Agent 365 governance, M-Dash security, seven new MAI models, frontier tuning, a Mayo Clinic health model partnership, Microsoft Discovery, and the Majorana 2 quantum announcement. The closing message urges developers to participate fully in the frontier intelligence ecosystem so technology unlocks opportunity rather than concentrating power.
Key points
- Satya Nadella frames Build 2026 around how developers participate fully in the frontier intelligence ecosystem, spanning compute fabric, models, context, tools, runtimes, security and governance.
- Windows ML expands to the full GPU install base, and two new inbox models are announced: ion instruct (an efficient reasoning SLM) and ion plan (a local agentic loop).
- New hardware includes AMD Ryzen, Intel Panther Lake, Qualcomm Snapdragon X2 Elite and Snapdragon C, and Nvidia's RTX Spark SOC, showcased in the Surface Ultra and the new Surface RTX Spark Dev Box with one petaflop of AI compute and 128 GB of unified memory.
- Azure now spans more than 500 data centers in 80 regions, with Fairwater as its first AI super factory, Maya 200 delivering 30% improved tokens per dollar, and Cobalt 200 Arm VMs announced in preview.
- Project Solara introduces agent-first devices: a stationary desk device on MediaTek silicon and a portable digital badge on Qualcomm silicon, with partners like AccuWeather, Best Buy, CVS Health, Levi's and Target exploring workflows.
- Microsoft IQ unifies Web IQ, Fabric IQ and Work IQ as a context layer for agents, demonstrated with a power utilities control center agent.
- Microsoft Execution Containers (MXC) bring OS-enforced isolation to agents on Windows, and Open Claw runs on Windows with a new companion app, granular permissions and an Open Claw Foundation.
- Mustafa Suleyman announces seven new MAI models across image, voice, transcription and coding, plus a Mayo Clinic partnership for a frontier health model, and Satya closes with the GA of Microsoft Discovery and the Majorana 2 topological qubit.
Questions it answers
00:00Opening theme
What is the main theme of Build 2026?
He frames the conference around developers participating fully in the frontier intelligence ecosystem, unpacking a stack of compute fabric, models, context, tools, runtimes, and governance.
- Value comes from what you build on top of the platform, not any single technology.
- The AI stack spans edge and cloud compute, models, context, tools, runtimes, and security.
02:17Windows and local AI
How is Windows delivering local onboard AI?
Windows ML expands to the full GPU install base, with new inbox models ion instruct and ion plan enabling a full local agentic loop without cloud round trips.
- Outlook, PowerPoint, Teams and Adobe apps already use onboard AI.
- New silicon from AMD, Intel, Qualcomm and Nvidia's RTX Spark powers devices like Surface Ultra and the Surface RTX Spark Dev Box.
11:04Windows dev tools demo
What new Windows developer features were demoed?
Kayla shows the distraction-free dev environment, vertical taskbar, intelligent terminal with Copilot, WSL containers, a 120B-parameter local model using 3.4 million tokens, and three local models running simultaneously.
- 70+ Linux utilities like grep come to Windows; Starship, ZSH and Homebrew go native.
- A public repo with winget configure lets anyone replicate the dev setup.
17:36Azure and Fairwater
What is Microsoft building in the cloud for AI workloads?
Azure spans 500+ data centers in 80 regions, with Fairwater as its first AI super factory, Maya 200 delivering 30% better tokens per dollar, and Cobalt 200 Arm VMs announced in preview.
- Three dominant workloads: training, inference, and agent runtime.
- Fairwater's closed-loop cooling uses roughly a restaurant's worth of water per year.
25:06Jensen Huang conversation
What did Jensen Huang say about RTX Spark and Vera Rubin?
Jensen describes RTX Spark as enabling a personal AI that can run autonomous agents on the PC, and Vera Rubin as designed for agentic workloads with encrypted data in transit and in use.
- Microsoft deployed the largest number of Grace Blackwells in the world.
- Token generation cost cut by roughly 30x over Hopper.
37:06Project Solara
What is Project Solara?
Solara is a chip-to-cloud platform for agent-first devices — a stationary desk device on MediaTek silicon and a portable digital badge on Qualcomm silicon — extensible across verticals like healthcare and retail.
- The next computer is not one device but a constellation working as one system.
- AccuWeather, Best Buy, CVS Health, Levi's and Target are exploring the platform.
51:00Microsoft IQ and data
How does Microsoft IQ ground agents in context?
Microsoft IQ combines Web IQ for fresh web grounding, Fabric IQ for semantic models and ontologies, and Work IQ for live organizational procedures, shown in a power utility control center demo.
- Horizon DB is a new managed PostgreSQL service with 3x throughput vs self-managed.
- Web IQ is model-agnostic and MCP-native, best in class on quality, speed and cost.
1:02:00MXC and Open Claw
How is Microsoft securing autonomous agents on Windows?
MXC is a new OS-native policy layer offering process, session, VM and Windows 365 isolation; Open Claw runs on Windows with a companion app, granular permissions and a new Open Claw Foundation.
- A demo showed MXC read-only sandbox blocking Open Claw from deleting desktop files.
- Open Claw's harness is now a plugin — bring Copilot, Codex, or your own.
Notes
The Big Theme
- Satya Nadella opens Build 2026 in San Francisco with one key takeaway: how developers participate fully in the frontier intelligence ecosystem.
- The AI stack unpacked at the conference: compute fabric (edge + cloud), models/context/tools, agent runtime, tooling, and security/compliance/governance.
Edge: Windows and Local AI
- Goal of "unmetered intelligence to every desk and every home" — local onboard AI already powers Outlook summarize, PowerPoint, Teams super resolution, and Adobe apps via Windows ML.
- Windows ML expands to the full GPU install base; two new inbox models: ion instruct (efficient reasoning SLM) and ion plan (local agentic loop).
- Hardware partners: AMD Ryzen, Intel Panther Lake, Qualcomm Snapdragon X2 Elite and Snapdragon C (sub-$500 PCs), and Nvidia RTX Spark SOC (CPU+GPU+AI, unified memory).
- Surface Ultra (128 GB unified memory) and the Surface RTX Spark Dev Box: one petaflop AI compute, 20 CPU cores, 128 GB unified memory, coming this fall.
- Windows 365 gets a developer distribution; dev updates include distraction-free mode, intelligent terminal with Copilot, 70+ Linux utilities (grep etc.), Starship/ZSH/Homebrew native, and WSL containers.
- Kayla demos: vertical taskbar, winget configure repo, PowerToys Grab and Move, end task, Git-aware File Explorer, running a 120B-parameter model locally (~3.4M tokens used), 90 GB RAM utilized by GPU, three local models simultaneously.
Cloud: Azure Infrastructure
- Driving equation: tokens per dollar per watt. Azure: 500+ data centers, 80 regions; more capacity added in last 18 months than Azure's first decade.
- Three dominant AI workloads: training, inference, agent runtime. Fairwater (Georgia, Wisconsin): two-story AI super factory, closed-loop cooling with near-zero water use.
- First cloud to validate Nvidia Vera Rubin; Maya 200 live in Iowa and Arizona, 30% better tokens per dollar, powering Microsoft 365 Copilot. Cobalt 200 Arm VMs preview: 33% lower agent latency, 23% higher throughput.
Jensen Huang Conversation
- RTX Spark: petaflop NVFP4, 128 GB memory fits ~200B-parameter model; PC becomes "personal AI" that can be texted to run tasks autonomously.
- Vera Rubin designed for agents; Vera CPU designed for low latency; Grace Blackwell deployments at Microsoft are the largest in the world; token generation cost cut ~30x vs Hopper.
- GitHub commits up 3x in recent months; all Azure data tools (SQL, Spark, vector, graph) being GPU-accelerated for impatient agents.
Project Solara
- New chip-to-cloud platform for agent-first devices — "the next computer is not one device."
- Two preview categories: stationary desk device (MediaTek, Hello for Business sign-in, ambient Microsoft 365 Copilot with Work IQ) and portable digital badge (Qualcomm silicon, fingerprint unlock, camera capture, agent-driven workflows).
- Verticals: healthcare (nurse documentation, patient vitals), retail, industrial, hospitality, financial services. Explorers: AccuWeather, Best Buy, CVS Health, Levi's, Target.
Microsoft IQ and Data
- Horizon DB: fully managed PostgreSQL on Azure — zone redundant, 128 TB per cluster, 15 read replicas, ~3x throughput vs self-managed.
- GPU-accelerated Fabric data warehouse: 7x performance gain.
- Web IQ: model-agnostic, MCP-native web grounding on infrastructure serving 1B+ users; best in quality, speed, cost.
- Demo: power utility agent combining Web IQ (current prices), Fabric IQ (grid ontology from Power BI semantic models + live telemetry), Work IQ (SharePoint response procedures), running via Foundry routines with a Teams incident brief.
Agent Runtime, Security, Tools
- MXC (Microsoft Execution Containers): OS-native policy isolation for agents — process, session, VM/WSL, or Windows 365 for full isolation.
- Open Claw on Windows: companion app (WinUI 3), sandboxed tool calls, granular folder permissions; demo of read-only sandbox blocking file deletion; Open Claw Foundation non-profit announced; harness itself now a plugin (Copilot, Codex).
- GitHub Copilot app: home base with parallel sessions via Git worktrees, agent merge babysitting PRs, model picker (OpenAI, Anthropic, Google), rubber duck review across models, agent-built canvases for custom UI.
- Rayfin: agent-first SDK connecting agents to a backend-as-a-service on Fabric; partnership with Replit.
- Agent 365: agent control plane — Entra identities, Defender real-time defense, Purview data protection; works across AWS/GCP and any framework; GA of SDK; Foundry hosted agents with micro VMs, persistent file systems, generated rubrics, and an agent optimizer (tunes model, instructions, tools, skills).
- M-Dash: multi-model agentic security system, 100+ agents, topped Cyber Gym benchmark; found a real Wasmtime bug spanning three code areas; coming to CLI and Defender portal.
Copilot and Autopilots
- Copilot evolves into a super app: chat, Co-work, and code by summer.
- Autopilots: enterprise-grade claws — autonomous long-running agents with names, personalities, memory, running in your tenant. First: Scout, available today for Copilot Frontier users; a full digital team of autopilots coming.
MAI Models (Mustafa Suleyman)
- Philosophy: humanist superintelligence — AI that serves people, not replaces them.
- Seven new models: MAI Image 2.5 (+Flash, #2 on leaderboard, beating Nano Banana 2), MAI Transcribe 1.5 (best in world, 43 languages, 5x faster), MAI Voice 2 (+Flash, 15 languages), MAI Thinking 1 (35B active param MoE, 256K context, 53% SWE-Bench Pro, on par with Opus 4.6, zero distillation, clean data lineage), MAI Code 1 Flash (5B params, 51% SWE-Bench Pro, in VS Code today).
- Available on Foundry, OpenRouter, Fireworks, Baseten; co-designed with Maia 200 silicon (further 1.4x perf/watt).
- Mayo Clinic partnership: jointly develop a frontier health model on Mayo's platform data (100M people, four continents).
Frontier Tuning
- Every company should build its own "hill-climbing machine": private evals, RL environments (RLEs), enterprise knowledge.
- Demo with Land O'Lakes: RL gym from M365 signals, skills with rubrics, virtualized tools, hill-climbed to >90% accuracy, ~10x more efficient than baseline.
- McKinsey tuning: highest win rate, outperforming GPT-5.5 at 10x cost efficiency. "Your RLEs and models become your moat."
Discovery and Quantum
- Microsoft Discovery GA: agentic scientific loop — models + HPC + knowledge graphs + automated labs. Demo: PET plastic recycling proteins, 80 candidate proteins, DNA sequences sent to Cambridge Consultants' automated lab.
- Majorana 2: topological qubits with 20-second to one-minute lifetimes (1000x Majorana 1), 1-microsecond operations, million qubits possible on a chip smaller than a credit card.
Closing
- Two possible stories about this moment: tech concentrates power, or tech unlocks opportunity for developers, scientists, enterprises and communities. "Our job is to make the second story true."
Text from the video's own captions. Summary and notes written by AI from the transcript, so check anything important against the recording.
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