Microsoft Copilot
Public (parent Microsoft, NASDAQ: MSFT)
AI assistant suite · Redmond, WA
Microsoft's AI assistants built into its Office apps, Windows and GitHub.
Copilot is the clearest test of distribution as a moat: Microsoft can put AI in front of hundreds of millions of workers who already use its software. It mixes models in practice, using OpenAI's and, increasingly, Anthropic's; Copilot Cowork, launched in June 2026, runs on Anthropic models. In September 2026 Microsoft moved Copilot to a mix of per-user licenses and usage-based billing for AI agent work.
WatchWhether usage-based pricing lifts Copilot revenue and how Microsoft splits the work between OpenAI and Anthropic models.
Cursor (Anysphere)
Public (parent SpaceX, NASDAQ: SPCX)
AI coding tool · San Francisco, CA
An AI-powered code editor and coding agent used by professional software developers.
Cursor became one of the fastest-growing software products ever by building on top of other companies' models, then began training its own, including one built on Moonshot AI's open-weight Kimi. SpaceX bought it in an all-stock deal that closed in August 2026, and Cursor now works with SpaceX's xAI on model training. It is the leading example of an app that started as a wrapper and moved down the stack.
WatchWhether it stays neutral across models (it still offers Claude and GPT) or tilts toward xAI's Grok.
Perplexity
Private
AI answer engine · San Francisco, CA
An AI answer engine that searches the web and responds with cited answers, plus an AI browser called Comet.
Perplexity is the best-known challenger to Google search in the AI era, and it made headlines in August 2025 with an unsolicited $34.5 billion bid for Google's Chrome browser. It faces lawsuits from Dow Jones and Reddit over its use of their content, and a legal threat from Amazon over its shopping agent, making it a test case for how AI can use other people's content and websites.
WatchCourt outcomes in its publisher and Amazon disputes, which will shape what AI agents are allowed to do on the web.
Salesforce
Public (NYSE: CRM)
Business software giant · San Francisco, CA
Sells customer-relationship software for sales, service and marketing teams, now with AI agents called Agentforce.
Salesforce is betting that AI agents will be sold as part of the business software companies already run on; it said Agentforce annual recurring revenue topped $1.5 billion in its latest quarter. It bought data-management company Informatica for about $8 billion (closed November 2025) to feed those agents clean data, and partners with both Anthropic and OpenAI. In live events, Live Nation is rolling out an Agentforce venue agent at US venues.
WatchWhether Agentforce lifts Salesforce's roughly 11% overall growth, and how it absorbs its announced acquisition of AI customer-service firm Fin.
Palantir
Public (NASDAQ: PLTR)
Data and AI software · Miami, FL
Sells software that lets governments and companies combine their data and put AI to work on real operations.
Palantir has become one of the clearest AI winners at the application layer, with revenue up 93% year over year in the April to June 2026 quarter and US commercial revenue up 149%. Its edge is deep integration into customers' operations, from the US Army, under an enterprise agreement worth up to $10 billion over ten years, to corporate supply chains. Its premium valuation assumes that growth continues for years.
WatchWhether it can sustain growth near 90% and how political pushback in Europe affects its government business.
Harvey
Private
Legal AI platform · San Francisco, CA
Builds AI tools that help lawyers research, draft and review legal documents.
Harvey is the leading example of a vertical AI app: software built for one profession and sold at premium prices. It says about 80% of the largest US law firms (the Am Law 100) use it, and it raised $550 million in September 2026. Its challenge is staying ahead as general-purpose models get better at legal work.
WatchWhether it expands into corporate legal departments and international markets faster than rivals and the model labs themselves.
ElevenLabs
Private
AI voice company · London, UK / New York, NY
Makes AI voices for narration, dubbing and customer-service agents, plus AI music tools.
ElevenLabs leads in realistic AI speech, used to dub content into other languages, voice audiobooks and run voice agents. It said its annual recurring revenue passed $500 million in May 2026, and in September 2026 it signed a multiyear licensing deal with Universal Music Group. For sports media, it is the kind of tool behind AI-generated commentary and instant translation.
WatchAn IPO filing, which its recent senior finance hires suggest may be coming, and how rights holders respond to AI voices.
Runway
Private
AI video generator · New York, NY
Builds AI models that generate and edit video, used by filmmakers, studios and advertisers.
Runway is one of the leading independent AI video companies, with studio and network partnerships including Lionsgate and AMC Networks. It raised $315 million in February 2026 and is expanding into world models that simulate environments. It competes with far larger rivals, including Google, on video generation.
WatchWhether studios and advertisers adopt AI video at scale, and whether its world models open markets like gaming and robotics.
Midjourney
Private
AI image generator · San Francisco, CA
A small, self-funded company whose AI models generate images and short videos from text prompts.
Midjourney built a large paying user base with no outside investors, proof that a lean AI app can build a real business without a giant lab behind it. In August 2025 Meta licensed its technology for Meta's own models. It is also a defendant in copyright suits from Disney, Universal and Warner Bros. Discovery, a major test of AI and copyright.
WatchRulings in the studio copyright lawsuits, which could affect the entire image and video generation category.
Apple
Public (NASDAQ: AAPL)
Consumer devices giant · Cupertino, CA
Makes the iPhone, Mac and other devices, and builds AI features into them under the Apple Intelligence brand.
Apple owns the most valuable distribution channel in consumer tech but has lagged in building frontier models. In January 2026 it chose Google's Gemini as the basis for its next-generation models, and a rebuilt Siri developed with Google began rolling out in September 2026. It also offers ChatGPT inside Siri for some requests.
WatchHow users respond to the new Siri, whether Apple charges for it, and when it launches in Europe and China.
Cognition
Private
AI coding agents · San Francisco, CA
Builds Devin, an autonomous AI software engineer, and the Windsurf coding editor it acquired in 2025.
Cognition is betting that coding will shift from AI assistants to AI agents that complete whole tasks on their own. It bought Windsurf in July 2025 after Google hired Windsurf's leaders, and it said its annualized revenue passed $1 billion in September 2026. It competes directly with Cursor and with coding tools from the labs themselves.
WatchWhether autonomous coding agents win enterprise budgets against Cursor and the labs' own tools.
Sierra
Private
Customer service AI · San Francisco, CA
Builds AI agents that handle customer-service conversations for large brands.
Co-founded by Bret Taylor, who is also OpenAI's board chair, Sierra is a leading example of AI agents taking over call-center work. It prices partly on outcomes, such as resolved conversations, rather than per seat, a model many software companies are studying. Its customers include ticket marketplace Vivid Seats and SiriusXM.
WatchWhether outcome-based pricing sticks, and how it fares against Salesforce's push into the same market.