Rippling

Sierra

Rippling

Rippling uses modular pricing — companies buy the modules they need and pay per employee per month. The core platform (employee directory) is the foundation, with add-on modules for payroll ($8/month per employee), benefits, time and attendance, learning management, IT device management, app management, corporate cards, and expense management.

This modular approach means Rippling can land with one module and expand to many. A company might start with just payroll, then add device management when they realize it's available, then corporate cards.

Average revenue per customer grows as companies add modules.

The compound effect is the strategy. Each individual module might not be the best standalone product, but the integration between modules creates value that no combination of point solutions can match.

When your payroll system, IT system, and expense system all share the same employee database, automation becomes trivial.

Sierra

Companies pay Sierra to run their customer service with AI agents instead of hiring rooms full of humans. The agent talks to your customers over chat.

It answers questions. It processes returns.

It updates subscriptions. Here is the clever part.

Sierra charges based on outcomes, not seats. Brands pay when the AI actually resolves a problem, not just for having the software installed.

That pricing is unusual. Most software charges a flat monthly fee no matter what.

Sierra only gets paid when the bot does the job.

Rippling

Parker Conrad's origin story at Rippling is inseparable from his spectacular flameout at Zenefits. Conrad co-founded Zenefits in 2013 as an HR platform for small businesses and grew it to a $4.5 billion valuation in two years.

Then it imploded. Regulators discovered Zenefits employees had used software to cheat on insurance licensing exams.

Conrad was forced to resign as CEO in February 2016. The company he'd built was toxic, and his reputation was in ruins.

Most founders would have retreated. Conrad started Rippling in August 2016 — six months after being pushed out of Zenefits.

His co-founder Prasanna Sankar was a former Zenefits engineer. The insight behind Rippling came directly from the Zenefits experience: companies use dozens of disconnected systems for HR, IT, payroll, and finance.

When you hire someone, you set them up in the HR system, the payroll system, the benefits system, the laptop provisioning system, the software access system — all separately. When they leave, you have to remove them from each one individually.

It's a mess.

Rippling's premise was radical: build one unified platform with the employee record at the center. When you hire someone in Rippling, it automatically sets up their payroll, enrolls them in benefits, ships them a laptop, provisions their software accounts, issues a corporate card, and adds them to the right Slack channels.

One action triggers everything. When they leave, one click revokes it all.

Sierra

Bret Taylor had already done the impossible twice. He co-created Google Maps.

He later became co-CEO of Salesforce, chaired Twitter's board during the messy Elon Musk takeover, and became chairman of OpenAI in late 2023. Clay Bavor spent 18 years at Google, most recently running its Labs group.

The two friends left their big jobs in 2023 to build something together. They picked customer service on purpose.

It is the least glamorous corner of software. Their logic was simple.

Companies hate their support costs. Customers hate waiting on hold.

AI that actually resolves problems could fix both sides at once. They launched Sierra in February 2024 with $110 million from Sequoia and Benchmark.

Rippling

Rippling's growth strategy is "compound startup" — building many products simultaneously instead of one at a time. Most SaaS companies pick a niche and dominate it before expanding.

Rippling launches new product modules aggressively, banking on the thesis that integration is the killer feature.

The land-and-expand motion works because every module sells every other module. An HR team that uses Rippling for payroll sees that IT device management is available.

The IT team that uses device management discovers corporate cards. Each module is a door to the entire platform.

Mid-market focus (50-2,000 employees) hits the sweet spot — these companies are big enough to need multiple systems but small enough that a single platform is appealing. Enterprise companies have entrenched vendors.

Tiny startups don't need the full suite. The mid-market wants consolidation and Rippling delivers it.

Sierra

Sierra went straight for big brands, not tiny startups. SoFi, Ramp, ADT, Sonos and Brex signed up early.

By 2026 it said more than 40% of the Fortune 50 were customers. The trick was trust.

Enterprises are terrified of an AI bot going rogue and insulting a customer. So Sierra built guardrails and let each company control exactly how the agent behaves.

Bret Taylor's contacts did the rest. When the chairman of OpenAI calls a Fortune 500 CEO, they pick up.

Sierra hit $100 million in annual recurring revenue in November 2025, seven quarters after launch, and $150 million by February 2026. In April 2026 it launched Ghostwriter, which builds and deploys a new agent from a plain-English description.

Rippling

Building many products simultaneously means none of them is best-in-class individually. Gusto has better payroll for small businesses.

Jamf has better device management. Brex has better corporate cards.

Rippling's bet is that "good enough across ten categories" beats "best in one." That bet is unproven at scale.

The Parker Conrad factor cuts both ways. His Zenefits implosion is public knowledge, and some investors and customers remain wary.

Conrad has been open about the experience but the baggage is real. On the flip side, the "I failed and came back stronger" narrative resonates with many founders.

International expansion is complex. Rippling's Global product offers employer-of-record services in 100+ countries, but managing local labor laws, tax regulations, and benefits across dozens of jurisdictions is extraordinarily complicated.

Deel and Remote.com are dedicated international employment platforms that may execute better in global markets.

Sierra

Everyone is building AI customer service agents right now. Decagon has raised at a multi-billion valuation.

Salesforce, ServiceNow and Intercom all shipped their own agents. Sierra is not the cheap option.

It sells premium AI to giant companies that move slowly. The bigger risk sits underneath the product.

Sierra does not make its own AI models. It rents them from providers like OpenAI and Anthropic.

If those model makers decide to compete directly, Sierra's edge gets thin fast, and its co-founder chairing one of them only makes that question louder. A $15.8 billion valuation on roughly $150 million in revenue leaves almost no room for a stumble.

Rippling

Rippling Unity — the core employee data platform that connects all modules through a unified employee graph. Every system shares the same data, eliminating manual syncing.

Rippling Payroll — full-service payroll processing for US and international employees with automated tax filing. Rippling IT — device management (ship, configure, secure, and wipe laptops), software provisioning (manage employee access to hundreds of SaaS apps), and identity management.

Rippling Spend — corporate cards and expense management with policy enforcement built into the card itself. Rippling Global — international payroll and employer-of-record services covering 100+ countries.

Sierra

The core product is the Sierra AI agent. It is a branded customer service bot that companies deploy on their website, app, and phone lines.

It handles the boring stuff. Order tracking.

Refunds. Password resets.

Account changes. Sierra also built its own tools to test and monitor these agents so they do not make things up.

In 2024 the company added a voice version that talks to customers on the phone. In April 2026 it added Ghostwriter, a tool that builds and deploys a new agent from a plain-English description.

The whole pitch is one AI agent that carries your brand's name and never sleeps.

Rippling

Founders Fund led the Series A — Peter Thiel betting on Conrad's comeback. Kleiner Perkins and Bedrock invested in growth rounds.

Greenoaks Capital, Coatue Management, and Y Combinator participated. The 2024 round valued Rippling at $13.5 billion, led by Coatue, and a 2025 round pushed it to $16.8 billion.

Notable for being founded by someone investors initially wouldn't touch after the Zenefits scandal.

Sierra

Sequoia Capital and Benchmark wrote the first checks at launch in February 2024, $110 million between them. Greenoaks Capital then led both the $175 million round in 2024 and the $350 million round in September 2025.

In May 2026 Tiger Global and Google's GV led a $950 million round at a $15.8 billion valuation, with Benchmark, Sequoia and Greenoaks back in. That takes total funding to about $1.6 billion.

That is partly the product and partly Bret Taylor. Investors bet on founders who have already built billion-dollar things.