Consulting had a year of huge change in 2025. Here's how the Big Four firms performed this year.

Tech Insider : Business, Technology
Deloitte logo
Deloitte recorded 4.8% annual revenue growth in its most recent financial year.

Jack Taylor/Getty Images

Social media is giving us a glimpse inside some lavish office holiday parties

Tech Insider : Business, Style
SpaceX TikTok and KPMG TikTok
TikTok is taking people inside big corporate holiday parties.

TikTok

From McKinsey to PwC, here's how elite consulting firms are racing to hire engineers — and train everyone else in AI

Tech Insider : Business, Style, Technology
Photo collage featuring the PwC and McKinsey & Company logos, a laptop displaying an AI interface, and people sitting and waiting for a job interview.

Getty Images; Alyssa Powell/BI

AI is letting some workers quietly slack off — until their bosses catch on

Tech Insider : Business, Technology
Young American man visits China.
Software engineer Noah Olsen says he used AI to complete half of his workload -- without telling his boss.

Noah Olsen

The new AI warnings popping up in SEC filings

Tech Insider : Business, Technology
SEC building

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See inside KPMG's giant new NYC headquarters, which was designed based on employee input

Tech Insider : Business, Environment, Technology
KPMG
Across KPMG's offices nationwide, employees said they prefer round tables over all else.

Emily Louick Photography and Entropy Film Works Inc

KPMG wants junior consultants to ditch the grunt work and hand it over to teams of AI agents

Tech Insider : Business
KPMG

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I left my corporate job to build a padel club. It wasn't easy, but my passion convinced wealthy players to invest.

Tech Insider : Business, Sports
Davy Sanh
Davy Sanh traded corporate life for padel courts and turned his love for the sport into a business backed by wealthy players.

Lee Chong Ming/Business Insider

Consulting is changing. Here are 4 unlikely ways the Big Four are reinventing themselves to seem less 'stodgy.'

Tech Insider : Business, Technology
PwC office
The Big Four are expanding into new areas to put them closer to tech innovators and move away from what one expert called their "stodgy audit reputation."

: Dukas/Universal Images Group via Getty Images

Inside KPMG's lavish Florida 'Lakehouse,' where interns get drumming parades, soft serve ice cream, and mini-golf

Tech Insider : Business, Sports, Style
KPMG Lakehouse
KPMG's 'Lakehouse' facility in Florida.

Polly Thompson

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