CodeSignal launches Cosmo, an AI tutor app for job skills

CodeSignal has launched Cosmo, a mobile AI tutoring app that transforms micro-learning sessions into career-ready skills across generative AI, coding, marketing, finance, and leadership. The San Francisco-based company, known for technical assessments at Netflix, Meta, and Capital One, positions Cosmo as the “Duolingo for job skills” with over 300 bite-sized courses delivered through an interactive AI tutor interface.

The big picture: This launch represents a strategic pivot for CodeSignal, which spent six years building hiring assessment tools before returning to its original educational mission, now armed with data about which skills employers actually value.

Why this matters: Organizations face massive skills gaps as 76% of developers now use or plan to use AI tools, yet most workers lack practical knowledge to harness these technologies effectively, while traditional corporate training can cost $20,000 to $40,000 per person.

How it works: Cosmo delivers “practice-first learning” where users immediately engage with realistic workplace scenarios rather than consuming passive video content.
• The AI tutor guides learners through conversational exchanges that adapt to individual knowledge levels and learning pace.
• Each lesson follows structured curriculum but allows interruptions for real-time AI-generated explanations.
• Users can practice skills during spare minutes through mobile-optimized micro-courses.

Key focus areas: Nearly one-third of Cosmo’s content targets generative AI applications, addressing what CodeSignal identifies as the most critical skills gap in today’s market.
• Role-specific AI training paths cover sales, marketing, engineering, healthcare, and other specialties.
• Content spans from basic GenAI understanding to advanced prompting techniques and landscape analysis.
• Additional courses cover coding, marketing, finance, and leadership skills.

What they’re saying: “Cosmo is like having an AI tutor in your pocket that can teach you anything from GenAI to coding to marketing to finance to leadership, and it does it through practice,” said Tigran Sloyan, CodeSignal’s co-founder and CEO.
• “Instead of watching a video or reading about something, you immediately start practicing.”
• “I don’t believe we’re going to reach a point where humans are no longer needed in the workforce. I think it’s going to be the opposite. We’re going to need more humans, because what an individual human can do in the age of AI is going to be so much bigger than what we could do before.”

Pricing and availability: The app launches free on iOS with premium subscriptions at $24.99 monthly or $149.99 annually, unlocking unlimited practice sessions and faster progression.
• Android availability follows on August 28.
• Enterprise customers with existing CodeSignal learning platform access receive Cosmo as part of their subscriptions.
• CodeSignal’s broader learning platform has attracted one million users in less than a year, with usage doubling every two months.

Competitive advantage: CodeSignal’s foundation in hiring intelligence provides unique market positioning over traditional educational publishers.
• The company’s assessment data from over 3,000 companies reveals which skills actually influence hiring decisions.
• “We know exactly what companies are looking for,” Sloyan explained. “Without that, I feel like you’re shooting in the dark when you’re trying to prepare people for what is going to help them get that job.”

Corporate training challenges: Traditional enterprise learning suffers from poor engagement and retention, with utilization rates frequently in single digits despite significant investments.
• “The number one problem enterprise learning products have is retention. Organizations buy, deploy, and their utilization is like single digits, and that’s horrible,” Sloyan noted.
• The mobile-first approach acknowledges how working professionals actually consume educational content during commutes, breaks, and downtime.

Broader context: The launch comes as CodeSignal continues expanding across the skills spectrum with AI-Assisted Coding Assessments and Interviewer Agents that automate technical interviews.
• The company recently partnered with Amazon Web Services to provide free generative AI training to over 30,000 students globally.
• Early beta testers describe Cosmo as “Duolingo for job skills” and praise its mobile learning convenience.