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AI is moving from chat to action.
In this episode of Big Ideas 2026, we unpack three shifts shaping what comes next for AI products. The change is not just smarter models, but software itself taking on a new form.
You will hear from Marc Andrusko on the shift from prompting to execution, Stephanie Zhang on what it means to build machine-legible software, and Olivia Moore on why voice agents are becoming practical, deployable systems rather than demos.
Together, these ideas tell a single story. Interfaces shift from chat to action, design shifts from human-first to agent-readable, and work shifts to agentic execution. AI stops being something you ask, and becomes something that does.
Timecodes:
0:00 Introduction: The Future of AI Interfaces
0:30 The Death of the Prompt Box
1:09 AI as the Ultimate Employee
2:28 Proactive AI in CRM and Workflows
4:09 Designing for Agents, Not Humans
5:28 Machine Legibility and Content Creation
8:48 The Rise of AI Voice Agents
9:25 Voice AI in Healthcare, Finance, and Recruiting
11:01 Challenges and Opportunities in Voice AI
12:32 Consumer Voice AI and Wellness
13:01 Building with Voice AI: Tools and Platforms
Resources:
Follow Marc Andrusko on X: https://twitter.com/mandrusko1
Follow Stephanie Zhang on X: https://twitter.com/steph_zhang
Follow Olivia Moore on X: https://twitter.com/omooretweets
Read more of our 2026 Big Ideas
Part 1: https://a16z.com/newsletter/big-ideas-2026-part-1
Part 2: https://a16z.com/newsletter/big-ideas-2026-part-2
Part 3: https://a16z.com/newsletter/big-ideas-2026-part-3
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Please note that the content here is for informational purposes only; should NOT be taken as legal, business, tax, or investment advice or be used to evaluate any investment or security; and is not directed at any investors or potential investors in any a16z fund. a16z and its affiliates may maintain investments in the companies discussed. For more details, please see a16z.com/disclosures.
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