Merrill Lutsky, co-founder and CEO of Graphite, discusses their evolution from stack diff workflows to Diamond, an AI code review agent that just helped secure their $50M Series B. He shares insights on building reliable AI review systems, why over-generating and pruning comments works better than single responses, and the shift from RAG to agentic code browsing. Merrill offers a provocative vision where developers define requirements and AI agents build the code, potentially eliminating traditional IDE coding. This episode provides valuable perspectives on how AI is fundamentally reshaping software development workflows and engineering roles.

Chapters:
00:00 - Introduction and Graphite overview
01:58 - Evolution from stack diffs to AI review
07:39 - Diamond: The AI code reviewer explained
10:13 - Human vs AI review: Finding the balance
11:44 - Engineering challenges of reliable AI review
17:38 - Over-generate and prune: A winning strategy
24:49 - From RAG to code browser agents
28:12 - The bitter lesson of AI engineering
30:48 - The future of software engineering
37:33 - Is AI over or under-hyped?

This week Raza is joined by Amit Jain, CEO and co-founder of Luma AI, to explore why the future of artificial intelligence lies beyond language. Amit shares Luma’s bold mission to build world models through multimodal training and why video is the most overlooked and critical data source in AI today.

Chapters:
00:00 - Introduction
03:40 - Competing with Big AI Labs: Language vs. Multimodality
08:09 - Joint Training and Why Current Multimodal Models Fall Short
11:01 - Language is Discrete, the World is Continuous
14:36 - Do These Models Have World Models?
18:18 - Planning, Counterfactuals, and Causal Reasoning in AI
22:08 - Capabilities of Ray 2 and Real-World Use Cases
26:14 - Rethinking Video Length and Creative Workflows
29:18 - Solving Coherence Across Shots and Characters
30:00 - When Will AI Create a Feature-Length Film?
31:27 - What You Can Build with Luma’s API Today
35:49 - Overlooked Ideas and Noise in the AI Industry
38:34 - Why Video is the Missing Link in AI

Eric Simons discusses the meteoric rise of Bolt.new, an AI-powered web app builder that went from zero to $40 million ARR in just five months. He shares insights on how they built an AI agent capable of creating full-stack web applications from simple prompts, the challenges of rapid growth, and the future of AI in software development. From nearly shutting down the company to becoming one of the fastest-growing AI products in history, Eric offers valuable lessons for anyone building in the AI space.

Chapters:
00:00 - Introduction and Bolt.new overview
06:05 - The journey from near-shutdown to rapid growth
13:28 - Challenges of explosive growth and scaling
18:50 - Technical deep dive: Building Bolt.new
26:37 - Debugging and improving AI-generated code
32:09 - Future directions and enterprise adoption
34:11 - Advice for building AI applications
37:03 - The concept of "vibe revenue" in AI startups
39:39 - Is AI over or under-hyped?

------------------------------------------------------------------------------------------------------------------------------------------------
Humanloop is the LLM evals platform for enterprises. We give you the tools that top teams use to ship and scale AI with confidence. To find out more go to humanloop.com