How Decagon Runs 90% of Its Agents on Open-Source Models

Watch on YouTube ↗  |  July 31, 2026 at 14:30  |  1:20:16  |  a16z
Speakers
Jesse Zhang — Co-founder and CEO, Decagon
Ashwin Sreenivas — Co-founder and President, Decagon

Summary

Sarah Wang and Kimberly Tan interview Decagon co-founders Jesse Zhang and Ashwin Sreenivas about building enterprise AI agents. The conversation covers Decagon's shift to open-source models, fine-tuning and evaluation, enterprise deployment, the application-layer versus frontier-lab debate, CRM's role as a system of record, and AI's impact on customer support jobs. Key market implications include durability for application-layer software, continued value in CRM systems, and a unique forward-deployed model at Palantir.

  • Decagon runs 90% of workflows on open-source models, using fine-tuned small models for production tasks.
  • Fine-tuned small models can outperform frontier models on specific tasks while being faster and cheaper.
  • The application layer is expected to remain durable even as frontier labs add capabilities.
  • Decagon's product vision expands from customer support to a proactive AI concierge.
  • CRM systems are seen as valuable systems of record that AI agents will use more.
  • Palantir's forward-deployed model is described as unique and able to close massive enterprise deals.
  • AI may automate mundane support work but not eliminate careers, with potential Jevons paradox effects.
Ideas
Jesse Zhang Co-founder and CEO, Decagon 2:46
Open-source models win at production scale.
Decagon moved 90% of its workflows to open-source models because fine-tuned smaller models can outperform frontier models on specific tasks while being faster and cheaper. Once an enterprise use case is solidified and in production at scale, open-source becomes strictly better, with frontier models reserved mainly for new or broad exploratory work.
Jesse Zhang Co-founder and CEO, Decagon 19:23
Application layer remains durable with AGI.
The application layer is durable because frontier labs are not the last startups. Even with AGI, agents will need software systems to store work, pull information, and encode business logic, so companies with deep integrations, workflows, and tooling can thrive alongside foundation model labs.
Ashwin Sreenivas Co-founder and President, Decagon 26:10
Palantir's forward-deployed model uniquely closes huge deals.
Palantir's forward-deployed engineering model is unique and can be worthwhile because very few companies can close massive enterprise deals from the outset. Unlike generic AI consultancies, Palantir's approach is not merely a glorified consulting trap.
Jesse Zhang Co-founder and CEO, Decagon 50:47
AI agents become business front door.
Decagon's long-term vision is an AI concierge that acts as the front door of a business, handling every reactive and proactive customer interaction. As models get better at following broad instructions, this expands from customer support into sales qualification and operational workflows.
Ashwin Sreenivas Co-founder and President, Decagon 66:06
CRM systems stay valuable as data source.
CRM systems remain valuable as systems of record and sources of truth for customer data. Even if AI agents use APIs instead of graphical interfaces, they will ping CRMs more often, so CRM software such as Salesforce can do quite well.
Up Next

This a16z video, published July 31, 2026, features Jesse Zhang, Ashwin Sreenivas discussing Open-source AI models, AI Application Software, PLTR, AI-SECTOR, CRM. 5 trade ideas extracted by AI with direction and confidence scoring.

Speakers: Jesse Zhang, Ashwin Sreenivas  · Tickers: Open-source AI models, AI Application Software, PLTR, AI-SECTOR, CRM