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LangChain Cast

12/18/24

@ LangChain

We built a tool to streamline the process of iterating on our prompting layer, allowing us to run experiments and assess the impact of even trivial changes on performance and user engagement.

Video

How We Built It: Character.AI - Fireside Chat with Harrison Chase & James Groeneveld

@ LangChain

How We Built It: Character.AI - Fireside Chat with Harrison Chase & James Groeneveld

12/18/24

Related Takeaways

Y Combinator Cast

02/09/24

@ Y Combinator

Developer tools for prompt engineering are gaining traction, allowing users to chain prompts and test their effectiveness, which is appealing to college students experimenting with AI.

Jake Heller

10/04/24

@ Y Combinator

We adopted a test-driven development approach for our AI prompts, which allowed us to refine the system to achieve high accuracy in responses.

LangChain Cast

12/18/24

@ LangChain

The tool we developed, called Prompt Poets, allows us to template our prompts using YAML and Ginger, enabling us to manage runtime variables and control flow effectively.

Katie Dill

10/16/24

@ Y Combinator

Iterative feedback cycles with a diverse range of users help reveal insights that improve product execution and user experience.

Dan Siroker

10/26/13

@ Y Combinator

After a month, we pivoted to create products we wished we had, leading to the development of Optimizely, which simplifies A/B testing for users without technical resources.

Lin Qiao

05/19/25

@ Sequoia Capital

We have developed a self-serve platform that allows developers to easily tune AI applications for speed and quality, facilitating rapid scaling and experimentation.

Zack Witten

09/06/24

@ Anthropic

The engineering aspect of prompt engineering comes from the ability to experiment and iterate on prompts without interference, allowing for systematic improvements.

Y Combinator Cast

09/22/23

@ Y Combinator

An iterative approach is essential in working with AI; continuously debugging and refining prompts can lead to more reliable outcomes.

Y Combinator Cast

05/23/25

@ Y Combinator

The interaction model for building AI tools should be iterative, where users and developers collaborate to refine system prompts.