Summary of OpenAI DevDay 2024 in London

The most interesting part was the discussion with other participants. It was good to hear what tools are common in production from so many companies.

In fact, the vast majority of developers use tools from langchain-ai:

• Langchain - "we tried it once, we rejected it, we tried again, now we use it"
• Langgraph (which was a pleasant surprise for me)

Less frequently, but still relatively common: DsPy (a surprise for me), Langsmith.

Among the big no-showers in production: Perplexity API (a huge surprise given the speed and price).

As for providers: OpenAI (duh...), Claude 3.5-sonnet mentioned basically in one breath with code generation, Google Gemini chosen mainly for extreme context size.