# OpenAI's Vaibhav Srivastav discusses getting the most out of Codex at DevDay London

> Original title: Was a ton of fun catching up with John at DevDay in London!

- Source: Vaibhav Srivastav
- Published: 2026-11-05T15:56:58.000Z
- Bad Influence: https://badinfluence.news/items/pc87spb9xs90citorjb1jzqqj
- Original: https://x.com/reach_vb/status/2118372004613255357

## Summary

Vaibhav Srivastav of OpenAI spoke with John Crickett at DevDay Exchange London about how startups can get the most out of Codex. The conversation covered long-running AI agents, context management, choosing models, and building faster, and John Crickett notes that Codex ran autonomously for 1,000 hours.

## Post

Was a ton of fun catching up with John at DevDay in London!

We spoke about a good chunk of things around startups, models and what does OpenAI for Developers entails 

Enjoy! 🤙🏻

## Quoted post @johncrickett

> I sat down with VB (@reach_vb) from @OpenAI at DevDays Exchange London earlier this week. We talked about how startups can get the most out of Codex.
> 
> Covering long-running AI agents, context management, choosing the right models, and practical tips for building faster.
> 
> And how Codex ran autonomously for 1,000 hours!

https://x.com/johncrickett/status/2118335025292914985