# How engineers at Nextdoor use Codex to build without limits

> **Platform:** [SPIDITS AI](https://spidits.com/) — Real-Time AI News & Market Intelligence  
> **Published:** 2026-06-09T12:00:00.000Z  
> **Category:** PRODUCT_LAUNCH  
> **Impact Score:** 220/100  
> **Primary Source:** [OpenAI Blog](https://openai.com/index/notion)  
> **Canonical Citation:** [https://spidits.com/timeline/how-engineers-at-nextdoor-use-codex-to-build-without-limits](https://spidits.com/timeline/how-engineers-at-nextdoor-use-codex-to-build-without-limits)

## Executive Summary
How engineers at Nextdoor use Codex with GPT-5.5 to investigate hard-to-reproduce issues, build across platforms, and focus on product outcomes.

## Key Entities & Companies
- **OpenAI**

## Referenced Coverage & Sources
- **[arXiv AI](https://arxiv.org/abs/2606.11445)**: Forecasting Future Behavior as a Learning Task — _Trust in an AI system is often anchored by explanations of how it works, which one then uses to forecast its behavior on new inputs. For large reasoning..._
- **[arXiv AI](https://arxiv.org/abs/2606.11724)**: Mind the Perspective: Let's Reason Recursively for Theory of Mind — _Theory of Mind (ToM) reasoning requires inferring agents' beliefs from partial and asymmetric observations, which remains an open challenge for LLMs. Existing..._
- **[OpenAI Blog](https://openai.com/index/notion)**: What Codex unlocks for Notion — _How Notion uses Codex to one-shot specs, build AI Voice Input for the web, and multiply engineering power across small teams._

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*Synthesized by SPIDITS AI Market Intelligence Desk. Track live AI news, model releases, and funding: [https://spidits.com](https://spidits.com)*