# Surprise upset: GPT-5.5 beats Claude Fable 5 on brutal new Agents' Last Exam benchmark

> **Platform:** [SPIDITS AI](https://spidits.com/) — Real-Time AI News & Market Intelligence  
> **Published:** 2026-06-09T10:00:00.000Z  
> **Category:** RESEARCH  
> **Impact Score:** 360/100  
> **Primary Source:** [OpenAI Blog](https://openai.com/index/notion)  
> **Canonical Citation:** [https://spidits.com/timeline/surprise-upset-gpt-55-beats-claude-fable-5-on-brutal-new-agents-last-exam-benchmark](https://spidits.com/timeline/surprise-upset-gpt-55-beats-claude-fable-5-on-brutal-new-agents-last-exam-benchmark)

## Executive Summary
Researchers from the University of California, Berkeley's Center for Responsible, Decentralized Intelligence (RDI), alongside an advisory committee of over...

## Why It Matters (Strategic Analysis)
The emergence of MANGOS, comprising Meta, Anthropic, Nvidia, Google, OpenAI, and SpaceX, is poised to redefine the tech industry's ecosystem with a focus on AI and agentic companies, potentially surpassing the influence of FAANG. This shift is driven by the impending IPOs of Anthropic, OpenAI, and SpaceX. The combined market impact of these companies is expected to be significant, with potential valuations exceeding those of their predecessors.

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

## Referenced Coverage & Sources
- **[TechCrunch Venture](https://techcrunch.com/2026/06/09/how-justin-ernest-invested-nearly-500m-into-hot-startups-without-a-traditional-vc-fund)**: How Justin Ernest invested nearly $500M into hot startups without a traditional VC fund — _Instead of spending a year raising a formal venture fund, the Sabertooth VC founder used a captive network of LPs to invest in startups like Anthropic..._
- **[TechCrunch Startups](https://techcrunch.com/2026/06/09/its-not-faang-anymore-its-mangos)**: It's not FAANG anymore. It's MANGOS. — _With SpaceX, Anthropic, and OpenAI all eyeing massive public debuts, the tech industry may soon have a new class of corporate overlords - and a new acronym to..._
- **[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._

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