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Models theverge.com 22 hours ago Verified Hot

OpenAI Rolls Out GPT-5.5 Instant as New Default Model for ChatGPT

OpenAI has begun rolling out GPT-5.5 Instant to all ChatGPT users over the next few days, delivering smarter reasoning, significantly fewer hallucinations, clearer and more concise responses, and a warmer, more natural tone. The upgrade focuses on factuality, crushing hacks, and baseline intelligence improvements. Michelle Pokrass from OpenAI called it a 'pretty big step forward.'

Why it matters

This major upgrade to the most widely used AI chatbot enhances everyday productivity and reliability, pressuring rivals like Claude to accelerate their releases.

Verified signal Trade Press 3 sources Openai Gpt 5 5 Instant Rollout

Today in AI

Policy reuters.com yesterday Verified

Microsoft, Google and xAI to give US government early access to AI models for security checks

Microsoft, Google, and xAI agreed to share unreleased frontier AI models with the US Department of Commerce for pre-deployment national security evaluations, spurred by Anthropic's Mythos model exposing software vulnerabilities. This expands prior pacts with OpenAI and Anthropic, aiming to assess cyber and bio risks before public release.

Energy arstechnica.com 17 hours ago

Peter Thiel-Backed Panthalassa Raises $140M for Wave-Powered Floating AI Data Centers

Oregon startup Panthalassa secured $140M led by Peter Thiel to deploy autonomous AI data centers in the North Pacific, powered by ocean waves to bypass land/energy constraints. The offshore compute nodes aim to scale AI training amid power shortages. Backers see it opening a new 'ocean frontier' for exascale AI.

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techcrunch.com 6x · 14/20
cnbc.com 5x · 8/20
reuters.com 4x · 17/20
theverge.com 4x · 14/20
cnn.com 4x · 8/20

Quick takes

AMD Q1 data center revenue $5.8B, +57% YoY on AI accelerator demand
Chips
GPT-5.5 Instant now default in ChatGPT: 2x faster reasoning, warmer tone
Models
GPT-5.5 Instant: 81.2% AIME math (up 15.8 pts), 76 MMMU-Pro (up 6.8 pts) vs prior
Models
AMD stock +16% after Q1 $10.3B revenue beat on AI chips
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GPT-5.5 Instant now powers ChatGPT add-on for Excel/Google Sheets data tasks
AI
GPT-5.5 Instant cuts hallucinated claims by 52.5% on high-stakes prompts vs predecessor
Models
OpenAI GPT-5.5 Instant: 81.2% AIME math, 76 MMMU-Pro, now default in ChatGPT
Models
OpenAI GPT-5.5 Instant: 2x smarter, crushes hallucinations, rolls out to all ChatGPT users this week
Models

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