OpenAI sidesteps Nvidia with unusually fast coding model on plate-sized chips
OpenAI’s new GPT‑5.3‑Codex‑Spark is 15 times faster at coding than its predecessor.
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Benj Edwards
Senior AI Reporter
benj.edwards@arstechnica.com
Benj Edwards is Ars Technica's Senior AI Reporter, having founded the site's AI beat in 2022 to cover the emerging field of generative AI. For over 20 years, he has written about technology and tech history for sites such as The Atlantic, Fast Company, PCMag, PCWorld, Macworld, How-To Geek, and Wired. His work in AI reporting includes breaking stories on prompt injections, AI copyright issues, and ethical concerns surrounding AI training data. In 2005, he created Vintage Computing and Gaming, a blog that pioneered tech history coverage online. He also hosted The Culture of Tech podcast and contributes to the Retronauts podcast. In his free time, he writes and records music, collects vintage computers, and enjoys nature. He lives in Raleigh, NC. Bluesky: @benjedwards.com X/Twitter: @benjedwards
Recent stories by
Benj Edwards
Attackers prompted Gemini over 100,000 times while trying to clone it, Google says
Distillation technique lets copycats mimic Gemini at a fraction of the development cost.
Benj Edwards
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Byte magazine artist Robert Tinney, who illustrated the birth of PCs, dies at 78
He became one of the first to visualize personal computing by painting vivid cover art.
Benj Edwards
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OpenAI researcher quits over ChatGPT ads, warns of “Facebook” path
Zoë Hitzig resigned on the same day OpenAI began testing ads in its chatbot.
Benj Edwards
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Sixteen Claude AI agents working together created a new C compiler
The $20,000 experiment compiled a Linux kernel but needed deep human management.
Benj Edwards
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AI companies want you to stop chatting with bots and start managing them
Claude Opus 4.6 and OpenAI Frontier pitch a future of supervising AI agents.
Benj Edwards
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142
OpenAI is hoppin’ mad about Anthropic’s new Super Bowl TV ads
Sam Altman calls AI competitor “dishonest” and “authoritarian” in lengthy post on X.
Benj Edwards
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Should AI chatbots have ads? Anthropic says no.
ChatGPT competitor comes out swinging with Super Bowl ad mocking AI product pitches.
Benj Edwards
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Most Read
Nvidia’s $100 billion OpenAI deal has seemingly vanished
Two AI giants shake market confidence after investment fails to materialize.
Benj Edwards
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The rise of Moltbook suggests viral AI prompts may be the next big security threat
We don’t need self-replicating AI models to have problems, just self-replicating prompts.
Benj Edwards
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AI agents now have their own Reddit-style social network, and it’s getting weird fast
Moltbook lets 32,000 AI bots trade jokes, tips, and complaints about humans.
Benj Edwards
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Developers say AI coding tools work—and that’s precisely what worries them
Ars spoke to several software devs about AI and found enthusiasm tempered by unease.
Benj Edwards
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New OpenAI tool renews fears that “AI slop” will overwhelm scientific research
New “Prism” workspace launches just as studies show AI-assisted papers are flooding journals with diminished quality.
Benj Edwards
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Does Anthropic believe its AI is conscious, or is that just what it wants Claude to think?
We have no proof that AI models suffer, but Anthropic acts like they might for training purposes.
Benj Edwards
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Report: China approves import of high-end Nvidia AI chips after weeks of uncertainty
Over 400,000 H200 chips coming to tech giants as China tries to balance tech needs with self-reliance.
Benj Edwards
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Users flock to open source Moltbot for always-on AI, despite major risks
The open source “Jarvis” chats via WhatsApp but requires access to your files and accounts.
Benj Edwards
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75
OpenAI spills technical details about how its AI coding agent works
Unusually detailed post explains how OpenAI handles the Codex agent loop.
Benj Edwards
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61
eBay bans illicit automated shopping amid rapid rise of AI agents
New policy requires “buy for me” AI tools and chatbots to obtain permission before accessing the platform.
Benj Edwards
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62
Wikipedia volunteers spent years cataloging AI tells. Now there’s a plugin to avoid them.
The web’s best guide to spotting AI writing has become a manual for hiding it.
Benj Edwards
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10 things I learned from burning myself out with AI coding agents
Opinion: As software power tools, AI agents may make people busier than ever before.
Benj Edwards
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OpenAI to test ads in ChatGPT as it burns through billions
Ads coming to free tier and new $8/month ChatGPT Go plan in US.
Benj Edwards
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TSMC says AI demand is “endless” after record Q4 earnings
Amid fears of bubble, world’s top chipmaker TSMC says customers just keep asking for more.
Benj Edwards
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184
Wikipedia signs major AI firms to new priority data access deals
Wikimedia Enterprise signs Microsoft, Meta, Amazon, Perplexity, and Mistral to API access deals.
Benj Edwards
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Bandcamp bans purely AI-generated music from its platform
Indie music store says it wants fans to have confidence music was largely made by humans.
Benj Edwards
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149
Hegseth wants to integrate Musk’s Grok AI into military networks this month
US defense secretary announces plans for integration despite recent controversies.
Benj Edwards
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122
Microsoft vows to cover full power costs for energy-hungry AI data centers
Company responds to community concerns over electricity bills and water use.
Benj Edwards
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92
Google removes some AI health summaries after investigation finds “dangerous” flaws
AI Overviews provided false liver test information experts called alarming.
Benj Edwards
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ChatGPT Health lets you connect medical records to an AI that makes things up
New feature will allow users to link medical and wellness records to AI chatbot.
Benj Edwards
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164
Stewart Cheifet, PBS host who chronicled the PC revolution, dies at 87
Cheifet produced more than 400 episodes of TV tracing the rise of personal computing.
Benj Edwards
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55
From prophet to product: How AI came back down to earth in 2025
In a year where lofty promises collided with inconvenient research, would-be oracles became software tools.
Benj Edwards
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208
How AI coding agents work—and what to remember if you use them
From compression tricks to multi-agent teamwork, here’s what makes them tick.
Benj Edwards
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170
OpenAI’s new ChatGPT image generator makes faking photos easy
New GPT Image 1.5 allows more detailed conversational image editing, for better or worse.
Benj Edwards
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114
Merriam-Webster’s word of the year delivers a dismissive verdict on junk AI content
Dictionary codifies the term that took hold in 2024 for low-quality AI-generated content.
Benj Edwards
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124
OpenAI built an AI coding agent and uses it to improve the agent itself
“The vast majority of Codex is built by Codex,” OpenAI told us about its new AI coding agent writing code.
Benj Edwards
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236
OpenAI releases GPT-5.2 after “code red” Google threat alert
Company claims new AI model tops Gemini and matches humans on 70% of work tasks.
Benj Edwards
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Disney invests $1 billion in OpenAI, licenses 200 characters for AI video app Sora
Three-year deal lets users create AI videos of Mickey Mouse, Darth Vader, and more.
Benj Edwards
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