GPT-5 rollout updates: *We are going to double GPT-5 rate limits for ChatGPT Plus users as we finish rollout. *We will let Plus users choose to continue to use 4o. We will watch usage as we think about how long to offer legacy models for. *GPT-5 will seem smarter starting
MARKET TRENDS
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GPT-5 Launch: Cost, Speed, Context Impact for Leaders
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GPT-5 launched yesterday. I had early access and here’s what stood out to me, and how I’d be thinking about it as a business leader right now. Three words: Cost. Speed. Context. Cost → Cheaper than o3, way cheaper if you use Nano/Mini. I do not recommend slashing budgets.
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Sam Altman Announces GPT-4o Return for Plus Subscribers
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Sam Altman just announced a change in policy, GPT-4o will be coming back, at least for Plus ($20/month) users
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Evaluating GPT-5 predictions accuracy and model performance
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Now that GPT-5 is out, how do you think I did? Were my predictions for the model correct?
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OpenAI retires GPT models without warning breaking user workflows
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Suddenly retiring every other model without warning was a weird move by OpenAI. … and they did it without explaining how switching models worked or even details of various GPT-5 models …and they did it when everyone has built workflows around older models, breaking them all.
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GPT-5 Key Characteristics and Pricing Analysis
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Sent out the latest edition of my newsletter, aka everything I've written on my blog in the past 7 days copied-and-pasted into an email https://
simonw.substack.com/p/gpt-5-key-ch
aracteristics-pricing
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OpenAI Removes GPT-4o Access Alongside GPT-5 Launch
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One of the surprises for me from the GPT-5 launch yesterday is how OpenAI removed access to older models (like GPT-4o) for most ChatGPT users at the same time as they rolled out the new model. I wrote about how that's been playing out here:
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GPT-5 Pro outperforms competitors in advanced simulations
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GPT-5 Pro is genuinely a top tier model, it is the best. I know some GPT-5 reactions have been mixed (including from me), but OpenAI has made great strides with Pro. I have made 12 simulations that no other model would match, not from OpenAI, Google, xAI or Anthropic. All of them… pic.twitter.com/vzFKUttbeW
— Peter Gostev (@petergostev) 8 août 2025GPT-5 Pro is genuinely a top tier model, it is the best. I know some GPT-5 reactions have been mixed (including from me), but OpenAI has made great strides with Pro. I have made 12 simulations that no other model would match, not from OpenAI, Google, xAI or Anthropic. All of them
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10 Emerging Technologies 2025 Set to Revolutionize Industry
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According to the @Wef
, these 10 emerging technologies of 2025 could revolutionize industry and society. However, only a few will overcome challenges and achieve commercial success. Source @VisualCap Link https://
bit.ly/4fEGyEF via @antgrasso #EmergingTech #Innovation -
GPT-5 Integration Challenges: Agent Harness Optimization Delays
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A lot of folks who are having a bad experience are using GPT-5 in agent harnesses that aren't yet optimized for it. For every new model release, there's a time lag between release + when companies that integrate the model have it truly working well. Agent companies rush to