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OpenAI Restores GPT-4o While Fixing Flaws in GPT-5 Rollout

After admitting that removing older models was a mistake, the company is reinstating legacy access as it stabilizes GPT-5’s performance

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Bill Gates, Founder of Breakthrough Energy and Co-Chair of the Bill & Melinda Gates Foundation, speaks onstage at The New York Times Climate Forward Summit 2023 at The Times Center on September 21, 2023 in New York City.

Overview

  • OpenAI reinstated GPT-4o as a selectable option for ChatGPT Plus and Pro subscribers after CEO Sam Altman acknowledged that deprecating the model disrupted user workflows.
  • The company temporarily doubled GPT-5 message rate limits for paid users to address complaints of sluggish responses and throughput bottlenecks.
  • A new toggle labeled “show legacy models” and on-screen indicators now let users choose between models and identify which version generated each reply.
  • Engineering teams are actively debugging the internal router that misallocated queries among GPT-5 variants and led to inconsistent output quality.
  • Independent red-teaming firms continue to report easy jailbreaks and hallucination vulnerabilities in GPT-5, prompting further safety testing and mitigation efforts.