NewsPublished 2 Jun 2026

OpenAI upgrades GPT-5.5, as it plans to retire legacy ChatGPT models

Source Bleeping Computer

Description

OpenAI says it's rolling out a new update that improves the existing GPT-5.5 Instant model, and this move comes ahead of the scheduled retirement of multiple legacy models, including o3. [...]

Impact

No security impact or exploit activity is reported. The update focuses on model performance improvements and feature additions. Retiring legacy models may affect users relying on those specific versions but does not present a security risk.

Defensive guidance

No mitigation or remediation is required as this is not a security vulnerability. Users should transition to the updated GPT-5.5 Instant model and adapt to the retirement schedule of legacy models as communicated by OpenAI.

Summary

The reported update involves OpenAI enhancing the GPT-5.5 Instant model with improvements in response quality and style, alongside the planned retirement of older legacy ChatGPT models including o3 and GPT-4.5. Additionally, OpenAI is integrating a job search feature into ChatGPT, enabling users to find relevant job listings and tailor resumes. The information does not describe any security vulnerability, exploit, or threat but rather product improvements and model lifecycle management.

References

bleepingcomputer.com/news/artificial-intelligence/openai-upgrades-gpt-55-as-it-plans-to-retire-legacy-chatgpt-models/ (opens in a new tab)

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Description

AI analysisMachine-generated, updated 2 Jun 2026, 22:48 UTC

References

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