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ChatGPT users report model automatically switching to GPT-6

By PulseAugur Editorial · [1 sources] ·

Users of ChatGPT have reported that the platform intentionally switches the selected model to GPT-6, even when a different model like GPT-5.6 High is explicitly chosen. This behavior occurs when creating new chats, where the model selection appears to be GPT-5.6 High, but the underlying request is rerouted to GPT-6 at a medium thinking level. The exact nature of GPT-6 remains unknown, with speculation suggesting it might be related to the Luna model. AI

IMPACT Potential user confusion and unexpected performance characteristics due to automatic model switching in ChatGPT.

RANK_REASON User report of unexpected model behavior in a widely used product.

Read on r/OpenAI →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

ChatGPT users report model automatically switching to GPT-6

How we ranked this

Signal score
10 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket
Tool
User report of unexpected model behavior in a widely used product.
Source corroboration
Single-source cluster
Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
Topics
product
Editorial topic classification. Feeds into how the story surfaces on /topic/<slug> hub pages and into the per-entity coverage mix.
AI-industry relevance
High
Clearly on-topic for AI-industry coverage.
Story freshness
Breaking (< 6h)
Fresh story with cross-source coverage still developing. Ranking may shift as more sources report.

Full methodology in our editorial standards.

COVERAGE [1]

  1. r/OpenAI TIER_2 English(EN) · /u/DepositameAMiBCP ·

    PSA: ChatGPT intentionally swaps selected model from 5.6 to 6

    <table> <tr><td> <a href="https://www.reddit.com/r/OpenAI/comments/1xa60rq/psa_chatgpt_intentionally_swaps_selected_model/"> <img alt="PSA: ChatGPT intentionally swaps selected model from 5.6 to 6" src="https://preview.redd.it/01qfk0fb3hwh1.png?width=140&amp;height=53&amp;auto=we…

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