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User reports GPT 5.6 performance varies between ChatGPT and Microsoft Copilot

A user on Reddit reported that OpenAI's GPT 5.6 model performed inconsistently across different platforms. When using GPT 5.6 through Microsoft Copilot for a specific task, the model underperformed and hallucinated compared to when the same task was executed on the ChatGPT app using the same GPT 5.6 model. This led the user to question if the same version of the GPT 5.6 model is indeed available on both platforms, as the user's experience suggests a difference in performance. AI

IMPACT Highlights potential inconsistencies in model deployment across different AI-powered applications.

RANK_REASON User report on model performance differences across platforms.

Read on r/OpenAI →

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

User reports GPT 5.6 performance varies between ChatGPT and Microsoft Copilot

COVERAGE [1]

  1. r/OpenAI TIER_2 English(EN) · /u/Longjumping_Stop6269 ·

    5.6 on Microsoft copilot

    <!-- SC_OFF --><div class="md"><p>So I have access to copilot through work and it has the option to use Claude Opus and OpenAI’s GPT 5.5 and 5.6 models. I ran a task using 5.6 through the copilot app and it underperformed/hallucinated vs when I ran the same task on the ChatGPT ap…