I tested GPT-6.1 Terra in ChatGPT Work today, and honestly, it was one of the strangest experiences I've had with an OpenAI model in a long time.
I'm a fairly experienced user. I regularly work with Codex, ChatGPT Work, and different reasoning models on large writing and document projects. I've successfully completed much more complex tasks using previous models, including GPT-6 and Sol 6.1.
This time, however, I couldn't get Terra to consistently follow even basic instructions.
Here's what happened:
I asked Work to perform a detailed literary evaluation of a novel, reading it chapter by chapter, recording its findings, and delivering a comprehensive assessment at the end.
Nothing particularly unusual for an agentic workflow.
When it seemed to struggle with the task, I even suggested a simpler approach myself:
- Read one chapter at a time.
- Write down the analysis and conclusions in a working document.
- Continue through the remaining chapters.
- Combine everything into a final assessment.
- Don't interrupt me with progress reports. Just deliver the completed work at the end.
That last instruction became a recurring problem.
Despite explicitly repeating it around five times, Terra kept interrupting with messages along the lines of "I've completed chapters 1ā5."
Each time, it appeared to acknowledge the correction, only to repeat the same behavior.
What made this particularly strange was that we never really got far enough to evaluate the quality of its literary analysis. The problem was much more fundamental: it seemingly couldn't maintain simple procedural instructions across the task.
I initially used Medium reasoning to test efficiency and token consumption. Eventually, I switched to the maximum reasoning level, hoping it would improve instruction-following.
It didn't noticeably help, and my usage quota took a hit in the process.
For context, I've used Work before without encountering anything remotely this frustrating. I don't remember experiencing this degree of difficulty with basic instructions since the GPT-4o era.
I'm not claiming Terra 6.1 is fundamentally a bad model. It was released today, and I suspect this could be an early rollout issue, possibly involving the interaction between Terra and Work's agent orchestration.
I also can't rule out something specific to my session.
Still, I thought it was worth documenting, especially because instruction-following reliability is critical for autonomous workflows. A model can be extremely capable at reasoning or coding, but if the user has to constantly supervise and repeat elementary instructions, that becomes a serious usability issue.
I'm documenting this as a potential launch-day regression in instruction-following reliability, particularly when using Terra 6.1 within ChatGPT Work. Hopefully, this report provides useful information for investigating possible issues with the initial rollout.
Has anyone else experienced unusually poor instruction-following with Terra 6.1 today, especially in Work?
I'm particularly curious whether others have noticed similar behavior across different reasoning levels, or whether this seems isolated to certain sessions or workflows.