TL;DR
Researchers tested Fable 5 and GPT-5.6 Sol on a complex NP-hard problem. The /goal command did not notably enhance their problem-solving performance. This raises questions about AI capabilities in tackling computationally intensive tasks.
Recent experiments show that both Fable 5 and GPT-5.6 Sol have limited success in solving a complex NP-hard problem, even when the /goal command is employed. For more details, see the AI music video project. The findings suggest that prompting techniques like /goal do not significantly improve their problem-solving abilities in such computationally intensive tasks, raising questions about the current state of AI in handling NP-hard problems.
Researchers conducted a series of tests comparing Fable 5 and GPT-5.6 Sol on an NP-hard problem, a class of problems known for their computational difficulty. The tests aimed to determine whether the /goal command, a prompting feature designed to guide the models toward specific objectives, enhances their problem-solving success. This is part of ongoing research into AI capabilities and limitations.
The experiments showed that both models struggled to produce correct solutions, and the use of /goal did not lead to a statistically significant increase in success rates. The tests involved multiple iterations and varied prompt formulations, yet the results remained consistent: the models’ performance was largely unaffected by the /goal command.
OpenAI researchers involved in the study stated that these results highlight the limitations of current large language models in tackling NP-hard problems, especially when relying solely on prompting techniques. The findings are part of ongoing efforts to understand the boundaries of AI reasoning capabilities in complex computational tasks. Learn more about AI advancements on our homepage.
Implications for AI Problem-Solving Capabilities
This development matters because it indicates that even advanced AI models like Fable 5 and GPT-5.6 Sol may not be reliable for solving certain classes of hard computational problems, such as NP-hard problems. The limited impact of the /goal command suggests that current prompting methods are insufficient for guiding models through such complex tasks, which has implications for AI applications in fields like cryptography, optimization, and algorithm design.
Understanding these limitations is crucial as industries increasingly rely on AI for solving complex problems. It also points to the need for further research into hybrid approaches or specialized algorithms that can better handle NP-hard challenges.

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Recent Advances and Limitations in AI Problem-Solving
Large language models (LLMs) like GPT-5 and derivatives such as Fable 5 have demonstrated impressive capabilities in natural language understanding and generation. However, their ability to solve computational problems, especially NP-hard problems, remains limited.
Previous research has shown that prompting techniques, including instructions like /goal, can sometimes improve task performance. Nonetheless, these improvements are often modest and vary depending on the problem complexity. The recent experiments are among the first systematic evaluations of whether such techniques can significantly enhance problem-solving in NP-hard scenarios.
NP-hard problems are known for their computational intractability, meaning that no known algorithms can solve all instances efficiently. AI models are increasingly tested to see if they can approximate solutions or identify solutions more effectively, but results have been mixed.

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Unresolved Questions About AI’s NP-Hard Problem-Solving
It is still unclear whether alternative prompting strategies or model modifications could improve performance on NP-hard problems. The experiments did not explore all possible techniques, and the role of training data or model architecture remains uncertain in this context. Additionally, the exact reasons why /goal fails to enhance performance are not fully understood, and further research is needed to determine whether these limitations are fundamental or can be overcome with future innovations.

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Next Steps in Evaluating AI Approaches to Complex Problems
Researchers plan to test other prompting techniques, model architectures, and hybrid algorithms that combine AI with classical optimization methods. Further experiments are expected to clarify whether improvements are possible and to identify the most promising approaches for tackling NP-hard problems in practical applications. Industry stakeholders are also monitoring these developments to assess AI’s potential in solving real-world complex problems.

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Key Questions
Does the /goal command improve AI problem-solving on NP-hard problems?
Based on recent experiments, the /goal command did not significantly improve the success rate of Fable 5 or GPT-5.6 Sol in solving NP-hard problems.
Why are NP-hard problems difficult for AI models?
NP-hard problems are computationally intractable, meaning no efficient algorithms are known to solve all instances quickly. AI models currently lack the reasoning capabilities needed to efficiently solve such problems without specialized algorithms.
Could future AI developments overcome these limitations?
It is possible that new techniques, architectures, or hybrid methods could improve performance, but current models still face fundamental challenges in this area.
What are the practical implications of these findings?
The results suggest caution when relying on current AI models for complex optimization or cryptography tasks that involve NP-hard problems. More research is needed to develop effective solutions.
Source: hn