Can more context make AI worse? I ran 720 tests to find out

 

Can a bigger context window make an AI less reliable?

We tested how long context affects LLM performance across Mistral Nemo, Llama 3.1 8B, and GPT-4.1 Nano. Using accounting-style tasks with 30K and 60K extra tokens, we separated two skills: retrieving the right facts and using those facts to complete the task.

The key finding: a model can retrieve the correct rules but still fail the final task when its context gets larger.

This video covers:

- Why long context can hurt LLM reasoning

- The “lost in the middle” problem

- Our 720-result reproduction experiment

- How to evaluate AI agents and prompts in production

- A practical retrieval-then-execution workflow for more reliable AI systems

Before adding more files, rules, emails, and logs to your AI prompt, test whether that context actually improves results.

https://www.avisantoso.com/research/2026-08-can-too-much-context-make-ai-dumber

#AI #LLM #ContextWindow #AIAgents #PromptEngineering #AIEvals

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