01
Where this one gets misread
A large context window gets quoted as though it were memory or accuracy. It is neither. It is how much can be held in view for a single request, and material in view is not necessarily material the model used.
Glossary
What is a context window?
A context window is how much information a model can hold in view for one request.
Updated 21 Aug 2026
Definition
A bigger window is not memory, and the model may not use every detail in it.
02
Questions to ask
Ask for a worked example on your own material, and the evidence needed to reproduce it.
- What actually gets placed in the window for a given question?
- How is that selection made?
- What happens when the relevant material does not fit?
- Does anything persist between requests?
03
How Marella uses the term
We use “Context window” only where a product mechanism or an evaluation method backs it up, and we say when the behaviour depends on how a deployment is configured.
- Backed by a product mechanism or an evaluation method
- Deployment differences flagged
What this page does not prove
- B1A definition is not a claim about how the product performs.
- B2Vendor implementations vary.
- B3Test the term against a representative workflow.
Related pages
Test the claim on your documents
Pick a real piece of work, agree what a good answer looks like, then go through the results together.