A long-document summary omits key passages: was the input truncated or the extraction request unclear?
When a long summary omits important material, first confirm that the complete source reached the model, then check whether the task explicitly identifies facts that must be retained. Truncation and failure to extract a point are different problems; adding “read carefully” does not distinguish them.
Start troubleshooting here
When a long summary omits important material, first confirm that the complete source reached the model, then check whether the task explicitly identifies facts that must be retained. Truncation and failure to extract a point are different problems; adding “read carefully” does not distinguish them. Match the summary against source-located checks to identify failures in reading, assembly or summarization.
Confirm the uploaded content and actual input range
Use this process when a report summary covers only the beginning, loses attachment restrictions or broadens the original conclusion. Save both the source file and the final text sent to the model, checking page and paragraph ranges. Sample extraction from scans and complex tables: a successful upload does not prove the model received a complete, usable text.
Locate the missing statement and inspect the task
Locate the missing key sentence in the final input and check that length limits or cleanup did not remove it. If present, determine whether a request for a thematic summary made specific restrictions seem optional. Give attachments distinct names so identically titled sections do not lose their provenance during assembly.
Extract by source location before merging summaries
List a small set of required facts with source locations and ask the summary to cover them. For very long material, extract facts by section before merging conclusions, retaining source identifiers at every merge. Do not change chunking and prompts together; validate extraction of the missing passage first, then check that the later merge does not lose it again.
Verify conditions and cross-section relationships
Check more than keyword presence: match conditions and negations to the original and ensure exceptions have not become general conclusions. Test a differently structured document to avoid tuning only to one document's headings. Important statements in the finished summary should trace to their sources rather than merely forming a longer paraphrase.
This page benchmarks no model's long-document accuracy and does not equate a maximum context figure with complete understanding. If an interface hides final input, you can check visible evidence and citations but cannot locate internal truncation precisely. Section-by-section processing may also lose relationships across sections; recheck dependencies during merging instead of simply concatenating summaries.
Checked sources
These sources support the concepts and methods described here. Examples and test scope are labeled separately; check the version of the tools you use.