Need to condense long documents into clear summaries? We test GPT-5.2 and Claude Sonnet 4.5 on five summarization dimensions to find which model captures what matters.
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Task-specific scoring for summarization workloads across 5 dimensions.
| Dimension | GPT-5.2 | Claude Sonnet 4.5 | Edge |
|---|---|---|---|
| Key Point Extraction | Identifies the most important points reliably. Occasionally includes secondary details that dilute the summary. | More selective about what to include. Better at distinguishing primary findings from supporting evidence. | |
| Brevity | Produces concise summaries when instructed. Slightly verbose by default. | Naturally more concise. Follows word-count and bullet-count constraints more precisely. | |
| Factual Accuracy | Generally faithful to source material. Occasionally paraphrases in ways that subtly shift meaning. | More careful about preserving original meaning. Less likely to introduce claims not present in the source. | |
| Structure | Good at producing structured summaries with headers and bullets. Clean formatting. | Equally well-structured. Better at adapting format to the content type (narrative for reports, bullets for research). | tie |
| Technical Content | Handles technical documents well but sometimes over-simplifies specialized terminology. | Preserves technical precision while still making summaries accessible. Better with scientific and legal documents. |
Pick GPT-5.2 for quick, informal summaries of news articles, meeting notes, or short documents where perfect accuracy is less critical than speed.
Pick Claude Sonnet 4.5 for summarizing long technical documents, legal contracts, research papers, or any content where preserving meaning and accuracy is essential.
Claude Sonnet 4.5 is the stronger summarizer across all dimensions. Its 200K context window can process entire reports in a single pass, and its commitment to factual accuracy makes it the safer choice for professional summarization. GPT-5.2 is a solid alternative for quick, informal summaries.
Use LLMWise Compare mode to test GPT-5.2 vs Claude Sonnet 4.5 on your own summarization prompts.
You only pay credits per request. No monthly subscription. Paid credits never expire.
Replace multiple AI subscriptions with one wallet that includes routing, failover, and optimization.