Precision vs throughput for document summarization. We compare Claude Sonnet 4.5 and Gemini 3 Flash on five dimensions that define high-quality summaries.
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Task-specific scoring for summarization workloads across 5 dimensions.
| Dimension | Claude Sonnet 4.5 | Gemini 3 Flash | Edge |
|---|---|---|---|
| Key Point Extraction | Highly selective about what to include. Excellent at distinguishing primary findings from supporting details. | Identifies main points quickly. Occasionally includes secondary information that dilutes the summary. | |
| Brevity | Naturally concise. Follows word-count constraints precisely. | Also brief, sometimes too terse. May lose important nuance in pursuit of brevity. | |
| Factual Accuracy | Very careful about preserving original meaning. Rarely introduces claims not in the source. | Generally accurate but can introduce subtle paraphrasing shifts on technical content. | |
| Structure | Adapts format to content type. Uses narrative for reports, bullets for research papers. | Consistent bullet-point format. Less adaptive to different content types. | |
| Technical Content | Preserves technical precision while keeping summaries accessible. Strong with scientific and legal text. | Handles general technical content well. Less reliable on highly specialized domains. |
Pick Claude Sonnet 4.5 for summarizing reports, research papers, legal documents, and any content where accuracy and nuance are critical.
Pick Gemini 3 Flash for batch summarization of large document collections, very long documents exceeding 200K tokens, and quick overviews where speed outweighs precision.
Claude Sonnet 4.5 wins all five summarization dimensions. Its precision, factual accuracy, and format adaptability make it the best choice for professional summarization. Gemini 3 Flash's speed and 1M-token context make it useful for processing very long documents or high-volume batch work.
Use LLMWise Compare mode to test Claude Sonnet 4.5 vs Gemini 3 Flash 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.