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Books, contracts, transcripts, codebases — which AI handles the giant context without losing the middle.
No credit card · run the same prompt across all 4 models in one window
Long-document work tests context window, attention quality, and the 'lost-in-the-middle' problem — where a model technically accepts 200k tokens but stops paying attention to the middle 60% of them. The four models differ a lot here.
If you're routinely working with PDFs over 50 pages or transcripts over 10,000 words, the model you choose actually matters.
Gemini 2 Pro's 2-million-token context window dwarfs the rest, and its attention quality across that window is excellent — it can genuinely 'see' a full book or codebase. For raw size, nothing comes close. Claude wins for quality-per-token when the document fits in 200k.
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Strength
2M-token window; best attention across long documents; supports video.
Weakness
Slower on very long inputs.
When to use
Books, codebases, multi-document analysis, video.
Strength
Best output quality per token; least likely to invent.
Weakness
200k context is huge but smaller than Gemini.
When to use
Most professional long-doc work — reports, contracts, transcripts.
Strength
128k context; reliable on docs that fit.
Weakness
Smaller window than the other two.
When to use
Most everyday docs; not for whole books.
Strength
Strong on documents that fit; punchy summaries.
Weakness
Window smaller; less long-doc-specialised.
When to use
Shorter long-form.
How much can you paste in one go?
Does it actually use the middle of long inputs?
Does the output stay true to the source?
Can it compare across documents?
Gemini if it fits in 2M tokens; Claude if it fits in 200k (it usually does). Run both in MultipleChat for the cross-check.
Yes, with Gemini 2 Pro. Output stays best when you ask one focused question per chat.
Ask structured questions, not 'summarise this'. The 5-bullet structure prompt wins 9 times out of 10.
Ask for page or line references. The honest models will admit when they don't have one.
MultipleChat lets you run the same prompt across ChatGPT, Claude, Gemini and Grok side-by-side. Verify the ranking on your actual work, not someone else's benchmark.
Try MultipleChat FreeAlso see: Which AI should I use? (quiz) · Best AI for other tasks · AI for your profession
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Multi-model AIRun the same prompt through ChatGPT, Claude, Gemini and Grok before trusting one answer.
GuideChoose the best model for writing, research, coding, documents, images and business work.
Buyer intentOne app for several frontier AI models, side-by-side comparison and model collaboration.
PlatformA professional workspace for using several AI models, comparing answers and creating deliverables.
Core conceptUse several frontier models together for stronger answers and fewer blind spots.
ComparisonCompare several AI answers side by side when the output matters.
WorkflowBuild a professional AI stack for documents, research, writing, images and automation.
Free toolsStart with free tools, then upgrade when multi-model workflows save real time.
