The best AI for long documents & PDFs
Which model to use for long documents & PDFs, why, and how to try it without paying for three separate subscriptions.
Model data updated: 2026-08-16
Top pick: Claude
The largest context window here, so a long report goes in whole instead of being chopped up.
Favoured for long documents, careful reasoning and natural writing, with very large context windows.
- Handles very long documents in one pass
- Natural, low-cliché writing style
- Careful step-by-step reasoning and coding
| Representative model | Provider | Context | Input | Output |
|---|---|---|---|---|
| Claude Opus 5 | Anthropic | 128K | $15 | $75 |
per 1M tokens. Prices are the providers’ list prices in USD per million tokens and can change at any time. Use them for comparison, not billing.
Also good
Gemini
Strong price-to-performance with fast responses and generous free access — the model behind Blend’s free trial.
ChatGPT
The most widely used general-purpose assistant, with the broadest ecosystem of tools and integrations.
Try this question
Summarise this 60-page report into decisions and action items.
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Model capabilities and prices change often. Figures come from Blend’s automatically synced registry and are shown for comparison. All model prices