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  3. Claude 3.5 Sonnet

AI Chat for Long Documents with Claude 3.5 Sonnet

Claude 3.5 Sonnet is a large language model built for text generation, reasoning, and reading visual content. It solves the problem most chat tools hit: documents that are too long to process, questions that need step-by-step logic, and tasks that mix written text with images. Paste a full contract, a research paper, or a lengthy transcript and the model holds every detail in scope. The 200K token context window means you can submit the equivalent of a full novel without losing context midway. Visual input lets you upload a photo or screenshot and ask the model to interpret what it sees alongside your written instructions. For writing tasks, it produces long-form drafts, structured reports, and formatted lists that match the style you specify. Analysts use it to extract insights from dense documents. Writers use it to draft and refine content without switching between tools. Paste your prompt, attach any supporting files, and generate.

Official

Anthropic

588k runs

Claude 3.5 Sonnet

2025-02-11

Commercial Use

AI Chat for Long Documents with Claude 3.5 Sonnet

Table of contents

  • Overview
  • How It Works
  • Frequently Asked Questions
  • Credit Cost
  • Features
  • Use Cases
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Overview

Claude 3.5 Sonnet is a large language model on Picasso IA built for text generation, reasoning, and reading visual content from a single interface. Most AI chat tools hit a limit when documents get long or tasks require genuine logical steps. This model was built for exactly those situations: it holds up to 200K tokens in context, meaning you can paste in a full contract, research paper, or lengthy email thread and ask questions about any part of it without cutting the content short. Writers, analysts, and developers use it daily for tasks where both precision and document length matter.

How It Works

  • Type your prompt into the input field. You can ask a question, give an instruction, or paste in a long passage of text for the model to process.
  • To include an image, attach it alongside your text prompt. The model reads both at once and incorporates what it sees into its reply.
  • Add a system prompt to set persistent behavior for the session, such as a specific tone, a persona, or formatting rules you want applied to every response.
  • Adjust max tokens if you want to cap the length of the output. The default is 8192 tokens, which is sufficient for several pages of detailed content.
  • Review the output and iterate. Refine your prompt with more specific instructions and run again. Your prior context stays loaded.

Frequently Asked Questions

Do I need programming skills or technical knowledge to use this? No, just open Claude 3.5 Sonnet on Picasso IA, adjust the settings you want, and hit generate.

Is it free to try? Yes, you can run Claude 3.5 Sonnet on Picasso IA at no cost to start. Credit usage applies for longer outputs depending on your plan.

How long does it take to get results? Short prompts return replies in 2-5 seconds. Longer prompts requesting multi-page output may take up to 20-30 seconds. The model prioritizes accuracy on complex reasoning tasks, so the extra time reflects real work being done.

What output formats does it support? The model outputs plain text by default. You can request markdown, JSON, numbered lists, tables, or any custom format by describing the structure in your prompt. It follows formatting instructions reliably.

Can I send images with my prompt? Yes. Upload a photo, screenshot, or diagram and the model reads it alongside your text. You can ask it to describe visual content, extract data from a table, or answer questions based on what appears in the image.

What happens if I'm not happy with the result? Refine your prompt with more specific instructions, add a system prompt to constrain the output style, or adjust the max tokens setting. Most output issues resolve with one or two prompt revisions.

Credit Cost

Each generation consumes 1 credit

1 credit

or 5 credits for 5 generations

Features

Everything this model can do for you

200K context window

Process entire books, legal contracts, or long transcripts in one prompt without losing any content.

Visual input

Upload a photo, screenshot, or diagram and ask questions about its content in the same prompt.

Long-form output

Generate responses up to 8192 tokens, enough for detailed reports, multi-section articles, or structured data exports.

System prompt control

Set a persistent instruction that shapes tone, role, or output format across the full session.

Structured format output

Request JSON, markdown tables, numbered lists, or any custom layout by specifying it in the prompt.

Step-by-step reasoning

Get answers that walk through logic in stages, reducing errors on multi-part or calculation-heavy questions.

Supports multimodal workflows

Ideal for creative, technical, and business use

Use Cases

Summarize a 50-page document by pasting the full text and asking for a structured breakdown with bullet points

Ask follow-up questions about a long document without losing earlier context, using the 200K token window to keep everything in scope

Upload a screenshot of a chart or table and ask the model to read the data and write a plain-language explanation

Draft a long-form article, report, or proposal from a brief set of instructions and a desired word count

Generate structured JSON, markdown tables, or numbered lists by describing the exact format you need in your prompt

Refine existing copy by pasting it in and requesting a specific tone, length, or structural change

Work through complex multi-step questions where the model reasons through each stage before giving a final answer

Supporting research with comprehensive data analysis

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