Gemini 3.1 Pro AI Model to read long reports, code and video
Google Chat and reasoning models Upgrade to use google/gemini-3.1-pro-preview
This page describes Google’s Gemini 3.1 Pro model and when teams pick it on Katteb. Gemini 3.1 Pro handles text, images, audio, video and files and offers a million-token context for long documents and codebases.
What it can do
- Reads images and screenshots
- Searches the live web and cites sources
- Reads PDFs and documents
- Thinks step by step on hard questions
- Understands video input
What people use it for
Summarize and index a 500+ page report
Feed a full research PDF or a folder of reports and get structured summaries, chapter outlines and a searchable index so you can find statements, sources and figures without manual chunking. Gemini 3.1 Pro’s long context keeps the whole document in memory for cross-chapter reasoning.
Review codebase and produce fixes
Upload a repository or large code export and ask for bug hunts, security notes and refactor suggestions that consider the whole project history and dependencies rather than isolated files. The model reads large code contexts and returns long, structured outputs.
Analyze meetings, podcasts and product videos
Send hours of audio or video and get speaker-separated transcripts, highlights, action items and time-stamped quotes for reports or compliance. Gemini 3.1 Pro accepts audio and video inputs natively and can reason across long recordings.
Why it is worth it
- Process files, audio and video together without manual splitting.
- Work with documents and code up to roughly one million tokens in a single prompt.
- Produce long structured outputs up to tens of thousands of tokens for reports and exports.
- Switch models mid-conversation on Katteb while keeping the same chat history and billing per message in credits.
Questions people ask
What is Gemini 3.1 Pro good at?
It is suited to complex reasoning over very large inputs and multimodal data: long documents, codebases, audio and video. It is designed for tasks that benefit from a million-token context rather than short prompts.
Can it read my videos and multi-hour recordings?
Yes. Gemini 3.1 Pro accepts native audio and video inputs and can process recordings that map into its long-context limits, returning transcripts, highlights and time-coded summaries. Exact maximum lengths depend on how the input converts to tokens.
How is billing handled on Katteb for this model?
Katteb bills Gemini 3.1 Pro per message in credits; the model at katteb.com/chat costs 28 credits a message. You still control prompt size and file uploads, which affect usage and credits consumed.
