Kimi's help center says common formats such as PDF, Word, Excel, PPT, images, TXT, and video are supported, with each file no larger than 100 MB and up to 50 files at a time.
Upload size is not the only limit. Long documents still need a model and plan that can handle the context. K2.6 is listed around 128k single-turn context, while K3 can provide a 1M-token context on the highest membership tier.
AI handoff prompt and permissions
Copy this prompt into Kimi Code, K3Nova, or another AI agent. Keep approval manual for file writes, shell commands, account actions, and secrets.
Copyable AI prompt
Use this to give the agent the task and safety boundary in one message.
You are my AI agent for this task: check whether my files fit Kimi upload limits and produce a split, compression, or source-map plan when they do not.
Start by restating the goal and the permissions you need.
Use official docs or the files I provide before making claims.
Give me a direct answer first, then a short table or checklist.
If commands are needed, show exact copyable commands without a shell prompt.
Ask before writing files, running shell commands, deleting or moving data, logging in, spending money, changing account settings, or handling API keys.
Stop and ask me when a step requires secrets, payment, account access, destructive cleanup, or a permission broader than the task.
Recommended AI permissions
Permission
Give AI
Why
Public research
Allow official docs, cited public pages, and web search results.
Needed to refresh facts without touching private data.
Local files
Do not allow local file access unless you name a folder for inspection.
Most research pages do not need your machine.
Write or shell
Ask before Write, Edit, Bash, or any command execution.
Keeps the task reviewable.
Sensitive actions
Deny login, payment, API keys, account changes, and private screenshots.
Those actions need a human decision.
How to read the facts
File size versus context
A file can upload successfully and still be too large or too noisy for a good answer. Context planning decides whether the model can use it well.
When to summarize first
Summarize repeated logs, long transcripts, or old project notes before asking for a decision.
Sensitive files
Do not upload credentials, private keys, or confidential records unless the product, account, and data policy match your risk requirements.
Quick scan cards
Maximum size per file
100 MB according to Kimi help Compress only when the format remains readable
Maximum file count
Up to 50 files at a time Group by task, not by every possible source
Best file types
Common office, text, image, and video formats Convert unusual formats before uploading
Long context
K3 can reach 1M context on the right tier Use a source map and remove stale material
FAQ
What is the max file upload on Kimi?
Kimi help lists 100 MB per file and up to 50 files at a time.
Does 100 MB mean Kimi will use every detail well?
No. A clean source map and task-specific bundle usually matter more than simply uploading the largest file.
What should I do with a file over 100 MB?
Split it by chapter, table, media segment, or task, then upload only the pieces needed for the answer.
K3Nova