K3Nova
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.
Upload planning table
| Question | Practical answer | Better habit |
|---|---|---|
| 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 |
Plain answer
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.
Decision checklist
Use this section to keep the next step practical before you touch accounts, files, infrastructure, or hardware.
| Check | Look for | Why it matters |
|---|---|---|
| Read the official source | Start with the model card, help center, docs, or official product page before trusting summaries. | Model names, limits, and prices change. |
| Name the path | Decide whether you need a hosted app, API call, local client, or full self-managed deployment. | Different paths have different costs and account boundaries. |
| Check the boundary | Keep login, payment, API keys, private files, and account settings on the official surface. | A public guide should help you choose, not handle sensitive actions. |
| Keep evidence | Save the source link, date, version, and practical next step that shaped your decision. | This makes later review easier for a team. |
How to read the facts
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.