Moonshot AI · K3.1 series · October 24, 2026
Kimi K 3.1: the series name behind Kimi K3.1 Pro
Kimi K 3.1 is how people space Moonshot's K3.1 series. The company did not publish a separate model whose only name is Kimi K 3.1. The first model in that series is Kimi K3.1 Pro, also searched as Kimi 3.1 Pro, plus a faster serving called Highspeed.
This generator runs Nano Banana 2.1 for 8 credits an image. It is not Kimi K 3.1 and it does not call kimi-k3.1-pro. For the API notes, open the Kimi 3.1 Pro page.
64 free credits = 8 standard images. No card required.
Output board
Your generated variations will appear here.
- Made by
- Moonshot AI
- Released
- October 24, 2026
- Run on Nano AI
- Nano Banana 2.1 · 8 credits per image
- Page updated
- October 31, 2026
Source: kimi.ai
What Kimi K 3.1 points at
Moonshot's posts, including the Chinese page updated October 24, 2026, introduce Kimi K3.1 Pro as the first model of the K3.1 series and as a post-trained version of the earlier Kimi K3. They pair it with Kimi K3.1 Pro Highspeed. If the query is Kimi K 3.1, the product to read about is that pair, not a third model ID. The API IDs in the quick start are kimi-k3.1-pro and kimi-k3.1-pro-highspeed.
Kimi K3 remains the previous model. Moonshot's tech blog compares the new long-horizon score, 61.2% for K3.1 Pro, with 55.95% for K3, and reports 65.7% for K3.1 Pro on Terminal-Bench 4.0. Those numbers are theirs. This page does not add a score for a model named only Kimi K 3.1, because the posts do not define one.
Full weights are described as coming by 2026-11-04. This page, written October 31, 2026, does not link a checkpoint. The longer API walkthrough, the sample call and the place list are on the Kimi 3.1 Pro page, which this page is attached to.
Kimi K 3.1 at a glance
- Search
- Kimi K 3.1
- What Moonshot shipped
- Kimi K3.1 Pro, the first K3.1 model
- Spaced model search
- Kimi 3.1 Pro, same model
- Faster serving
- Kimi K3.1 Pro Highspeed, ID kimi-k3.1-pro-highspeed
- Earlier model
- Kimi K3, which Pro is post-trained from
- Context, per Moonshot
- 1,000,000 tokens on Kimi K3.1 Pro
- Weights
- Promised by 2026-11-04
- On Nano AI
- Nano Banana 2.1, 8 credits an image
Keep the names apart
Series, then model
K3.1 is the series. Kimi K3.1 Pro is the model. Typing Kimi K 3.1 does not uncover an extra checkpoint in their posts.
Highspeed shares the post
Moonshot presents Highspeed in the same announcement and says it is about 2 to 3 times faster, not a different series.
K3 is the parent, not the alias
Kimi K3 is the earlier model. Their long-horizon line for it is 55.95%, against 61.2% for K3.1 Pro.
Images stay on Nano Banana
The form above is Nano Banana 2.1 at 8 credits. It will not answer as Kimi and it will not download weights.
Kimi K 3.1 next to the names in the posts
Moonshot's posts as read on October 31, 2026. No row invents a model ID for the spaced series query.
| Kimi K 3.1 | Kimi K3.1 Pro | Kimi K3 | |
|---|---|---|---|
| In their posts | A way to type the series | The first K3.1 model | The earlier model |
| API ID | None published under this spacing | kimi-k3.1-pro | Not a K3.1 ID |
| Highspeed | Not a separate series | kimi-k3.1-pro-highspeed | Not part of this row |
| Their long-horizon bench | No separate score | 61.2% | 55.95% |
| Weights date | The Pro promise | 2026-11-04 | Already a prior release |
How to go from this spelling to a tool
- 1
Open the Kimi 3.1 Pro page for the API
That page has the sample call for kimi-k3.1-pro and kimi-k3.1-pro-highspeed, and the list of Kimi apps. This page only sorts the names.
- 2
Or make an image here
Nano Banana 2.1 is selected. A prompt from the list costs 8 credits an image. It does not call Moonshot.
- 3
Ignore unofficial weight dumps
Until 2026-11-04, Moonshot's own posts are the source for whether the files exist. A random download is not the K3.1 release.
Image prompts, not Kimi prompts
For Nano Banana 2.1. The Kimi 3.1 Pro page explains the language model.
Workshop table
A tidy workshop table with birch offcuts, one clamp and a pencil, north light, no people, no readable text, no logos.
Ferry bench
An empty wooden bench on a small ferry, grey water, overcast light, no people, no readable text, no logos.
Ink stones
Two ink stones and a dry brush on rice paper, top-down, soft daylight, no characters, no people, no logos.
Night bakery
A closed bakery window at night, trays of bread, warm light inside, wet street, no people, no readable text, no logos.
FAQ
Kimi K 3.1 FAQ
Which product the spaced series query maps to.
Is there a model called only Kimi K 3.1?
Not in Moonshot's K3.1 posts. They announce Kimi K3.1 Pro as the first model of the K3.1 series, and Highspeed as its faster serving. Kimi 3.1 Pro is the same Pro model with spaces.
Where is the API write-up?
On the Kimi 3.1 Pro page, which this page links as its parent. The IDs are kimi-k3.1-pro and kimi-k3.1-pro-highspeed.
How does K3 fit?
Moonshot says Kimi K3.1 Pro is a post-trained version of Kimi K3. Their long-horizon numbers are 61.2% and 55.95%. This page does not invent a Kimi K 3.1 score.
When are the weights due?
The posts say full weights by 2026-11-04. Checked October 31, 2026, this page still does not link a file.
What does the generator on this page run?
Nano Banana 2.1, at 8 credits an image. Eligible new accounts get 64 credits, enough for 8 images. It is not a Kimi session.
Is Nano AI affiliated with Moonshot?
No. Nano AI is not affiliated with Moonshot AI or Kimi. The series explanation quotes their public posts as read on October 31, 2026.
More from Nano AI
Related pages
Nano AI is an independent service and is not affiliated with Moonshot AI or Kimi. Kimi K 3.1 is a search spelling. The model named in Moonshot's October 24, 2026 post is Kimi K3.1 Pro. Scores and the 2026-11-04 date are theirs, as read on October 31, 2026. The generator runs Nano Banana 2.1.