KEN sits between the question you have and the work you need to finish. Ask it to reason through a decision, draft the thing you have been avoiding, read the file you never opened, or ship the feature you sketched on a napkin.
Reasoning, context, vision, code, knowledge, and tools work as one system — so KEN keeps the whole problem in view instead of answering one piece at a time.
Model family
Choose the intelligence that fits the task.
Switch models mid-conversation. KEN keeps the context, the files, and the thread.
KEN Fast
Everyday questions, quick drafts, and back-and-forth that should feel instant.
Speed
Depth
Context
Standard
Best for
Daily chat
Available
KEN Reason
Multi-step problems, tradeoffs, and work that benefits from thinking before answering.
Speed
Depth
Context
Extended
Best for
Hard problems
Available
KEN Vision
Screenshots, diagrams, scans, and photos — read, described, and reasoned about.
Speed
Depth
Context
Extended
Best for
Visual input
Available
KEN Code
Reads repositories, writes changes, explains failures, and stays in your stack.
Speed
Depth
Context
Long
Best for
Engineering
Available
The interface
A workspace, not a text box.
ken.ai / workspace
KEN CodeSELECTED
FilesWebRun
YOU
📎 checkout-service.ts · 14 KB
Our checkout retries are hammering the payment API. Can you add backoff and explain the fix?
KEN
The retry loop fires every 200 ms with no ceiling, so one slow response turns into a burst. Exponential backoff with jitter spreads the retries out and keeps a failing dependency from cascading.
checkout-service.tsdiff
async functionretry(fn, attempts = 5) {
for (let i = 0; i < attempts; i++) {
try { return await fn(); }
catch (err) {
if (i === attempts - 1) throw err;
// 200ms → 3.2s, ±30% jitterconst wait = 200 * 2 ** i * (0.7 + Math.random() * 0.6);
await sleep(wait);
}
}
}
YOU
Add a circuit breaker too.
KEN
Opening the breaker after five consecutive failures and probing every 30 seconds. Want me to write the tests as well?
Ask KEN anything
⌘K tools
Capabilities
More than a chatbot.
01
Think
Reason through difficult problems and hold the whole thread while doing it.
02
Create
Generate content and ideas in your voice, then refine them line by line.
03
Code
Build, debug, and understand software across the languages you actually use.
04
Research
Explore information across sources and synthesize what actually matters.
05
Analyze
Read documents, spreadsheets, and images, and turn them into an answer.
06
Create images
Turn a description into a visual, then iterate on it in the same conversation.
07
Remember
Keep the context that matters to you, and forget what you ask it to forget.
08
Use tools
Connect intelligence to action — search, run code, and call your own systems.
01 — BUILD
Build
Turn an idea into a working application — scaffolding, logic, tests, and the parts you would have looked up.
02 — RESEARCH
Research
Explore complex topics, compare what sources disagree on, and extract what matters to your decision.
03 — CREATE
Create
Transform rough thoughts into polished content that still sounds like you wrote it.
04 — ANALYZE
Analyze
Turn documents and data into insight — what changed, what is unusual, and what to do next.
05 — LEARN
Learn
Understand difficult concepts faster, at the depth you ask for, without the lecture.
BUILD05
Developers
Build with KEN.
One endpoint, streaming by default, with tool calling and structured outputs that behave the same across every model in the family.
Ken AI is an AI assistant and platform, available at ken-ai.tech. You can chat with Ken in the app, upload files and images for it to read, ask it to write or debug code, and call the same models from your own software through the API.
Ken is built around one workspace rather than a series of disconnected chats. Models, files, memory, and tools stay in the same thread, so switching from a quick answer to deep work does not mean starting over. The honest answer on quality is to try it on your own work.
Four in the KEN family: Fast for everyday conversation, Reason for complex problems, Vision for images and visual input, and Code for engineering work. You can switch between them mid-conversation from the model selector.
Yes. Attach documents, spreadsheets, code, and images, and Ken reads them in context. It can summarise, compare, extract structured data, or answer specific questions against what you uploaded.
KEN Code writes, reviews, and explains code across common languages and frameworks. It can work from an error message, a file you paste in, or a description of what you want to build.
On paid plans Ken can remember context you choose to keep — how you like your code formatted, what you are working on, who your team is. You can review what it remembers and delete any of it at any time.
Yes. The API exposes the full model family with streaming, tool calling, and structured outputs, with SDKs for TypeScript, Python, and Go.
There is. The Free plan includes KEN Fast, file uploads, and history, with a daily message limit. No card required to start.