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Quancis

One System. Three Ways In.

Quancis builds Kael, in two models, and the products people actually use it through.

KaelThe models, as an API.

Two Models. One API.

Kael comes in two models: Kael Beta for most work, and Kael Pro Beta for the hardest problems. You call one endpoint, in the request format you already send.

AcceptsChat CompletionsResponsesAnthropic Messages
Explore Kael
Quan HarnessThe coding agent.

Hand It A Task. Get It Back Done.

Point Harness at a codebase and it reads, plans, edits, and checks its own work before handing anything back. It runs in a real project environment, in whatever stack you already use.

  • A live preview the moment something changes
  • Git push and pull from a cloud file system
  • MCP tools and skills for work beyond code
Explore Harness
Quan ChatThe assistant.

Just Ask. Get A Considered Answer.

The same Kael as the API and Harness, in a conversation. Built for accuracy over speed, so it thinks before it answers.

  • Deep reasoning for the hard questions
  • Web access for when the answer is out there
  • One subscription, unlimited conversations
Try Quan Chat
Kael, in brief

Kael, At A Glance.

Kael is in beta, in two models: Kael Beta and Kael Pro Beta. It is built for accuracy over speed, and it is strongest at coding, security, software engineering, agentic work and math. These are the facts a developer asks for first.

Model IDs
kael-beta, kael-pro-betaTwo models. The string you pass as "model".
Status
BetaThings will change as we learn from real use.
Context window
1M tokensInput per request.
Max output
128k tokensPer response.
Input
Text and imagesPDFs, video and other file types are on the way, not in the beta yet.
Languages
EnglishOther languages have not been tested, so they are not listed as supported.
API formats
Chat Completions, Responses API, Anthropic MessagesUse the SDK you already have.
Thinking levels
Kael Beta: Low, High, Max. Kael Pro Beta: z-low, z-highEvery level thinks first. There is no Off setting and no Auto level.
Everything about Kael →Play the games Kael built in chat →

One Name. Built For Accuracy.

Quancis comes from quán, the Chinese word for the whole. Not a fragment, and not a committee of parts pretending to be one thing. It's how a company works: hundreds of people and tools, and the world sees one name on the door.

Kael is that idea applied to answers: one Kael, in two models, built to be right. The API, Harness, and Chat are three ways of reaching it.

  1. Accuracy over speed

    Kael thinks before it answers, and takes longer than most models on purpose.

  2. Two models

    Kael Beta for most work. Kael Pro Beta, the most thorough, for the hardest problems.

  3. Honest limits

    Text and images in, English only, and no benchmark numbers until independent results exist.

Ready?Kael·Quan Harness·Quan Chat