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Plexar
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From multiplexer to platform

Give yourself back time.

Plexar started as a terminal multiplexer. It's now a platform: our models, our agent harness, and the tools to build with them or just use them.

Get Studio open source
plexar-studio — 4 panes
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One platform, nine surfaces.

Studio and Framework are open source, Chat is free with a Google sign-in, Mobile is a free Android download, and Harness is a Windows download. The rest, and Harness itself, are by invite for now; each tool is granted on its own.
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See each tool before you ask for it.

A look at every Plexar surface as it is today. Studio and Framework are open source, Chat is free to start, and Harness and Mobile are downloads. Access to the rest is by invite.

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Endpoint
Stays the same when the model behind it changes.
https://llm.plexar.tech/v1
Your key
Admits exactly what you were granted, nothing wider.
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Shown once. Store it somewhere safe.
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Connect
OpenAI-compatible. Wherever a client asks for an API key, paste your key; wherever it asks for a base URL, paste the endpoint.
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Authorization: Bearer YOUR_KEYis sent with every request.
Playground
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Qwen3.6 35B ⌄
Temp 0.7 ⌄
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Tokens, last 14 days
OutputInput
Sep 11Today
Plexar Framework

Agents propose. People approve. The gate decides.

The control plane for agent runs. Prompts go into a bucket, a batch is picked with a stated reason, a named person approves it, and a daemon runs it. A task lands only if the gate exits 0.

$ plexar init && plexar up
One task, start to finish
bucket: web · task t-142
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~/plexar-agents/logs/2026-09-24.jsonl
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A review chain that shows its evidence.

A worker does the task, a verifier runs it and photographs anything visual, and an approver checks the verifier. You get a QA report with the screenshots and every model's verdict.

It is still AI judgement. Treat each verdict as a lead to confirm; your own verdicts are kept beside the AI's and make the next report sharper.

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Plexar Chat
Search chats, projects, messages⌘K
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Signed in
Where should we start?
Ask a question, paste something to work through, or pick a starting point.
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Ask Plexar anything
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Attach
bonsai-27b ⌄
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Plexar can be wrong. If an answer stops early, the message will say so.
9:41●●● 5G
PLEXAR
Good afternoon
Assistant
Plexar Assistant
Idle
Your morning summary is ready.
Open chat
Plexar Studio
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›
Plexar Chat
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+ Add a tool
Plexar Access

Models and every Plexar tool are granted by hand. Pick what you need and tell us what you're building.

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Reviewed by hand
Request received.
You'll get an email once it's reviewed. Approved tools switch on at their own subdomains, and your usage shows up here.
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