Your code.
Your rules.

An AI assistant that runs on your machine, uses your API key, and doesn't phone home.

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Pay only what you use

Direct API access. No subscription. Free models available.

OpenRouter provides access to 35+ models. Many are free with rate limits. Paid models bill per-token through your own account. No middleman markup. Cancel anytime by just... not using it.
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No vendor lock-in

Switch models anytime. Export sessions. Code is open source.

Sessions are stored as JSON in ~/.local/state/hyle/. You can read, modify, or delete them. Switch between Claude, GPT-4, Llama, or Mistral with a single command. The source code is MIT licensed.
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Your local environment

Runs in your terminal. Reads your files. Uses your tools.

hyle runs as a single binary in your terminal. It accesses only the files you work with. Bash commands run with your permissions. No cloud sync, no project upload, no dependency on external services beyond the LLM API.
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Offline slash commands

/build /test /commit — 20+ commands that work without any API call.

Slash commands run instantly without touching the API. /build, /test, /check, /diff, /status, /ls, /grep, /view, /cost, /model, /doctor, /commit, and more. Perfect for quick operations between AI-assisted tasks.

Cost Calculator

20 prompts/day
Typical AI subscription $20-200/mo
hyle + free models $0/mo
hyle + Claude 3.5 Sonnet ~$3.00/mo
hyle + GPT-4o ~$5.00/mo
Your savings vs subscription
$15-197/mo

Free Models Available

Llama 3.1 70B
Meta
FREE
Mistral 7B
Mistral AI
FREE
Gemma 2 9B
Google
FREE
Qwen 2 7B
Alibaba
FREE
Phi-3 Mini
Microsoft
FREE
CodeLlama 34B
Meta
FREE
$ cargo install --git https://github.com/uprootiny/hyle click to copy
$ hyle config set key YOUR_KEY click to copy
$ hyle --free click to copy
# that's it. start building.
Get Started
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Default Composable Velocity Reliable Depth Playful Observable Community Independent Learning Control Secure Flow