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Stealth models

Stealth is OpenRouter's namespace for models served before their lab is disclosed. Zeplik carries Space Bunny Alpha, an anonymous model with a 1M-token window, vision, tool calling and adjustable reasoning effort, offered free while it is in preview.

All 1 Stealth model

Pricing at a glance

ModelContextInput cr/MOutput cr/MReleased
Crouton Alpha1.0M00November 2026

Frequently asked questions

Which Stealth models can I use on Zeplik?
Zeplik carries 1 Stealth model: Crouton Alpha. They all run in the same chat, so you do not need a separate Stealth account or API key.
Which Stealth model has the largest context window?
Crouton Alpha, at 1.0M tokens (1,048,576). The context window covers the conversation plus any documents you attach.
Do Stealth models support images and tool calling?
All 1 accept image input, and all of them support tool calling.
Do I need a paid plan to use Stealth models on Zeplik?
All 1 need a paid plan (Plus or above). Usage is then billed in credits from your monthly allowance.
What is the newest Stealth model on Zeplik?
Crouton Alpha, released November 2026. Crouton Alpha is a lightweight model built for scalable coding, agentic, and multimodal workflows. It's ideal for executing agentic sub-tasks, tool use, and document analysis in high-volume, repeated work.

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