The Space Bunny ecosystem
Space Bunny Alpha is a stealth large language model that appeared on OpenRouter on 2026-09-23 under the id stealth/space-bunny-alpha. It ships a 1M-token context window, multimodal input, reasoning, and unusually strong coding — offered as a free preview. This page explains where the model lives and every way you can actually use it.
Where Space Bunny lives
Space Bunny Alpha is published as a stealth preview on OpenRouter. Stealth models are released without the provider being named, usually so a lab can gather real-world feedback before an official launch. The provider behind Space Bunny is anonymous and unconfirmed. Community reverse-engineering (tokenizer behaviour, response fingerprints, and release timing) suggests it is likely MiniMax M3, but this has not been confirmed by the provider, so treat it as an educated guess rather than fact.
Because it is a preview, the model is currently free. That can change without notice, and stealth models are sometimes renamed or retired when the official version ships — so the access routes below are designed to keep working even if the OpenRouter id moves.
Ways to use it
There are several paths to the same model. Pick whichever fits your workflow — no single one is required.
Free playground
Try Space Bunny directly in your browser. No signup, no key, no OpenRouter account — just type and go. The fastest way to see what the model can do.
spacebunnymodel.comOur hosted API
An OpenAI-compatible endpoint we host for you. Base URL https://spacebunnymodel.com/api/v1 with an sb_live_ key. Works with any OpenAI SDK and needs no OpenRouter account of your own.
/api/v1OpenRouter directly
If you already have an OpenRouter account, call the model straight from there using its stealth id. You manage your own billing and rate limits.
stealth/space-bunny-alphaopencode
Wire Space Bunny into the opencode terminal agent for coding tasks. See our step-by-step guide for the exact config.
opencode + Space BunnyAny OpenAI SDK
Point the official OpenAI SDK (Python, Node, or anything OpenAI-compatible) at our endpoint and change nothing else. Drop-in usage in your existing code.
baseURL → /api/v1How it compares
Space Bunny arrives in a busy moment: it is one of several fast, long-context models emerging right now. People often line it up against other OpenRouter stealth releases and recent models such as MiniMax, MiMo, GLM, and DeepSeek — all capable, all evolving quickly. Each has its own trade-offs in speed, context length, pricing, and coding strength, and the right pick depends on your task.
Our angle is simple: convenient, free access. We are not trying to declare a winner. We give you the shortest path to trying Space Bunny — a zero-setup playground and a drop-in OpenAI-compatible API — so you can judge it against whatever you already use, on your own workload.
Try Space Bunny in the playground →
Community resources: awesome-space-bunny — a curated list of guides, code examples, opencode setups and integrations for the Space Bunny model.