Stealth

Space Bunny Alpha

stealth/space-bunny-alpha

Space Bunny Alpha is an anonymous large model with fast inference, strong coding capabilities, native multimodal input, adjustable reasoning effort, and a one-million-token context window. It is operated by an undisclosed third-party provider during this preview.

Union Alpha

stealth/union-alpha

Union Alpha was an anonymous test alias for Unbiased's Pareto 26.9. The alias was retired from provider routing on 2026-09-17; this historical record is retained for documentation and is not enabled for routing.

Ox Alpha

stealth/ox-alpha

Ox Alpha was an anonymous stealth-preview reasoning model for coding, sustained agentic work, and production workloads. OpenRouter reported that the model was revealed as Z.AI GLM-5.3-Flash and is no longer available under the Ox Alpha name.