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Space Bunny Alpha is a stealth-mode model from an anonymous third-party provider being previewed on OpenRouter, with text, image, and video input, a 1M-token context window, adjustable reasoning effort, and function calling. It emphasizes very fast inference and strong coding, and is free during the preview; prompts and completions may be retained by the provider but are not used for training.
Claude Haiku 4.5 is Anthropic's fast, affordable small model in the Claude 4 generation, balancing strong instruction-following and coding ability with low latency. It is designed for high-throughput agentic and chat applications where speed and cost efficiency are priorities.
Benchmarks
Head-to-head scores across reasoning, coding, and agentic indices, plus per-domain rankings.
Intelligence
Claude Opus 5.5 (Max, Default Fallback)Claude Sonnet 5.5 (Max, Default Fallback)
