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Auto Router (Beta) is the early-access track of OpenRouter's task-aware Auto Router, where new routing behaviors land before they reach the stable openrouter/auto. It uses the same market-driven selection (prompts classified into ~30 task types, routed by trailing 7-day community spend with a cost_tier dial) and prices each response at the routed model's rate; choose it to try the newest routing changes first.
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)
