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This is the free OpenRouter endpoint for Thinking Machines Lab's Inkling-Small, a 276B-parameter mixture-of-experts model (12B active, Apache 2.0 license, 1M-token context) released July 30, 2026 as the smaller, efficient sibling in the Inkling family. Free access is rate-limited to agentic-harness use with prompt and output logging, making it best suited for evaluating its coding, agentic, and RAG capabilities rather than production workloads.

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.