Microsoft releases FrogNano-4B agentic model

Microsoft released FrogNano-4B-2609 on Hugging Face, a model derived from Qwen3.5-4B and post-trained on repository-level software engineering with reinforcement learning across about 1,500 synthetic SWE task environments. Aimed at users with limited GPU resources, its performance depends on the Leaf harness and test quality, and generated patches need human review.

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