Indie dev open-sources Qwen-2.5-1B-RLCD with 5x faster on-device JSON inference

suchenzang · x · 2026-09-16

Indie developer harshagundal open-sourced Qwen-2.5-1B-RLCD, claiming 5x faster on-device inference for type-safe JSON workloads, with a demo running on an M4 MacBook.

The trick requires no new training: LLMs can batch-infer every key of a JSON at once and generate probabilities over a set of possible categories, enabling efficient type-safe structured output — easy to optimize further if needed. The model is on Hugging Face.

Cohere researcher suchenzang quipped about "2 years of stealth vs my 2 hours," calling it a fun demo that likely won't match the original model's performance but praising the hustle.

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