Apex: A Fast, Specialized Model for React Native
SMRTR summary
Callstack has launched Apex, a React Native-specific AI coding model built on Gemma 4 and fine-tuned with SFT and GRPO. Unlike general-purpose models, Apex carries React Native knowledge directly in its weights, reducing tool calls and improving inference speed to 2,000–4,000+ tokens per second. It's currently in private beta while legal and commercial details are finalized.
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