"Hybrid Reasoning Agents" Tool use is communicate through text, while latent reasoning operates on continuous hidden vectors, making latent reasoning unable to support tool use. HybridAgent combines both by switching to text mode when it needs to invoke tools, then returning to latent reasoning afterward. It also preserves the KV cache across turns so previous latent states aren't lost. This results in 10.4% better performance than matched text and latent baselines, with 35-55% fewer…