I Tested Haiku 5.5 vs Luna vs DeepSeek Flash vs Gemini 3.8 Flash on real-ish work stuff. Basically a tie on quality, big differences in speed

A developer tested Haiku 5.5 against Luna, DeepSeek Flash, and Gemini 3.8 Flash using a custom harness for real-world work tasks. The quality of these models was largely a tie, but significant speed differences were observed. Gemini 3.8 Flash excelled in tool calling, achieving 81% accuracy compared to approximately 50% for others, but it was the slowest with an 11-second median response time and performed worst on safety metrics.