Mercury 3 Is Four to Eight Times Faster. It Loses Where Agents Need It Most.
Inception's Mercury 3 is a diffusion language model that writes a whole answer at once instead of word by word, reaching 1,068 tokens per second. It leads 8 of 12 rows in Inception's own benchmark table, but loses on agentic coding and long-context recall, and its list price for output is higher than Claude Haiku 5.5 and GPT-6 Luna.