Mercury 3: Diffusion at scale

Inception Labs has introduced Mercury 3, a new diffusion-based LLM that outperforms GPT-6 Luna and Claude Haiku 5.5 in benchmarks, running 4-8x faster at over 1,000 tokens per second. Mercury 3 is 40x larger than Mercury 1, yet maintains its speed, demonstrating that text diffusion scales effectively. It offers a 1M token context, up from 260K for Mercury 2.5, and is priced at $0.20 per million input and $0.70 per million output tokens, with a 50% launch discount. Early partners are already using Mercury 3 for various latency-sensitive applications.