# Inception's Mercury 3 diffusion model claims to beat GPT-6 Luna and Claude Haiku 5.5 at a fraction of the wait

> Source: <https://the-decoder.com/inceptions-mercury-3-diffusion-model-claims-to-beat-gpt-6-luna-and-claude-haiku-5-5-at-a-fraction-of-the-wait/>
> Published: 2026-10-21 14:45:45+00:00

Inception says Mercury 3 is the most capable diffusion language model released so far. The company claims it runs four to eight times faster than GPT-6 Luna and Claude Haiku 5.5 and beats both in eight of 12 benchmarks. There are no independent tests yet.

The article [Inception's Mercury 3 diffusion model claims to beat GPT-6 Luna and Claude Haiku 5.5 at a fraction of the wait](https://the-decoder.com/inceptions-mercury-3-diffusion-model-claims-to-beat-gpt-6-luna-and-claude-haiku-5-5-at-a-fraction-of-the-wait/) appeared first on [The Decoder](https://the-decoder.com).