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Inception: Mercury

inception/mercury

Released Jun 26, 2025Knowledge cutoff Jan 31, 2025128,000 context

Mercury is the first diffusion large language model (dLLM). Applying a breakthrough discrete diffusion approach, the model runs 5-10x faster than even speed optimized models like GPT-4.1 Nano and Claude 3.5 Haiku while matching their performance. Mercury's speed enables developers to provide responsive user experiences, including with voice agents, search interfaces, and chatbots. Read more in the [blog post] (https://www.inceptionlabs.ai/blog/introducing-mercury) here.

Recent activity on Mercury

Total usage per day on OpenRouter

Prompt
84
Completion
32

Prompt tokens measure input size. Reasoning tokens show internal thinking before a response. Completion tokens reflect total output length.