This model is 15 months old. A newer version of it has since shipped: Mercury 2.5 Preview (2026-08-31). The details below are still accurate for this model — it just is not what we would recommend today.
Mercury
Inception🇺🇸 United States
The first commercial-scale diffusion large language model (dLLM). Generates text by refining many tokens in parallel instead of one at a time, reaching 1,000+ tokens/sec. Now legacy — superseded by Mercury 2.
Context window32K tokens
Version History
mercury-launchmajor
Mercury launches. The first commercial-scale diffusion large language model (dLLM). Generates text by refining many tokens in parallel instead of one at a time, reaching 1,000+ tokens/sec. Now legacy — superseded by Mercury 2.