inception/mercury-2.5Mercury 2.5 is Inception Labs’s proprietary AI model, released Sep 8, 2026. It costs $0.20/M input and $0.75/M output tokens, and handles a 260K-token context window.
Mercury 2.5 is the fastest reasoning LLM, and the latest diffusion LLM (dLLM) from Inception.
Scores on standardized evaluations. Higher is better — and rank shows where Mercury 2.5 lands among all models tracked on Model Beat.
Frontier of human expert knowledge
Scientific research coding
Mercury 2.5 is the fastest reasoning LLM, and the latest diffusion LLM (dLLM) from Inception.
Mercury 2.5 is an AI model developed by Inception Labs, released Sep 8, 2026.
Mercury 2.5's list price from Inception Labs is $0.20 per million input tokens and $0.75 per million output tokens.
Mercury 2.5 supports a context window of up to 260K tokens.
On standardized evaluations tracked by Epoch AI, Mercury 2.5 scores 38.5% on SciCode, 11.8% on Humanity's Last Exam.
Mercury 2.5 is a proprietary model (API access), available through its provider's API rather than as a downloadable open-weight model.
Benchmark data from Epoch AI (CC BY) and Artificial Analysis; pricing, specs & descriptions from OpenRouter. Data updated Oct 29, 2026.