Inception: Mercury Coder

InceptionID: inception/mercury-coder

Mercury Coder 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 Claude 3.5 Haiku and GPT-4o Mini while matching their performance. Mercury Coder's speed means that developers can stay in the flow while coding, enjoying rapid chat-based iteration and responsive code completion suggestions. On Copilot Arena, Mercury Coder ranks 1st in speed and ties for 2nd in quality. Read more in the [blog post here](https://www.inceptionlabs.ai/blog/introducing-mercury).

Pricing per 1M Tokens

Input (Prompt)$0.25
Output (Completion)$0.75
Cache Read$0.02
Cache WriteFree
ImageN/A

Specifications

Context Length128K
Max Output Tokens32K
Input ModalitiesText
Output ModalitiesText
TokenizerOther
Instruct TypeN/A
Top Provider Context128K
Top Provider Max Output32K
ModeratedNo

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vs Inception: Mercury 2vs Inception: Mercury

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Inception: Mercury 2
Input$0.25
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Inception: Mercury
Input$0.25
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Last updated: March 23, 2026

First tracked: March 23, 2026