Is Mercury Coder available on FastMetal?

Not at the moment. Mercury 2.5, from the same lab, is available on the FastMetal API today.

What is the context window of Mercury Coder?

128,000 tokens, shared between the prompt and the response.

inception/mercury-coder

Not Available

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).

4/30/2025

128,000 tokens

Specifications

Modalities

Input

text

Output

text

Supported Parameters

frequency_penalty

max_tokens

presence_penalty

response_format

stop

structured_outputs

temperature

tool_choice

tools

top_k

top_p

Max Output Tokens

16,384

Data policy

Prompt retention: Unknown — we could not confirm
Training: Unknown — not declared

"Unknown" does not mean "safe". It means we could not confirm it.

Whether a provider trains on prompts is a declared value from our terms with them. Retention is determined from the upstream listing for every host this model can reach. Neither is guessed.

Frequently asked questions

Is Mercury Coder available on FastMetal?: Not at the moment. Mercury 2.5, from the same lab, is available on the FastMetal API today.
What is the context window of Mercury Coder?: 128,000 tokens, shared between the prompt and the response.

Models you can use on FastMetal