Mercury 2

Inception · Released March 2026

Mercury 2 is an extremely fast reasoning LLM, and the first reasoning diffusion LLM (dLLM). Instead of generating tokens sequentially, Mercury 2 produces and refines multiple tokens in parallel, achieving...

Facts and pricing

Provider

Inception

Context window

128K tokens

Input price

2.8 credits / 1M tokens ($0.25 raw)

Output price

8.3 credits / 1M tokens ($0.75 raw)

Vision (image input)

No

Tool calling

Yes

Extended reasoning

No

Credits are what Zeplik bills: 1 credit = $0.10, computed from the raw provider rate with a 1.10x margin. Raw prices shown per 1M tokens.

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What Mercury 2 is best for

• Balanced everyday work: writing, questions, brainstorming and summarization
• Tool use and agents: reliably calls functions, so it can search, run skills and drive workflows

Frequently asked questions

What is Mercury 2?

Mercury 2 is an AI model by Inception. Mercury 2 is an extremely fast reasoning LLM, and the first reasoning diffusion LLM (dLLM). Instead of generating tokens sequentially, Mercury 2 produces and refines multiple tokens in parallel, achieving...

How much does Mercury 2 cost on Zeplik?

Input tokens cost 2.8 credits per million and output tokens 8.3 credits per million (1 credit = $0.10; the raw provider rates are $0.25 and $0.75 per million). New accounts start with free credits.

How long can a conversation with Mercury 2 be?

Mercury 2 has a 128K-token context window (128,000 tokens), which covers the conversation plus any documents you attach.

Does Mercury 2 support images and tools?

Mercury 2 is text-only and supports tool calling.

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