Mercury 3

Inception

A diffusion-based language model for reasoning, tool use, and latency-sensitive agentic workflows, served through Inception's API.

Specs

Model

Family
Mercury
Variant
3
Weights
Proprietary

Limits

Context
1,000,000 tokens
Max output
131,072 tokens

Modalities

Input
Text
Output
Text

Pricing

Input
$0.1 / 1M
Output
$0.35 / 1M
Cache read
$0.01 / 1M

Capabilities

Reasoning
Yes
Reasoning control
Effort levels
Tool calling
Yes
Attachments
No

Dates

Released
16 Oct 2026
Updated
20 Oct 2026

Diffusion at Scale: Introducing Mercury 3

Mercury 3 is the most capable diffusion LLM released to date. It outperforms GPT-6 Luna and Claude Haiku 5.5 while running 4–8x faster at 1,000+ tokens per second.

Inception Team
inceptionlabs.ai

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