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inception · API model

Mercury 3

Mercury 3 is a diffusion-based language model from Inception, and the lab's most capable model to date. It is suited for agentic workflows and real-time applications where latency compounds, such...

Context
1M
Input / 1M
$0.1
Output / 1M
$0.35
Released
Oct 16, 2026
Specifications

Mercury 3 specs

Provider
inception
Type
API model
Model ID
inception/mercury-3
Context window
1,000,000 tokens1M
Input price
$0.1per 1M input tokens
Output price
$0.35per 1M output tokens
Accepts
text
Produces
text
Released
Oct 16, 2026
Popularity
33/100position #89 in OpenRouter's weekly usage ranking
Source
OpenRouter
Overview

About Mercury 3

Mercury 3 is an API model from inception, released on Oct 16, 2026, with a context window of 1,000,000 tokens, pricing of $0.1 per million input tokens and $0.35 per million output tokens. It accepts text input and produces text output.

At listed prices, a request with 10,000 input tokens and 1,000 output tokens costs about $0.0014.

Specs are sourced from OpenRouter and were last checked on Nov 3, 2026. Always confirm current pricing and limits with the provider before production use.

Tool callingStructured outputsJSON modeReasoning
FAQ

Mercury 3 questions

What is the context window of Mercury 3?

Mercury 3 supports a context window of 1,000,000 tokens.

How much does Mercury 3 cost?

Mercury 3 is listed at $0.1 per million input tokens and $0.35 per million output tokens on OpenRouter.

When was Mercury 3 released?

Mercury 3 was published on Oct 16, 2026.

What inputs does Mercury 3 accept?

Mercury 3 accepts text input and produces text output.