Using Mercury 2.5 on OpenRouter

Implementation guide · Mercury · Inception Labs

Serverless

OpenRouter exposes Mercury 2.5 through model ID inception/mercury-2.5. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.

Last refreshed 2026-10-19. Next refresh: weekly.

Quick Start

  1. 1
    Create an account at OpenRouter and generate an API key.
  2. 2
    Use the OpenRouter SDK or REST API to call inception/mercury-2.5 — see the documentation for request format.
  3. 3
    You'll be billed $0.04/1M input, $0.15/1M output tokens. See full pricing.
API PortalDocumentationPricingModel Card

Code Examples

See OpenRouter documentation for integration details.

Pricing on OpenRouter

TypePrice (per 1M)
Input tokens$0.04
Output tokens$0.15

Capabilities

ReasoningJSON / Tool useStructured Outputs

About Mercury 2.5

Mercury 2.5 is Inception Labs' diffusion LLM GA (API id mercury-2.5). 260K context, 65,536 max output. Tunable reasoning, tool calling, structured outputs. Distinct from Mercury 2.5 Preview. Docs list $0.20/$0.75 per 1M; launch promo $0.04/$0.15 still on API/OR.

Full model details →

Model Specs

Released2026-09-08
Context260K

More Models on OpenRouter

Mercury 2Mercury 2.5 PreviewMercury 3
All models on OpenRouter →

Also available on(2)

Vercel AI Gateway$0.04/1MInception$0.20/1M
Compare all providers →

Provider

OpenRouter

OpenRouter, Inc.

New York, NY, USA