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Mercury 2

Mercury 2 is Inception's reasoning diffusion language model. It refines tokens in parallel with tunable reasoning depth, native tool use, and a context window of 128K tokens.

Tool UseReasoning
index.ts
import { streamText } from 'ai'


const result = streamText({
  model: 'inception/mercury-2',
  prompt: 'Why is the sky blue?'
})
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Frequently Asked Questions

  • What makes Mercury 2 architecturally different from other reasoning models?

    It uses diffusion instead of autoregressive generation. Mercury 2 starts with a draft of the full response and refines all token positions simultaneously across iterative steps, rather than generating one token at a time left to right. That follows the same conceptual lineage as image and video diffusion models, applied to language.

  • How does tunable reasoning depth work in Mercury 2?

    You adjust the number of diffusion refinement steps at inference time. Fewer steps yield faster responses; more steps let the model converge on higher-quality answers. You match compute to task difficulty on each request.

  • What throughput does Mercury 2 achieve compared to autoregressive reasoning models?

    Mercury 2 generates faster than autoregressive approaches. Live throughput metrics appear on this page.

  • Is Mercury 2 compatible with OpenAI client libraries?

    Yes. Mercury 2 exposes an OpenAI-compatible API. Route existing codebases that use the OpenAI SDK to Mercury 2 through AI Gateway by swapping the base URL and model identifier.

  • What context length does Mercury 2 support?

    A context window of 128K tokens. That suits long document processing, extended conversation history, and multi-document retrieval tasks.

  • Does Mercury 2 support structured output for agent orchestration?

    Yes. Mercury 2 includes native schema-aligned JSON output and tool use. You can plug it into function-calling orchestration frameworks without extra parsing middleware.

  • How is Mercury 2 priced?

    This page lists the current rates. Multiple providers can serve Mercury 2, so AI Gateway surfaces live pricing rather than a single fixed figure.