PriceIndex
IN

Mercury 2.5

mercury-2.5
APIProvider site

Mercury 2.5 is the fastest reasoning LLM, and the latest diffusion LLM (dLLM) from Inception. Instead of generating tokens sequentially, Mercury 2.5 produces and refines multiple tokens in parallel, achieving... Built by Inception.

Prices updated

Input price

$0.04

per 1M tokens · Standard

Output price

$0.15

per 1M tokens · Standard

Input limit

260K

tokens

Output limit

66K

tokens

Input formats

TextImageVideoAudioPDF

Output formats

TextImageVideoAudioPDF
Compare

Mercury 2.5 price history

2 price records since 10/8/2026

Mercury 2.5 cost calculator

Input20M tokens
Output5M tokens

$1.55/month

Standard pricing

    Overview

    What is Mercury 2.5?

    Mercury 2.5 is a text & reasoning model from Inception. Mercury 2.5 is the fastest reasoning LLM, and the latest diffusion LLM (dLLM) from Inception. Instead of generating tokens sequentially, Mercury 2.5 produces and refines multiple tokens in parallel, achieving... Its 260K context window and $0.04 input price make it a candidate for cost-sensitive, high-throughput applications.

    Content workflowsClassification

    Rates

    Mercury 2.5 pricing

    Pricing is based on token usage. Provider-specific caching, batch, regional, and tool charges may affect the final cost.

    Input · Standard

    $0.04

    Per 1M tokens

    Cached input · Standard

    $0.0040

    Per 1M tokens

    Capabilities

    Mercury 2.5 Tools

    Tools available when using Mercury 2.5 through supported provider APIs.

    Function calling

    Supported

    Structured outputs

    Supported

    JSON mode

    Supported

    Reasoning

    Supported

    Built-in web search

    Not supported

    Log probabilities

    Not supported

    Deterministic seed

    Not supported

    Parallel tool calls

    Not supported

    Prompt caching

    Supported

    Strengths and limitations

    Strengths

    • Low input cost at $0.04 per million tokens suits high-volume workloads.
    • 260K context supports large documents, repositories and extended conversations.
    • Supports text & reasoning workloads in one model.

    Limitations

    • Generated tokens cost 4× more than input tokens, which matters for verbose responses.
    • Large context capacity does not guarantee consistent retrieval across the entire prompt.
    • Arena Elo and MMLU-Pro are directional; test accuracy, latency and reliability on your own workload before committing.

    Arena Elo, MMLU-Pro and pricing figures are illustrative; validate current vendor terms before purchase.

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    Frequently asked questions about Mercury 2.5

    Mercury 2.5 is a text & reasoning model from Inception. Mercury 2.5 is the fastest reasoning LLM, and the latest diffusion LLM (dLLM) from Inception. Instead of generating tokens sequentially, Mercury 2.5 produces and refines multiple tokens in parallel, achieving...