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Mercury 3 API

inception/mercury-3/chat

Mercury 3 from Inception supports responsive text reasoning and agent interactions. This chat API accepts text, provides a 1,000,000-token input budget and accepts max_tokens up to 131,072. Stream Mercury 3’s text as it arrives, or let a function-call result supply the evidence for the next step in fast text turns with Mercury 3.

Input $0.20Output $0.70per 1 million tokensCached input $0.02
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Workbench

These examples were written for this endpoint. Replace the prompt and sample media URLs with your own accessible inputs, then check the current quote and model availability before submitting.

  • Input types
    Text
    Output types
    Text
    Input
    $0.20 / 1 million tokens
    Cached input
    $0.02 / 1 million tokens
    Output
    $0.70 / 1 million tokens
    Context
    1M
    Max output
    131,072

    $0.20/0.70per 1 million tokens · input / output

    basic

    Mercury 3 uses diffusion to refine text in parallel. For a support reply, send the customer’s question, the relevant policy excerpt and the desired next action as text; this endpoint does not accept image, video or audio parts.

    • 1024
  • Input types
    Text
    Output types
    Text
    Input
    $0.20 / 1 million tokens
    Cached input
    $0.02 / 1 million tokens
    Output
    $0.70 / 1 million tokens
    Context
    1M
    Max output
    131,072

    $0.20/0.70per 1 million tokens · input / output

    tool-step

    Mercury 3 can propose a function call; your application checks the arguments and performs it. Return the result with the matching tool_call_id so the next quick turn can use evidence from the operation. Review the final answer against the supplied policy before showing it to a customer.

    • 1024
    • auto

This example starts at Input $0.20 / Output $0.70 per 1 million tokens. The Playground updates the estimate when you change the settings.