Skip to main content

Beam 1.0 API

reflection/beam-1.0/chat

Beam 1.0 from Reflection supports coding and long-running tool workflows. This chat API accepts text, provides a 1,048,576-token input budget and accepts max_tokens up to 943,718. Stream Beam 1.0’s text as it arrives, or let a function-call result supply the evidence for the next step in long coding sessions with Beam 1.0.

Input $1Output $3per 1 million tokensCached input $0.10
Run model

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
    $1 / 1 million tokens
    Cached input
    $0.10 / 1 million tokens
    Output
    $3 / 1 million tokens
    Context
    1,048,576
    Max output
    943,718

    $1/3per 1 million tokens · input / output

    basic

    Give Beam 1.0 the issue, the relevant modules and the failing test output together. Its text-only input budget is 1,048,576 tokens; that space is useful for retaining the implementation around a bug, rather than giving the agent only a stack trace.

    • 1024
  • Input types
    Text
    Output types
    Text
    Input
    $1 / 1 million tokens
    Cached input
    $0.10 / 1 million tokens
    Output
    $3 / 1 million tokens
    Context
    1,048,576
    Max output
    943,718

    $1/3per 1 million tokens · input / output

    tool-step

    Ask for the changed code and a verification command. Count reasoning inside max_tokens, check the finish reason and run the proposed tests before merging. Reflection’s benchmark scores describe its own evaluation setup; your repository determines whether the patch works.

    • 1024
    • auto

This example starts at Input $1 / Output $3 per 1 million tokens. The Playground updates the estimate when you change the settings.