openai/codex · error · CodexErr

Selected model is at capacity. Please try a different model.

Error message

Selected model is at capacity. Please try a different model.

What it means

Error "Selected model is at capacity. Please try a different model." thrown in openai/codex.

Source

Thrown at codex-rs/protocol/src/error.rs:131

    /// Returned by run_command_stream when the user pressed Ctrl-C (SIGINT). Session uses this to
    /// surface a polite FunctionCallOutput back to the model instead of crashing the CLI.
    #[error("interrupted (Ctrl-C). Something went wrong? Hit `/feedback` to report the issue.")]
    Interrupted,
    /// Unexpected HTTP status code.
    #[error("{0}")]
    UnexpectedStatus(UnexpectedResponseError),
    /// Invalid request.
    #[error("{0}")]
    InvalidRequest(String),
    /// Multiple registered tools share the same effective name.
    #[error("duplicate tool: {0}")]
    ToolCollision(String),
    /// Invalid image.
    #[error("Image poisoning")]
    InvalidImageRequest(),
    #[error("{0}")]
    UsageLimitReached(UsageLimitReachedError),
    #[error("Selected model is at capacity. Please try a different model.")]
    ServerOverloaded,
    #[error("{message}")]
    CyberPolicy { message: String },
    #[error("{message}")]
    MisalignmentPolicyViolation { message: String },
    #[error("{0}")]
    ResponseStreamFailed(ResponseStreamFailed),
    #[error("{0}")]
    ConnectionFailed(ConnectionFailedError),
    #[error("Quota exceeded. Check your plan and billing details.")]
    QuotaExceeded,
    #[error(
        "To use Codex with your ChatGPT plan, upgrade to Plus: https://chatgpt.com/explore/plus."
    )]
    UsageNotIncluded,
    #[error("We're currently experiencing high demand, which may cause temporary errors.")]
    InternalServerError,
    /// Retry limit exceeded.

View on GitHub (pinned to 339751715c)

When it happens

Trigger: Thrown at codex-rs/protocol/src/error.rs:131 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of openai/codex@339751715c (2026-08-25). Data as JSON: /api/errors/fe38bec3911bffe7. Report an issue: GitHub.