--effort/--reasoning-effort: no active model to apply effort

Error message

--effort/--reasoning-effort: no active model to apply effort to

What it means

Error "--effort/--reasoning-effort: no active model to apply effort to" thrown in xai-org/grok-build.

Source

Thrown at crates/codegen/xai-grok-pager/src/headless.rs:668

/// Effort is soft-ignored on a non-supporting model (still applying `-m`) but hard-fails on a genuinely unknown token.
async fn apply_headless_model_and_effort(
    acp_tx: &AcpAgentTx,
    session_id: &acp::SessionId,
    models: &ModelState,
    model_name: Option<&str>,
    effort_token: Option<&str>,
) -> anyhow::Result<()> {
    if model_name.is_none() && effort_token.is_none() {
        return Ok(());
    }

    let model_id = if let Some(name) = model_name {
        models
            .resolve_by_name_or_id(name)
            .unwrap_or_else(|| acp::ModelId::new(name))
    } else {
        models.current.clone().ok_or_else(|| {
            anyhow::anyhow!("--effort/--reasoning-effort: no active model to apply effort to")
        })?
    };

    let effort = match effort_token {
        None => None,
        // Pre-catalog: canonical tokens are already stamped; remapped menu ids can't resolve yet.
        Some(token) if models.available.is_empty() => {
            if parse_canonical_effort_token(token).is_none() {
                anyhow::bail!(
                    "--effort/--reasoning-effort: unknown effort level '{token}' \
                     (model catalog unavailable; remapped menu ids require a loaded catalog)"
                );
            }
            None
        }
        Some(token) => match models.resolve_effort_for_model(&model_id, token) {
            Ok(effort) => Some(effort),
            Err(EffortTokenError::Unsupported) => {

View on GitHub (pinned to bc7f02eddd)

When it happens

Trigger: Thrown at crates/codegen/xai-grok-pager/src/headless.rs:668 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of xai-org/grok-build@bc7f02eddd (2026-08-31). Data as JSON: /api/errors/053deaa77c38741a. Report an issue: GitHub.