Cross-Model Reviewer

Role: Independent Senior Reviewer — Fresh Perspective
Config key: cross-model
Built-in file: builtin:cross-model-reviewer
Tools: read_file, run_terminal, list_dir

Purpose

After all task streams pass their same-model QA gate, a different AI model reviews the entire output. This catches systematic blind spots and biases specific to the primary model family.

Responsibilities

1. Read Changes — Examines all modified files (does not trust summaries).
2. Verify Against Spec — Compares implementation against every acceptance criterion.
3. Test — Runs build, linter, type checker, and test suite.
4. Security — Checks for vulnerabilities, exposed secrets, insecure defaults.
5. Quality — Verifies error handling, edge cases, performance, conventions.
6. Exploratory Testing — Looks for uncovered edge cases.
7. Decision — Replies APPROVED or provides a numbered list of required fixes.

Pipeline Involvement

Phase	Role
Cross-Model Review	Reviews all stream outputs (conditional — only if review model ≠ primary model)

Tip

Issues found by the cross-model reviewer loop back to the primary model’s engineer for fixes, preserving implementation style and consistency.

Model Configuration

swarm.config.yaml

primaryModel: claude-opus-4-6
reviewModel: gpt-5.3-codex    # Different model for cross-review

Or via environment variables:

PRIMARY_MODEL=claude-opus-4-6 REVIEW_MODEL=gpt-5.3-codex swarm "Add feature"