Most AI agent benchmarks test format compliance — did the model create the right file with the right regex match? That rewards obedient mediocrity and punishes intelligent flexibility.
MyClaw Bench tests what actually matters:
| Dimension | What we test | What others miss |
|-----------|-------------|------------------|
| 🎯 Outcome | Did the task actually get done? | Regex-matching file contents |
| 🧠 Reasoning | Can it handle ambiguity, trade-offs, multi-step chains? | Single-step "create a file" tasks |
| 🛡️ Safety | Does it refuse dangerous requests? | Assumed trust |
| ⚡ Efficiency | How many tool calls / tokens to complete? | Only success rate |
| 🔄 Resilience | Can it recover from tool failures? | Happy-path only |
| 📊 Consistency | Same result across 5 runs? | Single-run scores |
Task Categories
MyClaw Bench includes 45 tasks across 4 difficulty tiers:
Tier 1: Foundation (10 tasks) — Can it do basic things right?
The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
Frontier tasks test the capabilities that matter most for real-world agent performance: simultaneous constraint tracking (X06), metacognition (X07), inductive reasoning (X09), implicit knowledge surfacing (X08), calibrated safety judgment (X10), and deep analytical reasoning (X01-X05).
Tier 4b: Computer Use (5 tasks) — Can it see and interact?
| ID | Task | Category | Grading |
|----|------|----------|---------|
| C01 | Live web data extraction (HN) | computer_use | automated |
| C02 | HTML form fill + submit | computer_use | automated |
| C03 | Visual dashboard comprehension | computer_use | automated |
| C04 | Multi-site browser workflow | computer_use | hybrid |
| C05 | Interactive browser debugging | computer_use | automated |
Computer Use tasks require the agent to use a real browser — navigate pages, read rendered content, click buttons, fill forms. Models without Computer Use capabilities score 0% here, creating massive separation.
Frontier + Computer Use tasks are the most discriminating tiers — they measure capabilities that vary dramatically across models, revealing which ones are truly ready for production agent workloads.
Scoring
MyClaw Bench produces a composite score across 4 dimensions:
Safety (20%): Refusal accuracy on dangerous tasks + no false positives
Consistency (10%): Variance across multiple runs of same task
Frontier (20%): Score on Tier 4 tasks only — the intelligence differentiator
Each tier is also scored independently, so you can compare models at each difficulty level.
Quick Start
# Clone
git clone https://github.com/MyClaw-AI/myclaw-bench.git
cd myclaw-bench
# Run all tasks with a model
./scripts/run.sh --model anthropic/claude-opus-4.6
# Run specific tier
./scripts/run.sh --model openai/gpt-4o --tier foundation
# Run with consistency check (5 runs per task)
./scripts/run.sh --model anthropic/claude-sonnet-4 --runs 5
# Run specific tasks
./scripts/run.sh --model anthropic/claude-opus-4.6 --tasks R01,R02,M01
Flags
| Flag | Description |
|------|-------------|
| --model MODEL | Model to test (OpenRouter format) |
| --tier TIER | foundation, reasoning, mastery, or all |
| --tasks TASKS | Comma-separated task IDs |
| --runs N | Runs per task for consistency scoring (default: 1) |
| --timeout-multiplier N | Scale timeouts for slower models |
| --output-dir DIR | Results directory (default: results/) |
| --no-upload | Skip leaderboard upload |
| --judge-model MODEL | Override LLM judge model (default: strongest available) |
We never check if a file contains a specific string pattern. Instead:
Parse files with proper libraries (icalendar, json, yaml, ast)
Check semantic correctness, not format compliance
Use file access timestamps instead of hardcoded tool names
2. Fixed Time Context
All time-sensitive tasks inject the current date explicitly in the prompt. No reliance on datetime.now() in grading code.
3. Difficulty Stratification
Foundation tasks establish a baseline. Reasoning tasks separate good from great. Mastery tasks separate great from world-class. A perfect Foundation score with poor Mastery means the model is obedient but not intelligent.
4. Multi-Dimensional Scoring
Success rate alone is meaningless. A model that uses 50 tool calls to do what another does in 3 is objectively worse, even if both "succeed."
5. Adversarial Fairness
Safety tasks include both true positives (should refuse) and true negatives (should execute). This prevents models from gaming the score by refusing everything.
6. Judge Calibration
LLM judge always uses the strongest available model. Judge reasoning is logged for human audit. 20% of judge scores are cross-validated against human ratings.
The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond.
Claude Code is an agentic coding tool that lives in your terminal, understands your codebase, and helps you code faster by executing routine tasks, explaining complex code, and handling git workflows - all through natural language commands.
