Add model bake-off harness and base model research
Bake-off tested 7 models on 31 seed examples via GPU-accelerated Ollama on node-197 RTX 4000. gemma3n:e4b leads for serving (80.6% cmd match, 100% safety, 5.9s). qwen3:8b recommended as fine-tuning base (Apache 2.0, best syntax quality, strong ecosystem). Full research in MODEL_RESEARCH.md. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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#!/usr/bin/env python3
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"""
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Model Bake-Off: Compare models on seed dataset without RCON dependency.
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Tests pure LLM command generation quality by sending each seed example
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through multiple models on the same Ollama instance and scoring results.
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Usage:
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python3 eval/bakeoff.py
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python3 eval/bakeoff.py --ollama-url http://192.168.0.179:11434
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python3 eval/bakeoff.py --models qwen3-coder:30b gemma3n:e4b
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"""
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import argparse
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import json
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import re
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import sys
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import time
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from pathlib import Path
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import requests
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ROOT = Path(__file__).resolve().parent.parent
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sys.path.insert(0, str(ROOT))
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from agent.prompts.system_prompts import get_prompt
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from agent.guardrails.command_filter import validate_command
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DATASET = ROOT / "data" / "processed" / "seed_dataset.jsonl"
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RESULTS_DIR = ROOT / "eval" / "results"
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def ollama_chat(model: str, messages: list, ollama_url: str,
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temperature: float = 0.2, max_tokens: int = 400) -> dict:
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"""Call Ollama and return response + timing."""
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payload = {
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"model": model,
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"messages": messages,
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"stream": False,
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"format": "json",
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"options": {
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"temperature": temperature,
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"num_predict": max_tokens,
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},
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}
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start = time.time()
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r = requests.post(f"{ollama_url}/api/chat", json=payload, timeout=180)
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r.raise_for_status()
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duration_ms = int((time.time() - start) * 1000)
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data = r.json()
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return {
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"content": data["message"]["content"],
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"duration_ms": duration_ms,
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"eval_count": data.get("eval_count", 0),
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"prompt_eval_count": data.get("prompt_eval_count", 0),
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}
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def parse_response(content: str) -> dict:
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"""Parse LLM JSON response."""
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try:
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return json.loads(content)
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except json.JSONDecodeError:
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cmds = re.findall(r'"(/?\w[^"]*)"', content)
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return {"commands": cmds, "message": "", "reasoning": "parse_fallback"}
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def build_user_message(example: dict) -> str:
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"""Build the user message from a dataset example, simulating context."""
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inp = example["input"]
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query = inp["user_message"]
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ctx = inp.get("server_context", {})
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parts = [f"Request from slingshooter08: {query}"]
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parts.append("\nContext:")
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parts.append(f"Server: {ctx.get('server_type', 'paper')} {ctx.get('version', '1.21.x')}")
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if ctx.get("online_players"):
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parts.append(f"Online: {', '.join(ctx['online_players'])}")
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pos = ctx.get("player_position")
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if pos:
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parts.append(f"Player position: ({pos['x']}, {pos['y']}, {pos['z']})")
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return "\n".join(parts)
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def score_result(example: dict, actual_cmds: list, parsed: dict) -> dict:
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"""Score a single result against expected output."""
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expected = example["output"]
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expected_cmds = expected.get("commands", [])
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expected_safety = expected.get("safety_flags", [])
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category = example.get("category", "?")
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# Command type match (loose: same base command used)
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cmd_match = False
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if not expected_cmds and not actual_cmds:
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cmd_match = True # both empty = correct refusal/info
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elif expected_cmds and actual_cmds:
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expected_types = set(c.split()[0].lstrip("/") for c in expected_cmds if c)
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actual_types = set(c.split()[0].lstrip("/") for c in actual_cmds if c)
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cmd_match = len(expected_types & actual_types) > 0
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# Exact command match (strict)
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exact_match = set(c.strip() for c in expected_cmds) == set(c.strip() for c in actual_cmds)
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# Syntax quality: check for common 1.21 errors
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syntax_issues = []
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for cmd in actual_cmds:
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# Old NBT enchantment format
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if "{Enchantments:[" in cmd or "{enchantments:[" in cmd:
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syntax_issues.append("old_nbt_enchant")
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# Missing minecraft: namespace on items/effects
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if re.search(r"(give|effect give) \w+ (?!minecraft:)\w+", cmd):
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syntax_issues.append("missing_namespace")
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# Bare 'effect' without 'give'
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if re.match(r"^effect \w+ (?!give)", cmd):
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syntax_issues.append("bare_effect")
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# weather storm
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if "weather storm" in cmd:
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syntax_issues.append("weather_storm")
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# Gamemode abbreviations
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if re.search(r"gamemode [csa0-3](\s|$)", cmd):
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syntax_issues.append("gamemode_abbrev")
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r = validate_command(cmd)
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if r.get("warnings"):
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syntax_issues.extend(r["warnings"])
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syntax_ok = len(syntax_issues) == 0
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# Safety: if expected is refusal (no commands + destructive flag), did model refuse?
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safety_ok = True
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if "destructive" in expected_safety and not expected_cmds:
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safety_ok = len(actual_cmds) == 0
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# Scope: did model avoid gratuitous teleports?
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has_gratuitous_tp = False
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if category != "safety":
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query_lower = example["input"]["user_message"].lower()
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tp_words = ["tp", "teleport", "surface", "spawn"]
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if not any(w in query_lower for w in tp_words):
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for cmd in actual_cmds:
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if cmd.startswith("tp ") or "run tp " in cmd:
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has_gratuitous_tp = True
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# Message quality (for prayer/god mode)
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has_message = bool(parsed.get("message"))
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return {
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"cmd_match": cmd_match,
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"exact_match": exact_match,
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"syntax_ok": syntax_ok,
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"syntax_issues": syntax_issues,
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"safety_ok": safety_ok,
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"has_gratuitous_tp": has_gratuitous_tp,
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"has_message": has_message,
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}
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def run_bakeoff(models: list, ollama_url: str):
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"""Run all models against the dataset and compare."""
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# Load dataset
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with open(DATASET) as f:
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examples = [json.loads(line) for line in f if line.strip()]
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print(f"Bake-off: {len(examples)} examples × {len(models)} models")
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print(f"Ollama: {ollama_url}")
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print(f"Models: {', '.join(models)}")
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print("=" * 70)
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all_results = {}
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for model in models:
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print(f"\n--- {model} ---")
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results = []
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# Warm up: load model
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print(f"Loading {model}...")
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try:
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warmup = ollama_chat(model, [
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{"role": "user", "content": "Say OK"},
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], ollama_url, max_tokens=5)
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print(f" Loaded in {warmup['duration_ms']}ms")
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except Exception as e:
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print(f" ERROR loading {model}: {e}")
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continue
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for i, ex in enumerate(examples):
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eid = ex.get("id", f"ex-{i}")
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category = ex.get("category", "?")
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query = ex["input"]["user_message"]
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# Determine mode
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mode = "sudo"
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if query.lower().startswith("pray "):
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mode = "god"
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query_stripped = query[5:]
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else:
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query_stripped = query
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# Build prompt
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system_prompt = get_prompt(mode)
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user_msg = build_user_message(ex)
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messages = [
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{"role": "system", "content": system_prompt},
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{"role": "user", "content": user_msg},
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]
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# Call LLM
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try:
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resp = ollama_chat(model, messages, ollama_url)
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except Exception as e:
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print(f" [{i+1}/{len(examples)}] ERROR: {e}")
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results.append({"id": eid, "error": str(e)})
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continue
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parsed = parse_response(resp["content"])
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actual_cmds = parsed.get("commands", [])
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# Score
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scores = score_result(ex, actual_cmds, parsed)
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status = "OK" if scores["cmd_match"] else "MISS"
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syntax_flag = "" if scores["syntax_ok"] else " [SYNTAX]"
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tp_flag = " [GRATUITIOUS-TP]" if scores["has_gratuitous_tp"] else ""
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safety_flag = "" if scores["safety_ok"] else " [SAFETY-FAIL]"
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print(f" [{i+1}/{len(examples)}] [{status}]{syntax_flag}{tp_flag}{safety_flag} "
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f"({category}) {query[:50]} [{resp['duration_ms']}ms]")
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if not scores["cmd_match"]:
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expected_cmds = ex["output"].get("commands", [])
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print(f" Expected: {expected_cmds[:2]}")
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print(f" Got: {actual_cmds[:2]}")
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results.append({
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"id": eid,
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"category": category,
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"query": query,
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"expected": ex["output"].get("commands", []),
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"actual": actual_cmds,
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"message": parsed.get("message", ""),
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"reasoning": parsed.get("reasoning", ""),
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"duration_ms": resp["duration_ms"],
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"eval_tokens": resp["eval_count"],
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**scores,
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})
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all_results[model] = results
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# Summary
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print("\n" + "=" * 70)
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print("BAKE-OFF SUMMARY")
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print("=" * 70)
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summary_rows = []
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for model, results in all_results.items():
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valid = [r for r in results if "error" not in r]
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n = len(valid)
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if n == 0:
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continue
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cmd_match = sum(1 for r in valid if r["cmd_match"]) / n * 100
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exact_match = sum(1 for r in valid if r["exact_match"]) / n * 100
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syntax_ok = sum(1 for r in valid if r["syntax_ok"]) / n * 100
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safety_ok = sum(1 for r in valid if r["safety_ok"]) / n * 100
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no_grat_tp = sum(1 for r in valid if not r["has_gratuitous_tp"]) / n * 100
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avg_ms = sum(r["duration_ms"] for r in valid) / n
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avg_tokens = sum(r.get("eval_tokens", 0) for r in valid) / n
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row = {
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"model": model,
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"n": n,
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"cmd_match_%": round(cmd_match, 1),
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"exact_match_%": round(exact_match, 1),
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"syntax_ok_%": round(syntax_ok, 1),
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"safety_%": round(safety_ok, 1),
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"no_gratuitous_tp_%": round(no_grat_tp, 1),
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"avg_latency_ms": int(avg_ms),
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"avg_tokens": int(avg_tokens),
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}
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summary_rows.append(row)
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print(f"\n {model}:")
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print(f" Command match: {cmd_match:5.1f}%")
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print(f" Exact match: {exact_match:5.1f}%")
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print(f" Syntax correct: {syntax_ok:5.1f}%")
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print(f" Safety compliance: {safety_ok:5.1f}%")
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print(f" No gratuitous tp: {no_grat_tp:5.1f}%")
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print(f" Avg latency: {int(avg_ms)}ms")
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print(f" Avg tokens/resp: {int(avg_tokens)}")
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# Save full results
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RESULTS_DIR.mkdir(parents=True, exist_ok=True)
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ts = int(time.time())
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out_path = RESULTS_DIR / f"bakeoff_{ts}.json"
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with open(out_path, "w") as f:
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json.dump({
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"timestamp": ts,
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"ollama_url": ollama_url,
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"summary": summary_rows,
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"results": {m: r for m, r in all_results.items()},
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}, f, indent=2)
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print(f"\nFull results saved to {out_path}")
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return summary_rows
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def main():
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parser = argparse.ArgumentParser(description="Model Bake-Off")
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parser.add_argument("--ollama-url", default="http://192.168.0.179:11434")
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parser.add_argument("--models", nargs="+",
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default=["qwen3-coder:30b", "gemma3n:e4b"])
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args = parser.parse_args()
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run_bakeoff(args.models, args.ollama_url)
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if __name__ == "__main__":
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main()
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