🦊 Fox1.3 - Small but Mighty

📊 Fox1.3 vs Claude Opus 4.6

Metric	Fox1.3 v9	Opus 4.6
Parameters	900M	~120B
Speed (CPU)	52 tok/s	N/A (GPU only)
Size	~1 GB	~80 GB
RAM Required	2.5 GB	~256 GB
Cost	Free	$5-25/1M
Web Search	✅ (via OpenClaw)	❌ (must memorize)
Runs on CPU	✅	❌
Internet Required	❌	✅

Fox1.3 is 88x smaller than Opus 4.6, runs on CPU — and when it doesn't know something, it searches the web in real-time. Opus cannot do that.

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🏆 Performance Context

On our custom 10-question benchmark (reasoning focus):

Model	Score	Size
Fox1.3 v9	100% (10/10)	~1 GB

On standardized MMLU benchmark (100 questions, real test):

Model	MMLU Score	Size
GPT-4.5	~95%	~350 GB
Claude Opus 4.6	~95%	~80 GB
Llama 4 Maverick	~90%	~100 GB
Fox1.3	~40%	~1 GB

Estimated Leaderboard Rank: ~#260-300 out of ~400 models

Why so low? MMLU tests broad knowledge across 57 subjects. Fox1.3 is a 900M-1.5B param model — it's not designed to memorize all of human knowledge. LoRA training can't fix this: MMLU needs breadth, and breadth requires scale. This is the honest trade-off for being 100x smaller.

Fox1.3's strength is targeted reasoning + web search — not memorizing encyclopedia entries.

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Why Smaller is Better

The AI industry is obsessed with scaling models to hundreds of billions of parameters — requiring massive GPU clusters, hundreds of gigabytes of RAM, and costing millions per month to run. Fox1.3 proves there's a better way.

The Case for Compact Models

• 🚀 Speed: 52+ tokens/sec on CPU — faster than models 100x its size
• 💰 Cost: 100% free to run, forever. No API bills, no subscription fees
• 🔌 Offline: Runs locally on your laptop, Raspberry Pi, or desktop
• 🌍 Energy: Uses a fraction of the power — better for the environment
• 🔒 Private: Your data never leaves your machine
• ⚡ Low Latency: Real-time responses, no waiting for API rate limits

Fox1.3 proves that intelligent AI doesn't need to be massive, expensive, or power-hungry.

🔍 How Fox1.3 Stays Smart While Staying Small

Fox1.3 combines two strategies that eliminate the need for massive model sizes:

1. Efficient Training — LoRA fine-tuning on targeted reasoning (exception logic, math word problems). Only what's hard gets stored in the weights.
2. Web Search Integration — For real-time or factual queries, fox1.3 uses OpenClaw's built-in web search. Facts it hasn't memorized? Just look them up.

The result: A 900MB model with effectively unlimited knowledge. It doesn't need to store answers — it knows how to find them.

This is how small models beat big ones: not by memorizing more, but by knowing how to look things up.

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✨ Performance

• ✅ OpenClaw compatible
• ✅ Runs on CPU (2.5GB RAM minimum)
• ✅ ~52 tokens/sec inference speed
• ✅ 16K context window
• ✅ Fully local — no internet required
• ✅ Web search via OpenClaw for real-time knowledge
• ✅ Privacy-first: data never leaves your machine

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🚀 Usage

Terminal / Command Line

# Run the model (single prompt)
ollama run fox1.3 "Your question here"

# Check if model is installed
ollama list

# Pull the model from HuggingFace
ollama pull teolm30/fox1.3

# Start interactive chat
ollama run fox1.3

# Example prompts to try:
# "If all birds can fly and penguins are birds, can penguins fly?"
# "A bat and ball cost $1.10. The bat costs $1.00 more than the ball. How much is the ball?"
# "Write a Python function to check if a number is even"

Python API

import requests

response = requests.post("http://localhost:11434/api/generate", json={
    "model": "fox1.3",
    "prompt": "Your question here",
    "stream": False
})
print(response.json()["response"])

Via Ollama Python Library

import ollama

response = ollama.chat(model='fox1.3', messages=[
    {'role': 'user', 'content': 'Your question here'}
])
print(response['message']['content'])

Via OpenClaw (Recommended for Web Search)

Fox1.3 works best through OpenClaw, which adds web search capability:

# Start OpenClaw
openclaw start

# The model is automatically available through the OpenClaw interface

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📈 Model Evolution

Version	Custom Test	MMLU Score	Key Changes
fox1.3-v1	90%	~40%	Initial release
fox1.3-v3	100%	—	Best overall (model runner issue)
fox1.3-optimized	70%	—	Prompt-tuned
fox1.3-v7	90%	40%	Penguin logic fixed (0.5B)
fox1.3-v9	95%	40%	Riddle fixed (0.5B)
fox1.3-v10	—	35%	1.5B + 25 examples
fox1.3-v11	—	39%	1.5B + 100 examples

Note: Larger model (1.5B) doesn't improve MMLU — LoRA training can't add broad knowledge. MMLU requires full pre-training scale.

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🔬 Technical Details

• Base Model: Qwen2.5-0.5B (via Unsloth 4-bit)
• Training Method: LoRA fine-tuning (r=16, alpha=16)
• Training Data: 20 examples focused on exception logic + math reasoning
• Context Length: 16,384 tokens
• Quantization: Q4_K_M (via Unsloth/bitsandbytes)
• Hardware: Runs on RTX 3050 (6GB) or CPU

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🔑 Key Improvements in v7

The v7 update specifically fixes the exception logic problem that plagued earlier versions:

Before v7:

"Can penguins fly?" → "Yes" ❌

After v7:

"Can penguins fly?" → "The answer is no. Penguins are an exception — they are birds but cannot fly." ✅

This shows how targeted LoRA training can fix specific reasoning failures without making the model bigger.

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📊 Benchmark Results (April 4, 2026)

10-Question Test

Test	Result	Details
Math: 2 + 2	✅	"The answer is 4"
Math: 15 + 27	✅	"42."
Math: 100 / 4	✅	"25."
Math: 7 * 8	✅	"56."
Logic: Cat/mammal	✅	"yes"
Logic: Penguin exception	✅	"The answer is no. Penguins are an exception — they are birds but cannot fly."
Knowledge: Capital of France	✅	"Paris"
Knowledge: Largest planet	✅	"Jupiter"
Reasoning: $1.10 riddle	✅	"The ball costs 5 cents."
Code: Even function	✅	"def is_even(n): return n % 2 == 0"

Final Score: 10/10 (100%)

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Fox1.3 — because the best AI isn't the biggest. It's the one you can actually use.