By Shakti Tiwari — AI practitioner, systems builder
Research-based guide (sources: Ollama library, official model repos). Not financial advice. Free help at optiontradingwithai.in.
Based on research from "Best Local AI Models For Your GPU" (Cloud Codes, YouTube). Verified model specs via Ollama library + official repos.
1. Why Local AI (Stop Paying API)
Cloud APIs cost per token. Local models run free on your GPU — private, offline, no bill. The only limit: VRAM.
2. VRAM Tiers — Pick Your Model
4GB VRAM (entry laptops)
- Llama 3.2 1B — 1B params, ~1GB, fast chat
- Qwen2.5 0.5B — tiny, multilingual
- Gemma 2 2B — Google, efficient
- Phi-3 Mini — Microsoft, 3.8B
Use: basic chat, summaries.
8GB VRAM (RTX 3050/4060)
- Llama 3.1 8B — solid all-rounder
- Mistral 7B — fast, coding
- Qwen2.5 7B — multilingual
- Gemma 2 9B — strong
Use: coding, RAG, agents.
12GB VRAM (RTX 4070)
- Llama 3.1 8B (Q4) — quantized
- Qwen2.5 14B — better reasoning
- DeepSeek-R1 14B — reasoning
Use: harder tasks.
16GB VRAM (RTX 4070 Ti / 4080)
- Qwen2.5 14B — full precision
- Llama 3.1 13B — bigger context
- Mistral Small — code
Use: production-ish.
24GB VRAM (RTX 4090 / 3090)
- Llama 3.1 70B (Q4) — near-GPT-4
- Qwen2.5 32B — strong
- DeepSeek-R1 32B — reasoning beast
- Kimi K3 (if weights) — 1M context
Use: serious work.
3. Install (verify via Ollama)
curl -fsSL https://ollama.com/install.sh | sh
ollama pull llama3.1:8b
ollama run qwen2.5:14b
ollama run deepseek-r1:14b
Ollama library (verified live): deepseek-r1, gemma3, qwen3, mistral, llama3, phi3, qwen.
4. Quantization (Fit Bigger Models)
- Q4 = 4-bit, ~half size, slight quality loss
- Q8 = 8-bit, near-full
- FP16 = full, needs more VRAM
Example: Llama 70B FP16 = 140GB VRAM. Q4 = ~40GB. So 24GB card runs Q4.
5. Use-Cases
- Private chat — no data leaves
- Coding — local assistant
- RAG — docs offline
- Agents — Hermes backend
- Translate — offline
- Summarize — local
- Fine-tune — small
- Embeddings — vector store
6. CPI / Cost
$0. No tokens, no API. Only electricity.
Cloud 4o = $0.015/1K out. Local = $0.
7. vs Cloud
- Cloud: better quality, costs
- Local: free, private, limited by GPU
Hybrid: local default, cloud for hard.
8. My Stack
Hermes + Ollama (Qwen3 14B local) + cloud for research. Phone (Termux) runs 7B.
9. Cost Control
- Quantize (Q4)
- Smaller model for speed
- Batch
10. Risks
- Hardware limit
- Less multimodal (some)
FAQ
Q: Free?
A: Yes, fully local.
Q: Safe?
A: Private.
Q: Advice?
A: Education.
About
Shakti Tiwari. Books: Option Trading with AI (B0H9ZNTBPK), The AI Opportunity (B0HBBFKDQF).
🌐 optiontradingwithai.in
📧 shaktitiwari715@gmail.com
🐦 X | ▶️ YouTube | 💼 LinkedIn | 💻 GitHub | 📝 Dev.to
Disclaimer: Not financial advice.
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