Free vs Paid AI Models for Cybersecurity
Practical benchmarks across 10 security tasks with India-specific test inputs. Which free model can replace paid AI — and when does paid actually matter?
Security Task Performance — Rated 1-5
| Security Task | Llama 3.2 8B Free (Groq/Ollama) |
Llama 3.1 70B Free (Groq limited) |
Mistral 7B Free (Mistral.ai) |
Phi-3.5 Mini Free (Ollama local) |
Gemini Flash Free (AI Studio) |
GPT-4o Paid ($20/mo) |
Claude Sonnet Paid ($20/mo) |
|
|---|---|---|---|---|---|---|---|---|
| Windows event log triage | ★★★★★ 4/5 | ★★★★★ 5/5 | ★★★★★ 4/5 | ★★★★★ 3/5 | ★★★★★ 4/5 | ★★★★★ 5/5 | ★★★★★ 5/5 | Llama 70B matches paid for structured log analysis |
| SIEM alert classification | ★★★★★ 4/5 | ★★★★★ 5/5 | ★★★★★ 4/5 | ★★★★★ 3/5 | ★★★★★ 4/5 | ★★★★★ 5/5 | ★★★★★ 5/5 | Strong free options — 70B competitive with paid |
| KQL / SPL rule writing | ★★★★★ 3/5 | ★★★★★ 4/5 | ★★★★★ 3/5 | ★★★★★ 2/5 | ★★★★★ 4/5 | ★★★★★ 5/5 | ★★★★★ 5/5 | Paid models produce fewer hallucinated field names |
| Sigma rule generation | ★★★★★ 3/5 | ★★★★★ 4/5 | ★★★★★ 4/5 | ★★★★★ 2/5 | ★★★★★ 3/5 | ★★★★★ 5/5 | ★★★★★ 5/5 | Mistral 7B surprisingly good for Sigma. Paid better. |
| Threat report summarisation | ★★★★★ 3/5 | ★★★★★ 4/5 | ★★★★★ 3/5 | ★★★★★ 2/5 | ★★★★★ 5/5 | ★★★★★ 5/5 | ★★★★★ 5/5 | Gemini Flash excellent — long context handles full reports |
| CERT-In regulatory context | ★★★★★ 2/5 | ★★★★★ 3/5 | ★★★★★ 2/5 | ★★★★★ 2/5 | ★★★★★ 3/5 | ★★★★★ 4/5 | ★★★★★ 4/5 | Gap is real — free models have less India regulatory depth |
| Security policy drafting | ★★★★★ 3/5 | ★★★★★ 5/5 | ★★★★★ 4/5 | ★★★★★ 2/5 | ★★★★★ 4/5 | ★★★★★ 5/5 | ★★★★★ 5/5 | Llama 70B competitive. Shorter policies are fine with 8B. |
| IOC extraction from text | ★★★★★ 4/5 | ★★★★★ 5/5 | ★★★★★ 4/5 | ★★★★★ 3/5 | ★★★★★ 4/5 | ★★★★★ 5/5 | ★★★★★ 5/5 | Near-parity — all models handle IOC extraction well |
| Executive incident briefing | ★★★★★ 4/5 | ★★★★★ 5/5 | ★★★★★ 4/5 | ★★★★★ 3/5 | ★★★★★ 5/5 | ★★★★★ 5/5 | ★★★★★ 5/5 | Free models good enough for most briefings |
| Complex multi-step investigation | ★★★★★ 2/5 | ★★★★★ 4/5 | ★★★★★ 3/5 | ★★★★★ 2/5 | ★★★★★ 3/5 | ★★★★★ 5/5 | ★★★★★ 5/5 | Paid models significantly better for complex reasoning chains |
| Average | 3.2/5 | 4.4/5 | 3.5/5 | 2.4/5 | 3.9/5 | 4.9/5 | 4.9/5 |
Task-by-Task Analysis — When Free is Good Enough
| Task | Free Model Verdict | Best Free Choice | When to Use Paid |
|---|---|---|---|
| Log triage (Windows/Linux/Cloud) | Free is good enough | Llama 3.2 8B via Groq | Only if you need real-time streaming or handling extremely complex multi-stage attack sequences |
| SIEM rule writing (KQL/SPL) | Free mostly sufficient — verify output | Llama 3.1 70B | When writing rules for production Sentinel/Splunk — paid models hallucinate field names less |
| CERT-In regulatory guidance | Free has gaps — use with caution | Gemini Flash | When regulatory accuracy matters (compliance docs, board reporting) — supplement with human expert review |
| Threat report summarisation | Free is excellent | Gemini Flash (long context) | Almost never — Gemini Flash free tier handles full reports as well as paid models |
| Security policy drafting | Llama 70B matches paid | Llama 3.1 70B via Groq | Only for very complex multi-regulation policies requiring deep India-specific legal accuracy |
| Incident executive briefing | Free is good enough | Llama 3.2 8B or Gemini Flash | Rarely — free models communicate clearly for management briefings |
| Complex investigation reasoning | Free falls short | Llama 3.1 70B (best free option) | Yes — for complex multi-step attack path analysis, paid models are meaningfully better |
| IOC extraction from text | Free is excellent — near parity | Any model works well | Never — all free models handle structured IOC extraction from text well |
| Sigma rule generation | Free is adequate | Mistral 7B | When deploying Sigma to production — paid models produce fewer structural errors |
| Policy gap analysis (Indian regs) | Free is limited | Gemini Flash | For formal compliance assessments — Indian regulatory knowledge depth is still better in paid models |
Privacy & Data Sovereignty — Critical for Indian Regulated Entities
| Model / Platform | Data Goes To | Training on Your Data? | RBI/SEBI Compliant? | BFSI Recommendation |
|---|---|---|---|---|
| ChatGPT / GPT-4o | OpenAI servers — USA | No (by default with API) | No — data leaves India | Do not use for payment data, trade data, or customer PII |
| Claude (Anthropic) | Anthropic servers — USA | No (API usage) | No — data leaves India | Do not use for regulated financial data |
| Gemini / Google AI Studio | Google servers — USA/global | May be used for improvement unless opted out | No — data leaves India | Opt out of data usage. Still not for regulated data. |
| Groq (Llama 3) | Groq servers — USA | No (per ToS) | No — data leaves India | Use only for non-sensitive security research and testing |
| Mistral AI | Mistral servers — EU | No (per ToS) | Better but still not India | Marginally better for EU-regulated entities. Not for Indian financial data. |
| HuggingFace Inference API | HuggingFace servers — USA | Potentially — check model card | No — data leaves India | Use only for non-sensitive tasks. Not for regulated data. |
| Ollama (local) | Your own hardware — stays in India | No — model runs offline | Yes — zero egress | Recommended for all regulated Indian entities. No data leaves your network. |
| vLLM (local) | Your own hardware — stays in India | No — model runs offline | Yes — zero egress | Recommended for high-concurrency regulated deployments. |
What data is safe to send to cloud AI?
Cost Analysis — Free vs Paid for Indian SOC Teams
| Option | Monthly Cost | Requests / Day | Best For |
|---|---|---|---|
| Groq free (Llama 3.2 8B) | ₹0 | 14,400 (8B) / 6,000 (70B) | Individual analyst, light SOC use |
| Google AI Studio (Gemini Flash) | ₹0 | 1,500 | Long-document threat reports, CERT-In advisories |
| Mistral free tier | ₹0 | Rate limited | Structured output, policy drafts |
| Ollama on existing hardware | ₹0 (power cost only) | Unlimited | Teams with GPU — unlimited queries |
| Ollama + GPU workstation (RTX 4090) | ~₹1,200/month (EMI on ₹1.6L setup) | Unlimited | Small team (1-5 analysts). Best cost per query for moderate use. |
| Ollama + team server (A100) | ~₹8,000/month (EMI on ₹35L setup) | Unlimited, 20+ concurrent | Medium team (10-20 analysts). Production BFSI deployment. |
| ChatGPT Plus (GPT-4o) | ₹1,500-2,000/month per user | Limited (conversation rate) | Individual power user needing highest quality |
| Claude Pro | ₹1,500-2,000/month per user | Limited | Individual power user — best for long-form writing |
| OpenAI API (GPT-4o) | Pay per token — ₹0.004/1K tokens input | Unlimited (billed) | Teams wanting GPT-4 quality without per-user subscription |
| Anthropic API (Claude Sonnet) | Pay per token — ₹0.002/1K tokens input | Unlimited (billed) | Teams wanting Claude quality. Powers tools on this site. |
The Verdict — What to Use and When
Start with Groq free tier (Llama 3.2 8B) for daily triage. Add Gemini Flash free for long threat reports. Total cost: ₹0. For regulated Indian entities: install Ollama on your analyst laptop.
Deploy Ollama on a shared GPU workstation (RTX 4090, ~₹1.6L one-time). Unlimited queries, all stays on-premise. Install Open WebUI so all analysts use browser-based chat. Total ongoing cost: electricity.
Dedicated Ollama/vLLM server with NVIDIA A100 or 2x RTX 3090. Llama 3.1 70B for quality-sensitive tasks. Serves 20+ analysts simultaneously. Air-gapped from internet. RBI/SEBI compliant.
Groq free tier for fast experimentation. Ollama locally for sensitive engagement data. GPT-4o or Claude for high-complexity tasks where quality justifies cost.
Pay for AI when: (1) You need consistent high-quality detection rule writing. (2) Complex multi-step investigation reasoning. (3) Formal compliance documents where accuracy is critical. (4) Your team is small and GPU investment isn't justified.
Payment logs, trade data, CBS logs, Aadhaar/PAN numbers, SWIFT messages, policyholder data, classified information. Always use local AI (Ollama) for these.