The effectiveness of these WordPress AI plugins depends heavily on which AI model you connect to them. ChatGPT, Gemini, and Perplexity each offer different advantages and trade-offs in areas like content quality, SEO, research, automation, and cost. Here’s how they compare in practice:
1. AI Engine
ChatGPT: Direct API integration using your API key.
For example: you send a prompt → get an article, chatbot response, or summary.
Gemini: Supported via Google API.
Useful for content generation, translation, and text analysis.
Perplexity: Usually no official direct support. It may work through custom endpoints if API access is available.
2. Rank Math SEO
ChatGPT: Mostly used for title suggestions, meta descriptions, and keyword clustering.
Gemini: Can work similarly if connected through API, although official integration is usually more limited.
Perplexity: Better for external research (like keyword discovery), not direct integration.
Example:
“Best SEO title for AI article”
3. Bertha AI
This plugin usually runs on its own backend, so you do not directly choose the model.
Often:
- GPT-based
- Sometimes Claude-like models internally
Gemini or Perplexity usually do not connect directly.
4. Formidable Forms
ChatGPT:
User submits a form → data is sent to GPT → AI returns a response.
Example:
User:
“I need app development”
AI:
“Do you need iOS, Android, or Web?”
Gemini: Same structure via API.
Perplexity: Less suitable because conversational form handling is not its main purpose.
5. Tidio
Usually uses its own internal AI model (Lyro AI).
But:
It may use GPT in the backend.
Gemini: Usually no direct integration.
Perplexity: No.
6. Akismet
None of them.
It uses its own proprietary model, not GPT or Gemini.
Purpose:
Pattern detection.
7. Sucuri Security
None of them.
AI here means threat intelligence and anomaly detection, not LLMs.
8. Voicer
ChatGPT: Usually generates the text, while Voicer converts it into audio.
Gemini: Can also generate text.
Perplexity: Can handle research + text generation.
But the voice engine itself is separate.
Flow:
Perplexity → article → Voicer → audio.
9. AI Power
The strongest multi-model integration:
✅ ChatGPT
✅ Gemini
✅ Claude
✅ Sometimes custom APIs
Perplexity: Usually only through custom API.
This is the most flexible one.
10. All in One SEO
Similar to Rank Math:
ChatGPT:
Title, meta, and content suggestions.
Gemini:
Works if custom API support exists.
Perplexity:
Good for research, but limited direct integration.
Simple summary:
For content generation:
AI Engine + AI Power + Bertha
(Best with ChatGPT/Gemini)
For SEO:
Rank Math + All in One SEO
(Best with ChatGPT)
For chatbot:
AI Engine + Tidio
(Best with ChatGPT)
For research:
Perplexity is stronger than the others, but mostly outside WordPress.
Depending on your goals, different combinations may work better:
- AI Engine + Gemini → lower cost and flexible
- AI Power + ChatGPT → all-in-one solution
- Perplexity + manual workflow → best for research-heavy articles