Which AI for what? The simple guide.
Most people think one AI can do everything. It can’t. Here is which AI to use for writing, coding, research, images, video and voice – all of them are inside one Polymentra subscription.
Claude and ChatGPT chat can’t make videos
Use a video AI like Veo 3.1 or Kling in the Video studio.
Chat AIs don’t know today’s news
Use Perplexity or Deep research – they search the web and show sources.
Claude can’t draw pictures
Use GPT Image, Nano Banana or FLUX in the Image studio.
Expensive isn’t always better
For simple questions, fast models give the same answer for a fraction of the credits.
| AI | Writing & emails | Coding | Maths & logic | Long PDFs & documents | Many languages | Latest news (live web) | Images | Video | Voice | Fast & cheap |
|---|---|---|---|---|---|---|---|---|---|---|
| ChatGPTGPT-5.6 · GPT-5.5All-rounder for writing and maths. Its pictures come from GPT Image – see Image AIs below. | ★ | ★ | ★ | ✓ | ★ | ✕ | ✕ | ✕ | ✕ | ✓ |
| ClaudeFable 5.2 · Opus · Sonnet · HaikuBest for writing, coding and long documents. Cannot make images or video. | ★ | ★ | ★ | ★ | ★ | ✕ | ✕ | ✕ | ✕ | ✓ |
| GeminiGemini 4 · 3.8 Flash · 3.1 ProReads very long files, strong in many languages, fast Flash models. | ✓ | ★ | ★ | ★ | ★ | ✕ | ✕ | ✕ | ✕ | ★ |
| GrokGrok 4.7Direct, conversational answers and reasoning. | ✓ | ✓ | ★ | ✓ | ✓ | ✕ | ✕ | ✕ | ✕ | ✓ |
| DeepSeek · Qwen · KimiOpen modelsVery low cost for everyday chat and coding. | ✓ | ★ | ✓ | ✓ | ✓ | ✕ | ✕ | ✕ | ✕ | ★ |
| PerplexitySonarSearches the web and shows its sources – use it for anything recent. | ✓ | ✕ | ✓ | ✕ | ✓ | ★ | ✕ | ✕ | ✕ | ★ |
| Image AIsGPT Image 2 · Nano Banana · FLUX · SeedreamMake and edit pictures, posters and product photos. | ✕ | ✕ | ✕ | ✕ | ✕ | ✕ | ★ | ✕ | ✕ | ✓ |
| Video AIsVeo 3.1 · Kling 3.0 · Seedance · WanTurn text or a photo into a short video clip. | ✕ | ✕ | ✕ | ✕ | ✕ | ✕ | ✕ | ★ | ✕ | ✕ |
| Voice AIsElevenLabs · Gemini TTSNatural voice-overs in 70+ languages. | ✕ | ✕ | ✕ | ✕ | ★ | ✕ | ✕ | ✕ | ★ | ✓ |
★ Best choice✓ Good✕ Can’t do thisNot sure? Just ask Poly – our AI picks the right model for you.
Every AI in this chart. One subscription.
Start free – upgrade when you need the top models.