Text-to-Image Models
Text‑to‑image models are the most popular type of generative image AI. You type a description (prompt), and the model creates an image that matches it. This chapter introduces the leading models and how to access them.
DALL‑E (OpenAI)
DALL‑E 3 is the latest version. It excels at following complex prompts, rendering text correctly, and handling details. Available via OpenAI API or ChatGPT Plus subscription. Example prompt: "A raccoon wearing an astronaut helmet on the moon, digital art style."
Midjourney
Midjourney is known for its artistic, dreamlike style. You use it through Discord: type
/imagine followed by your prompt. It offers many parameters (aspect ratio, style, quality). It requires a paid subscription. Great for concept art, fantasy scenes, and beautiful portraits.Stable Diffusion
Stable Diffusion is open source. You can run it on your own computer (with a decent GPU) or use free online demos. It is highly customizable: you can fine‑tune it, use different models (checkpoints), and control generation precisely. Many user‑friendly interfaces exist (Automatic1111, ComfyUI).
Other Notable Models
- Adobe Firefly: Integrated into Photoshop, generates images and vectors.
- Google Imagen: High quality, not widely available.
- Leonardo.ai: Free tier, game asset focused.
- Playground AI: Free online interface with Stable Diffusion.
Comparison Table
| Model | Cost | Access | Style |
|---|---|---|---|
| DALL‑E 3 | Paid | API, ChatGPT | Realistic, detailed |
| Midjourney | Subscription | Discord | Artistic, vibrant |
| Stable Diffusion | Free (local) | Local or online | Customizable |
Two Minute Drill
- DALL‑E 3: best prompt following, via API/OpenAI.
- Midjourney: artistic, via Discord subscription.
- Stable Diffusion: free, open source, runs locally.
- Choose based on your needs: quality, style, cost, or control.
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