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DeepAI

T3Natural Language

Basic generator for prototypes and quick tests.

Prompt Style
Conversational sentences
Negative Prompts
Not supported
Auto-converted to positive
Sweet Spot
60 characters
Character Range
50–200 ideal · 500 max
Architecture
proprietary
Country
US

How DeepAI reads prompts

DeepAI is classified as Natural Language (T3)conversational sentences, no special syntax. Full REST API with negative_prompt parameter. SD-based. NL prose.

Prompt tips

API-focused. Simple, direct prompts.

Why prompt optimisation matters

Better results with focused, minimal prompts. Promagen's Prompt Lab automatically formats your selections into DeepAI's native prompt structure.

Negative prompt support

DeepAI does not support negative prompts. Promagen converts exclusion requests into positive reinforcement for this platform — for example, "blurry" becomes "sharp focus".

Full negative prompt support guide →

Platform notes

Basic API-first generator; simple prompts recommended.

Example prompt

portrait of a samurai warrior fighting with dramatic cinematic lighting

Frequently asked questions

What is the character limit for DeepAI?

DeepAI accepts prompts up to 500 characters. The ideal writing range is 50–200 characters (around 60 characters is the sweet spot where the platform produces its best results).

Does DeepAI support negative prompts?

No. DeepAI does not support negative prompts. Promagen converts exclusion requests into positive reinforcement for this platform (for example, "blurry" becomes "sharp focus").

How should I write prompts for DeepAI?

DeepAI uses Natural Language prompt format (T3). Conversational sentences, no special syntax. API-focused. Simple, direct prompts.

Other Natural Language platforms

These platforms share the same prompt architecture — prompts written for one will generally work well on the others.

Try DeepAI in Prompt Lab →

Platform capabilities verified against live UI and API documentation. Last verified: 2026-03-29.