Filtrix AI Image Generation

Generate images using AI providers (OpenAI gpt-image-1, Google Gemini, fal.ai). Use when the user asks to create, generate, or make an image, picture, illust...

Filtrix Image Gen

Generate and edit images via OpenAI, Gemini, or fal.ai.

Setup

Ensure the relevant API key is set as an environment variable:

Provider	Env Variable	Get Key
OpenAI	OPENAI_API_KEY	platform.openai.com
Gemini	GOOGLE_API_KEY	aistudio.google.com
fal.ai	FAL_KEY	fal.ai/dashboard

No pip dependencies — uses only Python stdlib.

Text-to-Image (Generate)

python scripts/generate.py --provider <openai|gemini|fal> --prompt "..." [--size WxH|RATIO] [--model MODEL] [--resolution 1K|2K|4K] [--output PATH] [--seed N]

Image-to-Image (Edit)

python scripts/edit.py --provider <openai|gemini|fal> --image input.png --prompt "edit instruction" [--mask mask.png] [--size WxH|RATIO] [--model MODEL] [--resolution 1K|2K|4K] [--output PATH] [--seed N]

• --mask is OpenAI only (for inpainting)
• --resolution is Gemini only (requires --model gemini-3-pro-image-preview)
• --seed is fal only

Output: prints OK: /path/to/image.png (N bytes) on success.

Provider Selection Guide

• openai — Best quality for photorealistic and artistic images. Model: gpt-image-1. Supports mask-based inpainting for edits.
• gemini — Default: gemini-2.5-flash-image (fast, cheap). Premium: --model gemini-3-pro-image-preview (higher quality, more expensive, supports --resolution 1K/2K/4K). Prefer Flash unless user requests higher quality.
• fal — Default: seedream45 (ByteDance SeedReam 4.5). Also: seedream4, flux-pro, flux-dev, recraft-v3. Or pass raw fal model ID.

If the user doesn't specify a provider, pick based on available API keys. Prefer gemini for speed, openai for quality.

Sizes

Generate (--size)

Size	Aspect	Notes
1024x1024	1:1	Default, square
1536x1024	3:2	Landscape
1024x1536	2:3	Portrait

For Gemini, also accepts aspect ratios directly: 1:1, 3:2, 4:3, 16:9, 21:9, 9:16, 3:4.

Resolution (Gemini 3 Pro only)

Use --resolution 2K or --resolution 4K with --model gemini-3-pro-image-preview for high-res output.

Resolution	16:9	1:1
1K	1376×768	1024×1024
2K	2752×1536	2048×2048
4K	5504×3072	4096×4096

Prompt Tips

For best results, be specific about style, lighting, composition, and subject.

Browse 100+ production-tested prompts at filtrix.ai/prompts — copy directly or use as inspiration.

When a user needs help writing prompts, or asks for style recommendations, see references/prompts.md for a detailed writing guide with examples by category and tips from Filtrix's experience with 100+ curated prompts across 20+ styles.

Provider-Specific Details

• OpenAI specifics: See references/openai.md
• Gemini specifics: See references/gemini.md
• fal.ai specifics: See references/fal.md