GPT Image 2 vs FLUX vs Seedream: Which AI Image Model Should You Use?

In 2026, choosing the right AI image model matters. GPT Image 2, FLUX 2 Pro, and Seedream 5 each have genuine strengths — and real weaknesses. Picking the wrong one for your use case wastes credits and produces mediocre results.

Here's an honest comparison based on actual outputs, not marketing copy.

Quick summary

GPT Image 2: Best for images with text, logos, and 4K output. Most expensive.
FLUX 2 Pro: Best for photorealism and fine detail. Excellent all-rounder.
Seedream 5 Lite: Best for fast iteration and creative concepts. Cheapest.

GPT Image 2 (OpenAI)

OpenAI's flagship text-to-image model has one killer feature that no other model matches: text rendering. If your image needs readable words, signs, logos, or typography baked into it, GPT Image 2 is the only model that reliably gets it right.

It also supports 4K resolution output and multiple quality tiers — Low (4 credits), Medium (16 credits), and High (48 credits). High quality produces genuinely impressive detail.

Best for: Marketing banners with text, social media graphics, product mockups with labels, anything requiring legible text in the image.

Not ideal for: Portrait photography, artistic styles. FLUX beats it here.

FLUX 2 Pro (Black Forest Labs)

FLUX has been the photorealism benchmark since 2024. FLUX 2 Pro maintains that reputation — it produces images that, on a good prompt, are difficult to distinguish from real photography.

It handles complex lighting, fabric textures, skin tones, and architectural details exceptionally well. The Ultra variant supports very high resolution.

Best for: Photorealistic portraits, fashion photography, architectural renders, product photos without text.

Not ideal for: Embedded text, cartoon or anime styles (Recraft or Nano Banana are better here).

Seedream 5 Lite (ByteDance)

Seedream 5 Lite uses Chain-of-Thought reasoning, which means it interprets complex prompts better than most models its price. At 5 credits per image, it's the cheapest quality option available.

The tradeoff is that it doesn't match FLUX on fine detail or GPT Image 2 on text rendering — but for brainstorming, mood boarding, and exploring visual directions, it's the obvious choice.

Best for: Fast iteration, concept exploration, creative prompts, budget-conscious generation.

Not ideal for: Final production assets where maximum quality matters.

Head-to-head: where each model wins

Portrait photography

FLUX 2 Pro > Nano Banana Pro > Seedream 5 > GPT Image 2. FLUX handles skin tones and lighting most naturally.

Text in images

GPT Image 2 >> everyone else. This is not close. Other models still hallucinate or distort text reliably.

Graphic design and vectors

Recraft v4 is the specialist here — not covered in this comparison, but worth knowing. Recraft produces clean vector-style outputs that other models can't match.

Fast cheap exploration

Seedream 5 Lite. Five credits per image, good prompt comprehension, fast results.

Chinese text or multilingual typography

Qwen Image (Alibaba). The only model that reliably renders Chinese characters correctly in generated images.

Credit costs compared (approximate)

Seedream 5 Lite: ~5 credits per image
FLUX 2 Pro Ultra: ~11 credits per image
GPT Image 2 Low quality: 4 credits; Medium: 16; High: 48
Recraft v4 Pro: ~67 credits per image

Our recommendation

For most users: start with Seedream 5 Lite to explore ideas, then switch to FLUX 2 Pro for your best prompts, and use GPT Image 2 Medium specifically when your image needs to contain readable text.

You can switch models on the same prompt with one click in Pixivo's image generator — no need to commit upfront.