Melies
Image Model Comparison

GPT Image 1.5 vs FLUX.2 [max]

OpenAI's leaderboard champion vs Black Forest Labs' premium flagship — 15 vs 25 credits.

GPT Image 1.5 from OpenAI and FLUX.2 [max] from Black Forest Labs represent two different approaches to AI image generation. OpenAI's #1 ranked image model with exceptional prompt adherence, photorealism, and text rendering. On the other side, maximum performance Flux model with highest editing consistency and prompt following.

At 15 credits, GPT Image 1.5 costs 10 credits less than FLUX.2 [max] (25 credits). The question is whether the extra cost of FLUX.2 [max] translates into meaningfully better results for your use case. For highest quality generation, text rendering, photorealism, GPT Image 1.5 is hard to beat at its price point. But if you need maximum quality, editing workflows, style-faithful generation, FLUX.2 [max] may justify the premium.

Updated March 2026

The Bottom Line

GPT Image 1.5 (15 credits) offers better value for everyday use, especially for highest quality generation. FLUX.2 [max] (25 credits) is worth the premium when you need maximum quality. Both are available on Melies — try each with a test prompt to see which fits your style.

GPT Image 1.5 vs FLUX.2 [max]: Visual Output

Both generated with the same prompt and seed 42. Click to view full size.

OpenAIGPT Image 1.5
Black Forest LabsFLUX.2 [max]

GPT Image 1.5 vs FLUX.2 [max]: How They Compare

OpenAIGPT Image 1.5
Black Forest LabsFLUX.2 [max]
ProviderOpenAIBlack Forest Labs
ReleasedJan 2026Dec 2025
Cost
15
25
SpeedMediumSlower
Reference imagesUp to 1
Editing
WebP output

GPT Image 1.5 vs FLUX.2 [max]: Cost Comparison

GPT Image 1.5 is 40% cheaper than FLUX.2 [max]. Here's how credits add up at scale.

VolumeGPT Image 1.5FLUX.2 [max]
10 images 150 250
50 images 750 1,250
100 images 1,500 2,500

Strengths & Weaknesses

OpenAI

GPT Image 1.5

Strengths
  • + More affordable (15 vs 25 credits)
  • + Highest quality generation
  • + Supports 1 reference images
  • + WebP output for smaller file sizes
  • + #1 on all major image leaderboards
Weaknesses
  • - Higher price point relative to speed tier
Black Forest Labs

FLUX.2 [max]

Strengths
  • + Maximum quality
  • + Highest editing consistency
  • + Custom resolution up to 14142px
  • + Safety tolerance 1–5
  • + Image editing with reference URLs
Weaknesses
  • - More expensive (25 vs 15 credits)
  • - Slower generation
  • - No reference image support

GPT Image 1.5 vs FLUX.2 [max]: Which to Pick?

On a tight budget

At 15 credits per image, GPT Image 1.5 gives you more generations for your plan. Good enough quality for most everyday use.

GPT Image 1.5

Maximum quality matters

FLUX.2 [max] is worth the extra credits when the output needs to be perfect — portfolio pieces, client work, or final deliverables.

FLUX.2 [max]

Character or style consistency

GPT Image 1.5 supports 1 reference images to keep subjects, styles, and characters consistent across generations.

GPT Image 1.5

GPT Image 1.5 vs FLUX.2 [max]: FAQ

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Try GPT Image 1.5 & FLUX.2 [max]

Compare GPT Image 1.5, FLUX.2 [max], and 15+ AI image models side by side. Switch models with one click, same credits.

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