AI image model comparison
Riverflow V2.5 Pro vs FLUX.2 Flex
Image quality, cost per image, and editing features compared side by side. Or skip the guesswork and generate with both.
Sourceful
Riverflow V2.5 Pro
Riverflow V2.5 Pro is the most powerful variant of Sourceful's Riverflow 2.5 lineup, best for top-tier control and quality-sensitive outputs.
- Per image
- $0.13
- Output / 1M
- $31.14
- Image Elo
- 1366
Black Forest Labs
FLUX.2 Flex
FLUX.2 [flex] excels at rendering complex text, typography, and fine details, and supports multi-reference editing in the same unified architecture.
- Per image
- $0.06
- Output / 1M
- $14.65
- Image Elo
- 1200
At a glance
Quick verdict
Which model wins on the things that matter most when you're making images.
Cheaper per image
FLUX.2 Flex
$0.06 vs $0.13, 2.2x cheaper
Better image quality
Riverflow V2.5 Pro
1366 vs 1200 Elo in blind votes
Better at editing
Not available
Only one editing score is available
Newer release
Riverflow V2.5 Pro
Released June 4, 2026
Quality
Image quality rankings
Elo ratings from Design Arena, where people vote between two anonymous images made from the same prompt. Higher is better.
Image generation
Image editing
Graphic design
Logos
Pricing
Riverflow V2.5 Pro vs FLUX.2 Flex price per image
What each image actually costs, plus the underlying API rates. Cheaper option highlighted.
| Metric | ||
|---|---|---|
| Cost per imageEstimated, ~1 megapixel (1024×1024) | $0.13 | $0.06 |
| Image outputPer 1M image tokens | $31.14 | $14.65 |
| Tokens per imageHow many image tokens one ~1MP image uses | 4,175 | 4,096 |
| Prompt textPer 1M input tokens | Included | Included |
What it costs in practice
Estimated totals at standard resolution.
Single image
1 image
Social media batch
50 images
Product catalog
1,000 images
Specs
Inputs, outputs, and limits
What each model accepts, what it gives back, and how long your prompt can be.
| Metric | ||
|---|---|---|
| Accepts | Image, Text | Image, Text |
| Produces | Image | Image |
| Max prompt lengthText plus reference images | 33K tokens | 67K tokens |
| Reasoning step | Always on | No |
| Release date | June 4, 2026 | November 25, 2025 |
Features
Supported features
Creative controls available for each model.
| Metric | ||
|---|---|---|
| Image editingAccepts reference or source images | Supported | Supported |
| Text alongside imagesCan explain or caption what it made | Not supported | Not supported |
| Thinks before drawingPlans the image with a reasoning step | Supported | Not supported |
| Reproducible seedsSame seed, same image | Not supported | Supported |
| Temperature controlTrade consistency for variety | Not supported | Not supported |
Keep exploring
More on these models
Other head-to-heads, the full model page, and the alternatives list for each model.
- Riverflow V2.5 Pro vs MAI-Image-2.6
- Riverflow V2.5 Pro vs MAI-Image-2.6 Flash
- Riverflow V2.5 Pro vs Nano Banana 2
- Riverflow V2.5 Pro vs Nano Banana Pro
- Riverflow V2.5 Pro vs MAI-Image-2.5
- Riverflow V2.5 Pro vs FLUX.2 Pro
- Riverflow V2.5 Pro vs Nano Banana
- Riverflow V2.5 Pro vs GPT Image 2.5 Sunburst
- Riverflow V2.5 Pro vs Seedream 4.5
- Riverflow V2.5 Pro vs Seedream 5.0 Flash
- Riverflow V2.5 Pro vs Seedream 5.0 Pro
- Riverflow V2.5 Pro vs Grok Imagine Image 2.0
- Riverflow V2.5 Pro vs Seedream 5.0 Lite
- Riverflow V2.5 Pro vs FLUX.3 Image
- Riverflow V2.5 Pro vs Grok Imagine Image Quality
- Riverflow V2.5 Pro vs Qwen Image 3
- Riverflow V2.5 Pro vs FLUX.2 Max
- FLUX.2 Flex vs MAI-Image-2.6
- FLUX.2 Flex vs MAI-Image-2.6 Flash
- FLUX.2 Flex vs Nano Banana 2
- FLUX.2 Flex vs Nano Banana Pro
- FLUX.2 Flex vs MAI-Image-2.5
- FLUX.2 Flex vs FLUX.2 Pro
- FLUX.2 Flex vs Nano Banana
- FLUX.2 Flex vs Seedream 4.5
- FLUX.2 Flex vs Seedream 5.0 Pro
- FLUX.2 Flex vs Grok Imagine Image 2.0
- FLUX.2 Flex vs FLUX.3 Image
- FLUX.2 Flex vs Grok Imagine Image Quality
- FLUX.2 Flex vs FLUX.2 Max
Our take
FLUX.2 Flex is 2.2x cheaper per image. The right pick depends on your workload, so the quickest way to settle it is to send the same prompt to both and compare.
FAQ
Frequently asked questions
Is Riverflow V2.5 Pro or FLUX.2 Flex cheaper?
FLUX.2 Flex is cheaper at about $0.06 per standard image, compared with $0.13 for Riverflow V2.5 Pro. For 1,000 images that is $60 versus $130.
Which makes better images, Riverflow V2.5 Pro or FLUX.2 Flex?
In blind votes on Design Arena, Riverflow V2.5 Pro has an image generation Elo of 1366 and FLUX.2 Flex has 1200, putting Riverflow V2.5 Pro ahead. Taste varies by style, so the best test is running your own prompts through both.
Can Riverflow V2.5 Pro and FLUX.2 Flex edit existing images?
Yes. Both accept reference images, so you can upload a photo and ask for changes like a new background, different lighting, or added text.
Can I use Riverflow V2.5 Pro and FLUX.2 Flex at the same time?
Yes. Shortcut Chat sends one prompt to multiple image models at once, so you can see Riverflow V2.5 Pro and FLUX.2 Flex results side by side and keep the one you like.
Why choose? Generate with both.
Send one prompt to Riverflow V2.5 Pro and FLUX.2 Flex at the same time. See both images side by side and keep the one you like.