image model comparison
FLUX1.1 [pro] vs Gemini 3.1 Flash Image
FLUX1.1 [pro] and Gemini 3.1 Flash Image are both current image models, from Black Forest Labs and Google. FLUX1.1 [pro] is 11% cheaper per image than Gemini 3.1 Flash Image, $0.04 vs $0.045. On Arena Text-to-Image, FLUX1.1 [pro] scores 1016 Elo and Gemini 3.1 Flash Image 1262 Elo (Arena, measured October 7, 2026).
Data verified October 12, 2026 · Dataset 2026-10-12
Side by side
Standard-tier prices in effect today. The better value in each row is highlighted.
| Fact | FLUX1.1 [pro] | Gemini 3.1 Flash Image |
|---|---|---|
| Price per image | $0.04 (better) | $0.045 |
| Arena Text-to-Image | 1016 Elo (#9 of 9) | 1262 Elo (#5 of 9) (better) |
| Arena Image Edit | Not measured | 1387 Elo (#6 of 8) |
| Provider | Black Forest Labs | |
| Release date | Not reported | May 28, 2026 |
| Access | API only | API only |
| Context window | Not reported | Not reported |
| Max output | Not reported | Not reported |
| Input | text | text, image |
| Output | image | text, image |
Scores:Arena · 2026-10-12
When to choose each
FLUX1.1 [pro]
Best for
- Hosted FLUX text-to-image generation
Watch out for
- No exact compatible public benchmark snapshot is recorded
Gemini 3.1 Flash Image
Best for
- Interleaved text and image generation
Watch out for
- No exact compatible public benchmark snapshot is recorded
FLUX1.1 [pro] vs Gemini 3.1 Flash Image FAQ
Which is cheaper, FLUX1.1 [pro] or Gemini 3.1 Flash Image?
FLUX1.1 [pro] is 11% cheaper per image than Gemini 3.1 Flash Image, $0.04 vs $0.045.
Which scores higher on independent benchmarks, FLUX1.1 [pro] or Gemini 3.1 Flash Image?
Gemini 3.1 Flash Image leads on Arena Text-to-Image, 1262 Elo to 1016 Elo. Scores are independent evaluations, not either vendor's launch figures.
Related comparisons
- FLUX1.1 [pro] vs Gemini 3.1 Flash Lite Image
- FLUX1.1 [pro] vs Gemini 3 Pro Image
- FLUX1.1 [pro] vs GPT Image 2
- FLUX1.1 [pro] vs GPT Image 2.5 Flare
- FLUX1.1 [pro] vs GPT Image 2.5 Sunburst
- FLUX1.1 [pro] vs grok-imagine-image
- FLUX1.1 [pro] vs Nano Banana 2.1
- Gemini 3.1 Flash Image vs Gemini 3.1 Flash Lite Image
- Gemini 3.1 Flash Image vs Gemini 3 Pro Image
- Gemini 3.1 Flash Image vs GPT Image 2
Production evaluation
Choosing between FLUX1.1 [pro] and Gemini 3.1 Flash Image?
Public benchmarks narrow the shortlist. We run both on your own tasks, data and cost limits, then build the routing and review controls to run the winner in production.
- A head-to-head evaluation on your real workload
- Routing between models by cost and difficulty