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FLUX1.1 [pro]
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FLUX1.1 [pro] is a closed-weights image model from Black Forest Labs, released October 2024.
Model information sources
Score within the LMArena text-to-image comparison set only.
$ how it compares
The image models ranked either side of FLUX1.1 [pro], out of 197 with a score, then more from Black Forest Labs.
| # | model | score | where | ||
|---|---|---|---|---|---|
| 118 |  Ideogram 2.0 | 46±2 | api $0.080/image | ||
| 119 |  Infinity-8B | 46±5 | comparison only | ||
| 120 | FLUX1.1 [pro] | 46±2 | api $0.040/image | ||
| 121 |  Midjourney V6 | 45±7 | comparison only | ||
| 122 |  Gemini 2.0 Flash Image Generation (preview) | 45±2 | comparison only | ||
| more from Black Forest Labs | |||||
| 32 | FLUX.2 [max] | 64±1 | api $0.070/image | ||
| 36 | FLUX.2 [pro] | 63±2 | api $0.030/image | ||
| 37 | FLUX.2 [flex] | 62±2 | api $0.050/image | ||
$ what it's good at
text to image▂▅▅▃▄▄█▃▁▂▁▁ #78 of 126 · 89% of its score · 5 tests
Beats Latent Diffusion text2img-large (LDM-KL-8-G, LAION-400M), VQ-Diffusion (ITHQ) here, though they rank higher overall.
| test | result | vs the others in its run | counts |
|---|---|---|---|
| LMArena text-to-image | 1015.6 ✎ | ▂▂▃▄▇█▄▂▄▂·▂ beats 9/75 | 40% |
| EvalMuse-40K model ranking (FGA-BLIP2 overall alignment) | 3.47 / 5 ✎ | █▄·▄██▄▄█▄▄▄ beats 13/14 | 18% |
| GenEval | 58.8% ✎ | ██·▄·▄·█···▄ beats 0/8 | 14% |
| ServImage task acceptance (human payment decisions, commercial design tasks) | 10.0% ✎ | ▂▃··▂··▃█··▂ beats 2/11 | 9.4% |
| MMMG image generation (average over 15 tasks) | 43.1% ✎ | █··█▄▄·▄▄·▄▄ beats 2/9 | 7.2% |
image to image / editing▁▁·▃▂▃█▃▃▄▁▁ #54 of 62 * · 9.4% of its score · 1 test
Trails ChronoEdit-14B, FLUX.1 Kontext [dev] here, though they rank lower overall.
| test | result | vs the others in its run | counts |
|---|---|---|---|
| ServImage task acceptance (human payment decisions, commercial design tasks) | 10.0% ✎ | ▂▃··▂··▃█··▂ beats 2/11 | 9.4% |
other tests1 not in a task · 10% of its score
| test | result | vs the others in its run | counts |
|---|---|---|---|
| Rapidata human-face generation alignment (Elo) | 969.6 ✎ | ▃··▅▃··▃▃··█ beats 3/8 | 10% |
$ where to run it
Through an API
api · $0.040/image · docs.bfl.ai ↗ · price sourceUSD per generated image, flat: BFL lists FLUX 1.1 [pro] at $0.04 per image (4 credits at $0.01); Ultra and Raw modes are $0.06. Product: BFL API. API model: flux-pro-1.1. Settings: standard mode (not Ultra/Raw), text-to-image, one image. Price basis: published per-image list rate. BFL's docs list FLUX1.1 [pro] under "Legacy Models" / "FLUX.1 Models (Previous Generation)"; still sold, no end date published. Currency: USD. Black Forest Labs official pricing page, observed 2026-09-26.
$ how the score was worked out · LMArena leaderboard dataset 40%, MMMG: a Comprehensive and Rel… 21%, EvalMuse-40K: A Reliable and… 18% and 2 more
Each result implies a score on its own, after adjusting for how hard its test is and who ran it. The score is their weighted average, with a small pull toward the middle for thinly tested models. Each test's weight is its counts column above; here it's added up by who ran the tests. How it works
$ improve this page
Use a short GitHub form or edit the data through a pull request. Every number needs a source; here's which ones we can use.
data updated · sources and licences · json