FLUX
Black Forest Labs · — · Image
Global Closed sourceFree tier
Showing version: FLUX.2 [max] · 2025-12-16 · Version lineage ↓
01
Overview
FLUX is Black Forest Labs' image model family, founded by the original Stable Diffusion team, pairing closed API flagships (Pro/Max) with open-weight dev releases.
Release date2025-12-16
02 / Provenance
Field checks and source notes
When sources disagree on a field, every reading is listed here with its own citation. We do not take a midpoint, invent a missing figure, or decide which side is right — follow the citation and judge for your case.
These field-level notes are recorded verbatim in Chinese in the source data. Open the Chinese version
03 / Plain layer
Plain-language benchmarks
Image quality 1161 · Human preference
Max output Not disclosed
Price / free Not disclosedFLUX.2 [dev] 等开放权重可免费本地运行（非商用许可）；API 无免费档信息。
04
Practical facts
| Context length | Not disclosed |
|---|---|
| Max output | Not disclosed |
| Parameters | Not disclosed |
| Input | Not disclosed |
| Output price | Not disclosed |
| CNY | Not disclosed |
| Free tier | Open weights such as FLUX.2 [dev] can be run locally for free (non-commercial licence); no free tier is published for the API. |
| Output speed | Not disclosed |
| Release date | |
| License | Not disclosed |
Show technical data
Technical benchmark table
| Benchmark | Score | Max / unit | Source type | Source | Test date | Conditions |
|---|---|---|---|---|---|---|
| Image preference arena image-preference-arena | 1161 | elo_like | Human preference | 榜单数据日期 2026-11-04；同榜 FLUX.2 [pro] 1153、FLUX.2 [dev] 1145。 |
| Version | Release date | Status | Openness | Parameters | What changed | Detail | |
|---|---|---|---|---|---|---|---|
| FLUX.2 [klein] | Active | Open weights | Not disclosed | TBD | Detail | ||
| FLUX.2 [max]Showing version | Active | Closed source | Not disclosed | TBD | Detail | ||
| FLUX.2 | Active | Open weights | Not disclosed | TBD | Detail | ||
| FLUX.1 Kontext | Superseded | Closed source | Not disclosed | TBD | Detail | ||
| FLUX 1.1 Pro | Superseded | Closed source | Not disclosed | TBD | Detail | ||
| FLUX.1 | Superseded | Open weights | Not disclosed | TBD | Detail |
Last updated: · Sources on detail page
06 / Compare