# black-forest-labs/flux2 (FLUX.2 inference code)

- id: src_01M569CC4M4Q9V15W9TH3JSB7Q
- type: source · status: active · revision: 1
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=metadata_checked, execution=not_run, review=unreviewed
- categories: T05 · tags: flux2, multi-reference, image-editing, character-consistency, klein, 32b, level:advanced
- updated: 2026-10-18T01:17:53.672Z
- url: https://veyrul.com/sources/src_01M569CC4M4Q9V15W9TH3JSB7Q

Source: https://github.com/black-forest-labs/flux2

Candidate for a character-consistency/multi-reference reproduction task for the library (not run here).

```json
{
  "archived": false,
  "checked_at": "2026-10-17T00:00:00.000Z",
  "parent_url": null,
  "usefulness": "Official inference repo for FLUX.2, a newer open-weight BFL family supporting text-to-image, single-reference and multi-reference editing (character, object, style references without finetuning). Variants span a 32B dev model and smaller klein models, with mixed licenses per size.",
  "source_type": "repository",
  "availability": "available",
  "dependencies": [],
  "source_owner": "Black Forest Labs",
  "next_check_at": "2026-10-31T00:00:00.000Z",
  "successor_url": null,
  "hardware_notes": "Sourced: klein 4B about 8GB VRAM; dev 32B needs H100-class or quantized builds (4090 with remote text encoder).",
  "known_limitations": [
    "Quantised-build quality vs full precision not documented in the fetched sources.",
    "Klein model cards not inspected; license claims rest on the repo README."
  ],
  "upstream_updated_at": "2026-03-12T15:06:20.000Z"
}
```

Evidence claims:
- [sourced_fact] FLUX.2 [dev] is a 32B flow-matching transformer under the FLUX.2-dev Non-Commercial License; FLUX.2 [klein] 4B models are Apache 2.0 and 9B models use the FLUX Non-Commercial License (per README). · source: https://github.com/black-forest-labs/flux2
- [sourced_fact] README: klein 4B needs about 8GB VRAM; FLUX.2 [dev] needs H100-class unless quantized; Hugging Face quantized builds can run on an RTX 4090 with a remote text encoder. · source: https://github.com/black-forest-labs/flux2
- [sourced_fact] FLUX.2-dev model card: supports single- and multi-reference editing incl. character/object/style references without finetuning; requires NSFW/IP-infringement filters or manual review at input and output; files gated. · source: https://huggingface.co/black-forest-labs/FLUX.2-dev
- [sourced_fact] README dated news: FLUX.2 [dev] release 25.11.2025; FLUX.2 [klein] family release 15.01.2026. · source: https://github.com/black-forest-labs/flux2
- [upstream_claim] Research review verdict at export: reviewed (as of 2026-10-17). Recorded by the research pipeline, not a hub review outcome; evidence.review stays unreviewed until an independent reviewer records one.

Rights:
- code: license=Apache-2.0 hosting=permitted redistribution=permitted modification=permitted training=unknown · Apache License 2.0 text confirmed at repo LICENSE.md. · evidence: https://raw.githubusercontent.com/black-forest-labs/flux2/main/LICENSE.md
- model_weights: license=FLUX.2-dev-Non-Commercial-License hosting=restricted redistribution=restricted modification=restricted training=unknown · FLUX.2 [dev] and klein 9B weights: non-commercial license per README/model card; card says outputs can be used commercially but to read the full license. The FLUX.2 license text itself was not fetched, so output/training clauses are unchecked. · evidence: https://huggingface.co/black-forest-labs/FLUX.2-dev, https://github.com/black-forest-labs/flux2
- model_weights: license=Apache-2.0 hosting=permitted redistribution=permitted modification=permitted training=unknown · FLUX.2 [klein] 4B variants stated as Apache 2.0 in the README only; the individual klein model cards were not fetched. · evidence: https://github.com/black-forest-labs/flux2

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