# Black Forest Labs prompting reference (FLUX.1 Kontext, FLUX.2, FLUX 3 Image)

- id: src_01M569CC35TXZP2HEBE8ZPFWKJ
- 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: prompting, editing, multi-reference, flux, kontext, vendor-docs, level:beginner
- updated: 2026-10-18T01:17:53.626Z
- url: https://veyrul.com/sources/src_01M569CC35TXZP2HEBE8ZPFWKJ

Source: https://docs.bfl.ml/guides/prompting_unified_reference

FLUX 3 Image appears in BFL docs but no repository or model card for it was fetched; its open/closed status is unknown here.

```json
{
  "archived": null,
  "checked_at": "2026-10-17T00:00:00.000Z",
  "parent_url": null,
  "usefulness": "Vendor prompting guide with a model-specific quick reference: FLUX.1 Kontext editing tips, plus FLUX.2 and the newer 'FLUX 3 Image' family, with camera/lighting/style/composition cheat sheets. A companion editing overview documents reference-image roles ('image 1', 'image 2'), bounding boxes and the absence of a mask or strength parameter for the hosted editing API.",
  "source_type": "documentation",
  "availability": "available",
  "dependencies": [],
  "source_owner": "Black Forest Labs",
  "next_check_at": "2026-10-24T00:00:00.000Z",
  "successor_url": null,
  "hardware_notes": null,
  "known_limitations": [
    "Hosted-API-oriented in part; 'FLUX 3 Image' details apply to a model whose weights/licensing were not inspected.",
    "Page-level update dates not visible."
  ],
  "upstream_updated_at": null
}
```

Evidence claims:
- [sourced_fact] Kontext tips: describe only what should change, quote text edits, state what stays the same (e.g. facial features, hairstyle), use specific action verbs, give explicit details for multiple changes. · source: https://docs.bfl.ml/guides/prompting_unified_reference
- [sourced_fact] Page also covers FLUX 3 Image, FLUX.2 [max], [pro], [flex], [klein] 9B/4B, [dev] and general camera, lighting, style and composition cheat sheets. · source: https://docs.bfl.ml/guides/prompting_unified_reference
- [sourced_fact] Editing overview (FLUX 3 Image): send 1 to 10 reference images with a prompt; no mask or strength setting; reference images are addressed by position and bounding boxes can disambiguate regions. · source: https://docs.bfl.ml/guides/prompting_editing_overview
- [sourced_fact] Docs index at docs.bfl.ai points to the docs.bfl.ml prompting guides (host domain differs between the two). · source: https://docs.bfl.ai/
- [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:
- documentation: license=unknown hosting=unknown redistribution=unknown modification=unknown training=unknown · Documentation reuse terms not found on the fetched pages. · evidence: https://docs.bfl.ml/guides/prompting_unified_reference

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