flux-2-klein

Name: flux-2-klein
Author: prime-skills

31stars9forks

How to install flux-2-klein?

prime-skills/runcomfy-agent-skills/flux-2-klein

$npx -y skills add prime-skills/runcomfy-agent-skills --skill flux-2-klein

Installs into the current project.

Summary

Generate images with Flux 2 Klein (Black Forest Labs' distilled fast variant of Flux 2) on RunComfy — bundled with the model's documented prompting patterns so the skill gets sharper output than naive prompting against the same model. Documents Flux 2 Klein's strengths (sub-secon

Files · 1

View on GitHub

SKILL.md

1	# Flux 2 Klein — Pro Pack on RunComfy
2
3	[runcomfy.com](https://www.runcomfy.com/?utm_source=skills.sh&utm_medium=skill&utm_campaign=flux-2-klein) · [9B model](https://www.runcomfy.com/models/blackforestlabs/flux-2-klein/9b/text-to-image?utm_source=skills.sh&utm_medium=skill&utm_campaign=flux-2-klein) · [4B model](https://www.runcomfy.com/models/blackforestlabs/flux-2-klein/4b/text-to-image?utm_source=skills.sh&utm_medium=skill&utm_campaign=flux-2-klein) · [GitHub](https://github.com/agentspace-so/runcomfy-skills/tree/main/flux-2-klein)
4
5	Black Forest Labs' Flux 2 Klein (the distilled, low-latency variant of Flux 2) hosted on the RunComfy Model API — no API key, async REST.
6
7	```bash
8	npx skills add agentspace-so/runcomfy-skills --skill flux-2-klein -g
9	```
10
11	## When to pick this model (vs siblings)
12
13	Flux 2 Klein's distinct strength is latency-first creative iteration: sub-second feedback enables live art-direction sessions and rapid product visualization that batch-style models can't sustain. Pick it when iteration speed matters more than ceiling resolution.
14
15	\| You want \| Use \|
16	\|---\|---\|
17	\| Real-time / live art-direction sessions \| Flux 2 Klein 4B \|
18	\| Fast iteration with strong detail at the end \| Flux 2 Klein 9B \|
19	\| Multi-reference brand styling with consistent looks \| Flux 2 Klein \|
20	\| 2K–4K hero images, max resolution \| Seedream 5 \|
21	\| Maximum prompt adherence + extreme detail \| Flux 2 Pro \|
22	\| Embedded text, logos, multilingual signage \| GPT Image 2 \|
23	\| Hyperrealistic portrait \| Nano Banana Pro \|
24
25	If the user said "Flux 2 Klein" / "BFL Klein" / "flux klein" explicitly, route here regardless. If they said "Flux 2" generically, ask whether they want Klein (fast) or Pro (max quality) before defaulting.
26
27	## Prerequisites
28
29	1. RunComfy CLI — `npm i -g @runcomfy/cli`
30	2. RunComfy account — `runcomfy login` opens a browser device-code flow.
31	3. CI / containers — set `RUNCOMFY_TOKEN=<token>` instead of `runcomfy login`.
32
33	## Endpoints + input schema
34
35	Two variants, same endpoint shape, same prompt grammar.
36
37	### `blackforestlabs/flux-2-klein/9b/text-to-image`
38
39	The fidelity-first variant. Use for polish / final output.
40
41	\| Field \| Type \| Required \| Default \| Notes \|
42	\|---\|---\|---\|---\|---\|
43	\| `prompt` \| string \| yes \| — \| Up to ~512 tokens. Longer degrades. \|
44	\| `steps` \| int \| no \| 25 \| 4–50. Step-distilled architecture — 4–8 enough for concepting; ~25 for polish; >25 buys little. \|
45	\| `width` \| int \| no \| 1024 \| 512–1536 typical. Aspect ratio capped at 16:9, max ~2K total. \|
46	\| `height` \| int \| no \| 1024 \| Match `width`'s aspect intent. \|
47
48	### `blackforestlabs/flux-2-klein/4b/text-to-image`
49
50	The latency-first variant. Sub-second 4-step inference. Use for live iteration / concepting.
51
52	Same field set as 9B. Default `steps` is effectively 4 — the variant is built for that step count.
53
54	### Reference images (both variants)
55
56	Up to 4 simultaneous reference images are supported on the same endpoint for style transfer / guided composition. The exact field name in the JSON body is documented on the [model's API tab](https://www.runcomfy.com/models/blackforestlabs/flux-2-klein/9b/text-to-image?utm_source=skills.sh&utm_medium=skill&utm_campaign=flux-2-klein) — pass it through the CLI verbatim. Reference-image use enables editing-style workflows without a separate `/edit` endpoint.
57
58	## How to invoke
59
60	Fast concepting (4B, sub-second):
61
62	```bash
63	runcomfy run blackforestlabs/flux-2-klein/4b/text-to-image \
64	--input '{"prompt": "<user prompt>"}' \
65	--output-dir <absolute/path>
66	```
67
68	Polish / final (9B, ~25 steps):
69
70	```bash
71	runcomfy run blackforestlabs/flux-2-klein/9b/text-to-image \
72	--input '{
73	"prompt": "<user prompt>",
74	"steps": 25,
75	"width": 1024,
76	"height": 1024
77	}' \
78	--output-dir <absolute/path>
79	```
80
81	Wide-format poster:
82
83	```bash
84	runcomfy run blackforestlabs/flux-2-klein/9b/text-to-image \
85	--input '{"prompt": "<user prompt>", "width": 1536, "height": 864}' \
86	--output-dir <absolute/path>
87	```
88
89	The CLI submits, polls every 2s until terminal, then downlo

People who liked this also viewed

6 picks

Type

flux-2-klein

31stars9forks

View on GitHub

How to install flux-2-klein?

prime-skills/runcomfy-agent-skills/flux-2-klein

$npx -y skills add prime-skills/runcomfy-agent-skills --skill flux-2-klein

Installs into the current project.

Summary

Files · 1

View on GitHub

SKILL.md

1	# Flux 2 Klein — Pro Pack on RunComfy
2
3	[runcomfy.com](https://www.runcomfy.com/?utm_source=skills.sh&utm_medium=skill&utm_campaign=flux-2-klein) · [9B model](https://www.runcomfy.com/models/blackforestlabs/flux-2-klein/9b/text-to-image?utm_source=skills.sh&utm_medium=skill&utm_campaign=flux-2-klein) · [4B model](https://www.runcomfy.com/models/blackforestlabs/flux-2-klein/4b/text-to-image?utm_source=skills.sh&utm_medium=skill&utm_campaign=flux-2-klein) · [GitHub](https://github.com/agentspace-so/runcomfy-skills/tree/main/flux-2-klein)
4
5	Black Forest Labs' Flux 2 Klein (the distilled, low-latency variant of Flux 2) hosted on the RunComfy Model API — no API key, async REST.
6
7	```bash
8	npx skills add agentspace-so/runcomfy-skills --skill flux-2-klein -g
9	```
10
11	## When to pick this model (vs siblings)
12
13	Flux 2 Klein's distinct strength is latency-first creative iteration: sub-second feedback enables live art-direction sessions and rapid product visualization that batch-style models can't sustain. Pick it when iteration speed matters more than ceiling resolution.
14
15	\| You want \| Use \|
16	\|---\|---\|
17	\| Real-time / live art-direction sessions \| Flux 2 Klein 4B \|
18	\| Fast iteration with strong detail at the end \| Flux 2 Klein 9B \|
19	\| Multi-reference brand styling with consistent looks \| Flux 2 Klein \|
20	\| 2K–4K hero images, max resolution \| Seedream 5 \|
21	\| Maximum prompt adherence + extreme detail \| Flux 2 Pro \|
22	\| Embedded text, logos, multilingual signage \| GPT Image 2 \|
23	\| Hyperrealistic portrait \| Nano Banana Pro \|
24
25	If the user said "Flux 2 Klein" / "BFL Klein" / "flux klein" explicitly, route here regardless. If they said "Flux 2" generically, ask whether they want Klein (fast) or Pro (max quality) before defaulting.
26
27	## Prerequisites
28
29	1. RunComfy CLI — `npm i -g @runcomfy/cli`
30	2. RunComfy account — `runcomfy login` opens a browser device-code flow.
31	3. CI / containers — set `RUNCOMFY_TOKEN=<token>` instead of `runcomfy login`.
32
33	## Endpoints + input schema
34
35	Two variants, same endpoint shape, same prompt grammar.
36
37	### `blackforestlabs/flux-2-klein/9b/text-to-image`
38
39	The fidelity-first variant. Use for polish / final output.
40
41	\| Field \| Type \| Required \| Default \| Notes \|
42	\|---\|---\|---\|---\|---\|
43	\| `prompt` \| string \| yes \| — \| Up to ~512 tokens. Longer degrades. \|
44	\| `steps` \| int \| no \| 25 \| 4–50. Step-distilled architecture — 4–8 enough for concepting; ~25 for polish; >25 buys little. \|
45	\| `width` \| int \| no \| 1024 \| 512–1536 typical. Aspect ratio capped at 16:9, max ~2K total. \|
46	\| `height` \| int \| no \| 1024 \| Match `width`'s aspect intent. \|
47
48	### `blackforestlabs/flux-2-klein/4b/text-to-image`
49
50	The latency-first variant. Sub-second 4-step inference. Use for live iteration / concepting.
51
52	Same field set as 9B. Default `steps` is effectively 4 — the variant is built for that step count.
53
54	### Reference images (both variants)
55
56	Up to 4 simultaneous reference images are supported on the same endpoint for style transfer / guided composition. The exact field name in the JSON body is documented on the [model's API tab](https://www.runcomfy.com/models/blackforestlabs/flux-2-klein/9b/text-to-image?utm_source=skills.sh&utm_medium=skill&utm_campaign=flux-2-klein) — pass it through the CLI verbatim. Reference-image use enables editing-style workflows without a separate `/edit` endpoint.
57
58	## How to invoke
59
60	Fast concepting (4B, sub-second):
61
62	```bash
63	runcomfy run blackforestlabs/flux-2-klein/4b/text-to-image \
64	--input '{"prompt": "<user prompt>"}' \
65	--output-dir <absolute/path>
66	```
67
68	Polish / final (9B, ~25 steps):
69
70	```bash
71	runcomfy run blackforestlabs/flux-2-klein/9b/text-to-image \
72	--input '{
73	"prompt": "<user prompt>",
74	"steps": 25,
75	"width": 1024,
76	"height": 1024
77	}' \
78	--output-dir <absolute/path>
79	```
80
81	Wide-format poster:
82
83	```bash
84	runcomfy run blackforestlabs/flux-2-klein/9b/text-to-image \
85	--input '{"prompt": "<user prompt>", "width": 1536, "height": 864}' \
86	--output-dir <absolute/path>
87	```
88
89	The CLI submits, polls every 2s until terminal, then downlo

People who liked this also viewed

6 picks

Type