Base model

FLUX.2 [klein] 4B

from $1.00 at 4 providers

black-forest-labs/flux-2-klein-4b · 4B parameters · 4 providers · Images ·

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Found 4

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Free for everyone, no sign-in needed: the whole catalog in one file, up to 20 downloads an hour (60 with a free account).

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The same as an API for bots (format=json|csv|yaml, limit, offset):

https://airatecard.com/export?format=json&model=black-forest-labs%2Fflux-2-klein-4b

API parameters and a form

Model	Provider	Input, $	Output, $	Your cost/mo, $	Subscription, $/mo	Region	Context	Max output	Accepts	Last checked
= FLUX.2 [klein] 4B×	Provider aiml 1 cloudflare-workers-ai 1 deepinfra 1 nearai 1				Pricing pay per use 4	Region US 1			Input text 1	Status Active 4
FLUX.2-klein-4B FLUX.2 [klein] 4B	nearai ↗	$0.012 / image	$1.00	—		US	128K	1	text	4 Nov 12:00
FLUX.2 [klein] 4B FLUX.2 [klein] 4B	aiml ↗	—	$0.014	—			—	—	text, image/png, image/jpeg +1	4 Nov 12:00
FLUX.2 [klein] 4B FLUX.2 [klein] 4B	cloudflare-workers-ai ↗	—	$0.001095	—			—	—	text, image/png, image/jpeg +1	4 Nov 12:26
FLUX.2 [klein] 4B FLUX.2 [klein] 4B	deepinfra ↗	$0.014 / image	—	—			—	—	text, image/png, image/jpeg +1	4 Nov 12:00

Ranges in one field: "from-to" - "0.5-3", "-3" (up to), "128k-" (from); a colon works too. Several ticked values of one column are ORed, columns are ANDed.

Input price history, $/1M

Latest: minimum $1.00, median $1.00 (Nov 4, 2026)

The FLUX family - base models: 58

flux
- flux (WebSocket) 2
- FLUX.2 2
- FLUX 3 1
- flux-1-1-pro 7
- FLUX.1 [dev] 5
- FLUX.1 Kontext [dev] 3
- FLUX_1-Krea-dev 1
- FLUX-1-Redux-dev 1
- FLUX.1 [schnell] 12
- FLUX.2 [dev] 5
- FLUX.2 Edit 1
- flux-2-flash 1
- FLUX.2 [flex] 7
- Flux.2 [klein] 1
- FLUX.2 [klein] 4B 11
- flux-2-klein-4b-base 1
- FLUX.2 [klein] 9B 5
- flux-2-klein-9b-base 1
- Flux 2 LoRA 1
- Flux 2 LoRA Edit 1
- FLUX.2 [max] 6
- FLUX.2 Max Edit 1
- FLUX.2 [pro] 10
- FLUX.2 [pro] Edit 1
- flux-2-turbo 1
- Flux 3 1
- FLUX 3 Image 2
- FLUX 3 Image Klein 1
- FLUX 3 Video 2
- flux-dev 4
- flux-dev-finetuner 1
- FLUX Erase 1
- flux-fill 1
- flux-finetune 1
- flux-inpaint 1
- FLUX.1 Kontext 1
- FLUX.1 Kontext [Edit] 1
- FLUX.1 Kontext [max] 6
- FLUX.1 Kontext [pro] 6
- flux-krea 1
- FLUX Outpainting 1
- flux-pro 3
- flux-pro-1.0-canny 1
- flux-pro-1.0-canny-finetuned 1
- flux-pro-1.0-depth 1
- flux-pro-1.0-depth-finetuned 1
- flux-pro-1.0-fill-finetuned 1
- flux-pro-1.1-t 1
- FLUX.1 Fill [pro] 2
- FLUX1.1 [pro] Ultra 5
- FLUX 1.1 [pro] Canny [Edit] 1
- FLUX 1.1 [pro] Depth [Edit] 1
- flux-pro-finetuned 1
- flux-realism 1
- flux-schnell-t 1
- Flux SRPO 1
- Flux SRPO Image‑to‑Image 1
- FLUX Virtual Try-On 1

About the model: cost of your workload, questions, comparisons, citation

Cost of my workload → in the Tools tab: every provider of this model, cheapest first

Frequently asked questions

How much does FLUX.2 [klein] 4B API cost?

From $1.00 input and $0.001095 output per 1M tokens, at deepinfra.

Which provider offers FLUX.2 [klein] 4B cheapest?

deepinfra offers the lowest price, $1.00 per 1M tokens, among 4 providers.

What is the context window of FLUX.2 [klein] 4B?

128K tokens.

Where is FLUX.2 [klein] 4B available?

Available in: US.

Compare

vs FLUX.1 [schnell] vs FLUX.2 [klein] 9B vs FLUX.2 [max]

Source: AI Rate Card, https://airatecard.com/en/model/black-forest-labs/flux-2-klein-4b, prices checked 2026-11-04