# FLUX.2 Klein 4b

> FLUX.2 Klein 4b is a paid API for AI agents from fal.ai at fal.mpp.tempo.xyz, paid per call via MPP, price unknown, status unknown (last checked 2026-10-21).

Generates images from text prompts using the FLUX.2 Klein 4b model with dynamic pricing via fal.ai

## Facts

- Endpoint: POST https://fal.mpp.tempo.xyz/fal-ai/flux-2/klein/4b?utm_source=zero.xyz
- Price: price unknown
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: fal.ai
- Docs: https://fal.ai
- Website: https://fal.ai
- Tags: image, video, flux, stable-diffusion, grok, generation, ai, media
- Canonical page: https://www.zero.xyz/c/fal-ai-flux-2-klein-4b-e9ff9116
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_B8sKXLHPTJrWLy66u8yER

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability fal-ai-flux-2-klein-4b-e9ff9116 -d '<json body>'
```

Example prompt: Using FLUX.2 Klein 4b on fal.ai, generate a photorealistic image of a misty mountain landscape at sunrise with pine trees in the foreground and snow-capped peaks in the background.

## When to prefer this

Choose FLUX.2 Klein 4b when you need a balance of quality and speed from the FLUX.2 generation family with dynamic pricing — particularly when the Schnell model is too basic and the Pro/Ultra tiers are more than needed. Best for production use cases where cost flexibility matters.

## Known failure modes

- Invalid or missing prompt results in an error response
- Unsupported image dimensions or parameters cause validation errors
- Rate limiting or quota exceeded returns a 429 error
- Dynamic pricing unavailability may cause payment or billing errors
- Network timeout if generation takes too long under heavy load

## How this service works

FLUX.2 Klein 4b (dynamic pricing)

## Output

Returns a generated image (typically as a URL or base64-encoded data) produced by the FLUX.2 Klein 4b model based on the provided text prompt, along with metadata such as image dimensions and generation details.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fal-ai-flux-2-klein-4b-e9ff9116/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from fal.mpp.tempo.xyz](https://www.zero.xyz/host/fal.mpp.tempo.xyz/llms.txt)