API ManyNew models: Qwen 3.8 Max, Claude Haiku 5.5, Claude Opus 5.5, Claude Sonnet 5.5

FLUX 2 Flex API

1MP / image$0.05
2MP / image$0.10
3MP / image$0.15
4MP / image$0.20
ImageBlack Forest LabsText & image to image
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About FLUX 2 Flex

FLUX 2 Flex by Black Forest Labs is available on API Many from $0.05 / image, and you call it with the same API key you use for every other model.

Send a prompt — and reference images when the model supports them — to /v1/images/generations. The job runs asynchronously and the finished images stay downloadable for 30 days.

You pay only for successful results: failed or rejected requests are refunded automatically, and every call is recorded in your console with its exact cost.

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Frequently asked questions

How much does the FLUX 2 Flex API cost?

FLUX 2 Flex starts at $0.05 / image on API Many. The price table on this page lists every tier; you are charged only for successful requests.

How do I call FLUX 2 Flex?

Create an API key in the console, then send a request to /v1/images/generations with "model": "flux-2-flex". The API tab has copy-ready examples in cURL, Python and Node.js.

Is this the official FLUX 2 Flex model?

Yes. Requests are forwarded to the model maker or an authorized channel with the same parameters, so the output matches the official API.

What happens if a request fails?

Failed, rejected or timed-out requests are not charged. Reserved balance is released automatically and the reason is shown in the call record.