# FLUX.2 [flex] (Black Forest Labs) — API pricing and providers

> Text-to-image with adjustable steps/guidance, strong typography. Model id `bfl/flux-2-flex`. Image model by Black Forest Labs.

- Page: https://infro.io/models/bfl/flux-2-flex
- Vendor: Black Forest Labs (https://infro.io/models/bfl)
- Modality: Image
- Endpoint through INFRO: `POST /v1/images/generations` at https://api.infro.io/v1
- List rate: $0.05 per image
- Rates checked: 2026-10-05

Rates are Black Forest Labs's published list price: what the customer's own provider account bills, not an INFRO charge. INFRO is a BYOK control plane; it charges a software subscription and adds 0% to model spend.

## Providers that serve it

| Provider | Model id sent |
| --- | --- |
| OpenRouter | `black-forest-labs/flux.2-flex` |
| LaoZhang API | `flux-2-flex` |
| fal.ai | `flux-2-flex` |
| Replicate | `black-forest-labs/flux-2-flex` |

## Questions

### How much does the FLUX.2 [flex] API cost?

Black Forest Labs's published list rate for FLUX.2 [flex] is $0.05 per image (checked 2026-10-05). The provider account you connect bills you at the rate on that account, so a negotiated rate replaces the list rate. INFRO adds 0% to model spend.

### Which providers serve FLUX.2 [flex]?

In INFRO's provider registry, FLUX.2 [flex] can be served by OpenRouter, LaoZhang API, fal.ai and Replicate. You connect your own account with any of them, and INFRO routes and fails over between the ones you connect.

### What is the FLUX.2 [flex] model ID?

Request it from INFRO as "bfl/flux-2-flex". INFRO sends each provider its own id: OpenRouter "black-forest-labs/flux.2-flex", LaoZhang API "flux-2-flex", fal.ai "flux-2-flex", Replicate "black-forest-labs/flux-2-flex".

### How do I call FLUX.2 [flex] through an OpenAI-compatible API?

Point an OpenAI SDK, or any HTTP client, at https://api.infro.io/v1 with an INFRO gateway key and send model "bfl/flux-2-flex" to POST /v1/images/generations. INFRO runs the request on a provider account you connected and returns the provider's response with an estimated cost.

### Does INFRO mark up FLUX.2 [flex] usage?

No. Black Forest Labs or the provider you connect bills model usage to your own account. INFRO charges a software subscription for routing, failover, observability, budgets and policy, and takes 0% of model spend.