VARIANTE · Black Forest Labs / Flux 2

Flux 2 flux-2-flex-text-to-image API

A model variant exposed through RunAPI's unified AI API.

Operational · image · Commercial use supported

# Works with Claude Code, Codex, Gemini CLI, Cursor, and 50+ agents
npx skills add runapi-ai/flux-2 -g

The -g flag installs globally so every project picks it up.

Or paste this prompt to your AI agent:

Install the Flux 2 skill for me:

1. Clone https://github.com/runapi-ai/flux-2
2. Copy the skills/flux-2/ directory into your
   user-level skills directory (e.g. ~/.claude/skills/
   for Claude Code, ~/.codex/skills/ for Codex).
3. Verify that SKILL.md is present.
4. Confirm the install path when done.

Switch variant

flux-2-flex-remix-image flux-2-pro-remix-image flux-2-pro-text-to-image

RESUMEN

Flux 2 flux-2-flex-text-to-image is available through the same RunAPI auth, SDKs, and agent skill workflow.

Unified endpoint
SDK snippets
Agent install path
Las generaciones fallidas no se cobran

PRECIOS

Las generaciones fallidas no se cobran

Text to image

$0.14-$0.24 / image

Output resolution: 1k $0.14

Output resolution: 2k $0.24

FICHA TÉCNICA

Model ID	flux-2-flex-text-to-image
Proveedor	Black Forest Labs
Modalidad	image
Task type	asynchronous
Facturación	call
Endpoint	/api/v1/flux_2/text_to_image
Commercial	Yes
Status	Operational

INICIO RÁPIDO

Quickstart — flux-2-flex-text-to-image

runapi.ai

curl -X POST https://runapi.ai/api/v1/flux_2/text_to_image \
  -H "Authorization: Bearer $RUNAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "flux-2-flex-text-to-image",
  "prompt": "Generate a photorealistic studio portrait of an astronaut holding a cat, dramatic rim lighting, 8K detail."
}'

import { Flux2Client } from "@runapi.ai/flux-2";

const client = new Flux2Client();
const result = await client.textToImage.run({
    model: "flux-2-flex-text-to-image",
    prompt: "Generate a photorealistic studio portrait of an astronaut holding a cat, dramatic rim lighting, 8K detail.",
});

require "runapi/flux_2"

client = RunApi::Flux2::Client.new
result = client.text_to_image.run(
    model: "flux-2-flex-text-to-image",
    prompt: "Generate a photorealistic studio portrait of an astronaut holding a cat, dramatic rim lighting, 8K detail."
)

@runapi.ai/flux-2 v1

CÓMO FUNCIONA