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Models/Black Forest Labs/Flux Kontext Max
Black Forest Labsimage2 routes

Flux Kontext Max

Black Forest Labs's Flux Kontext Max: text to image and image editing.

flux-kontext-maxGet API key

Pricing per image

SizePer image
All settings$0.077 credits

Billed in credits per image (100 credits = $1, rounded up to a whole credit). Charged once, only for the route that succeeds. Failed attempts cost $0.00.

Request

# 1. Submit a generation and keep its id (a refusal prints {"error": {"message": ...}})
RESP=$(curl -s https://api.revana.si/v1/generations \
  -H "Authorization: Bearer $REVANA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "flux-kontext-max",
    "input": {
      "prompt": "A product photo of a ceramic coffee cup on a linen tablecloth, soft morning light"
    }
  }')
echo "$RESP"
ID=$(echo "$RESP" | jq -r .id)

# 2. Poll it until status is "succeeded" or "failed" (a failed one has error.message)
curl -s https://api.revana.si/v1/generations/$ID \
  -H "Authorization: Bearer $REVANA_API_KEY"

# 3. Download the file once it has succeeded
curl -L https://api.revana.si/v1/generations/$ID/content \
  -H "Authorization: Bearer $REVANA_API_KEY" \
  -o out.png

Set REVANA_API_KEY to your key. Full reference in the quickstart.

Options

Tasks
Text to imageImage to image
Input images
Up to 4
Billing unit
per image
Model id
flux-kontext-max

2 routes

Every request starts on the cheapest route. If it fails, the job moves to the next one automatically.

About the Flux Kontext Max API

How much does the Flux Kontext Max API cost?

Flux Kontext Max costs $0.07 per image on Revana. You pay in prepaid credits, 100 credits to the dollar, with no subscription or monthly minimum. A generation that fails costs nothing.

How do I call Flux Kontext Max from code?

Send POST https://api.revana.si/v1/generations with {"model": "flux-kontext-max", "input": {...}} and your Revana API key as a Bearer token, poll GET /v1/generations/{id} until it succeeds, then download GET /v1/generations/{id}/content. Every model on Revana takes the same request shape.

What happens if a Flux Kontext Max generation fails?

Revana has 2 routes for Flux Kontext Max. A job starts on the cheapest and moves to the next automatically if one fails. You are charged once, only for the route that delivers. A failed generation costs $0.00.

What can Flux Kontext Max do on Revana?

Flux Kontext Max supports text to image and image to image and up to 4 input images. A value it does not offer is refused with 422 before anything is charged.

Can my AI agent use Flux Kontext Max?

Yes. Connect the Revana MCP server (https://revana.si/api/mcp) to Claude, ChatGPT, Cursor or Codex, or have the agent call the REST API. The agent can list models, get a free quote and generate on your credits.

Guides

Compare with similar models

Also as markdown for agents. Every model and price: models.json.