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Models/Google/Nano Banana 2.1
Googleimage3 routes

Nano Banana 2.1

Google's Nano Banana 2.1: text to image and image editing, up to 4K.

nano-banana-2.1Get API key

Pricing per image

SizePer image
1K$0.03lowest3 credits
2K$0.03lowest3 credits
4K$0.044 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 $REVANA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "nano-banana-2.1",
    "input": {
      "prompt": "A product photo of a ceramic coffee cup on a linen tablecloth, soft morning light",
      "resolution": "1K",
      "aspect_ratio": "16:9"
    }
  }')
echo "$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
Resolutions
1K2K4K
Aspect ratios
1:116:99:164:33:43:22:35:44:521:91:44:11:88:1
Input images
Up to 14
Billing unit
per image
Model id
nano-banana-2.1

3 routes

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

About the Nano Banana 2.1 API

How much does the Nano Banana 2.1 API cost?

Nano Banana 2.1 costs from $0.03 per image on Revana (1K: $0.03; 2K: $0.03; 4K: $0.04). 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 Nano Banana 2.1 from code?

Send POST https://api.revana.si/v1/generations with {"model": "nano-banana-2.1", "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 Nano Banana 2.1 generation fails?

Revana has 3 routes for Nano Banana 2.1. 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 Nano Banana 2.1 do on Revana?

Nano Banana 2.1 supports text to image and image to image, resolutions 1K, 2K, 4K, aspect ratios 1:1, 16:9, 9:16, 4:3, 3:4, 3:2, 2:3, 5:4, 4:5, 21:9, 1:4, 4:1, 1:8, 8:1 and up to 14 input images. A value it does not offer is refused with 422 before anything is charged.

Can my AI agent use Nano Banana 2.1?

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.