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Nano Banana 2.1 API Pricing and Cost per Image

Nano Banana 2.1 (gemini-nano-banana-2.1) is Google's image generation and editing model, released on Oct 6, 2026 as an update to Nano Banana 2. In the Gemini API it costs $30 per 1M image output tokens, which works out to $0.0336 per 1K image, $0.0504 per 2K image and $0.0756 per 4K image. That is half of what Nano Banana 2 charges per image.

Prompts cost more than before: $1.50 per 1M input tokens against $0.50 on Nano Banana 2. Nano Banana 2 shuts down on Oct 29, 2026, and Google lists 2.1 as its replacement.

Prices from Google's Gemini API pricing page, checked Oct 7, 2026.

Nano Banana 2.1 price per image

ResolutionTokensStandardBatch
1K (1024 × 1024)1,120$0.0336$0.0168
2K (2048 × 2048)1,680$0.0504$0.0252
4K (4096 × 4096)2,520$0.0756$0.0378
Per 1M tokensStandardBatch
Input (text, image, video)$1.50$0.75
Text and thinking output$7.50$3.75
Image output$30$15

Nano Banana 2.1 cost calculator

Nano Banana 2.1 estimate

Per image
$0.0339
Per day
$1.13
Per month
$33.90
Same job onPer imagePer month
Nano Banana 2.1$0.0339$33.90
Nano Banana 2$0.0673$67.30
Nano Banana 2 Lite$0.0336$33.65
Nano Banana Pro$0.1348$135

Per image = (image tokens × image rate + prompt tokens × input rate + text tokens × text output rate) ÷ 1,000,000. A month is 30 days.

Nano Banana 2.1 vs Nano Banana 2, 2 Lite and Pro

ModelAPI model IDInput / 1M0.5K image1K image2K image4K image
Nano Banana 2.1gemini-nano-banana-2.1$1.50—$0.0336$0.0504$0.0756
Nano Banana 2Shuts down Oct 29, 2026gemini-3.1-flash-image$0.50$0.0448$0.0672$0.1008$0.1512
Nano Banana 2 Litegemini-3.1-flash-lite-image$0.25—$0.0336——
Nano Banana Progemini-3-pro-image$2—$0.1344$0.1344$0.24

Nano Banana 2.1 is the default pick: the same $30 image rate as Nano Banana 2 Lite, with 2K and 4K output on top. At 1K the two cost the same per image ($0.0336), but Lite's prompts are cheaper ($0.25 vs $1.50 per 1M input tokens) and it only outputs 1K, so it suits thumbnails and high-volume drafts.

Nano Banana Pro charges $120 per 1M image tokens: $0.1344 for a 1K or 2K image and $0.24 for 4K. At 2K that is 2.7× the price of Nano Banana 2.1, so it only pays off when you need what the Pro model does better.

Nano Banana 2 is being retired. If you still use gemini-3.1-flash-image, moving to 2.1 halves the image part of your bill before the Oct 29, 2026 shutdown.

Worked example: 10,000 images a month

Say you generate 10,000 product shots a month at 2K, each from a 200-token text prompt.

  1. Image: 1,680 tokens × $30 ÷ 1M = $0.0504
  2. Prompt: 200 tokens × $1.50 ÷ 1M = $0.0003
  3. One month: ($0.0504 + $0.0003) × 10,000 = $507

Through the Batch API the same month costs $254. On Nano Banana 2 it would be $1,009, and on Nano Banana Pro $1,348.

What else adds to the bill

  • Thinking and text output. Any text the model writes back, including thinking tokens, is billed at $7.50 per 1M tokens. Higher thinking settings raise the cost of each image.
  • Reference images. Images you send for editing or as references are input tokens at $1.50 per 1M. Check usage_metadata in the API response for the exact count.
  • Search grounding. Grounding with Google Web and Image Search includes 5,000 free requests a month, shared across all Gemini 3.x models, then costs $14 per 1,000 requests.
  • Batch API. Jobs that can wait cost 50% less across input, text output and image output.

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