📌 Executive Summary (TL;DR):
Kie.ai sells Nano Banana Pro (Gemini 3 Pro Image) at $0.09 per 1K/2K image and $0.12 per 4K image, already well below Google's $0.134. You can go lower.

• Best Overall Alternative: Vidgo API lists Nano Banana Pro at $0.04 (1K/2K) and $0.07 (4K), and Nano Banana 2 at $0.025 / $0.04 / $0.06 (1K / 2K / 4K), with failed jobs refunded automatically.
• Where Kie.ai still wins: Nano Banana 2.1 ($0.02 at 1K), Nano Banana 2 Lite ($0.02), and the original Nano Banana ($0.02) are a little cheaper on Kie.ai than Vidgo's $0.025 equivalents.

Prices were checked against public pricing pages in early October 2026.

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Who Sells Nano Banana Pro by API, and What It Costs

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The Whole Nano Banana Family: Kie.ai vs. Vidgo API

The rule of thumb: for the premium models (Pro and Nano Banana 2), Vidgo is 33%–56% cheaper. For the budget models (Lite, original, and 2.1), Kie.ai is cheaper by about half a cent per image.

At 100,000 Nano Banana Pro images a month at 2K, that is $9,000 on Kie.ai versus $4,000 on Vidgo API.

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Why Look Beyond Kie.ai for Nano Banana Pro

• Price on the premium tier. Pro is the model most teams use for text rendering, product shots, and multi-image edits, and it is where Kie.ai's discount is smallest (about 33% below Google at 1K/2K).
• HTTP 200 errors. Kie.ai returns errors with HTTP 200 and a code field. In a high-volume image pipeline, that means every response needs a body check before you count it as a success.
• Account-wide rate limit. 20 new tasks per 10 seconds per account. Image workloads hit this faster than video, because each job is short.
• 14-day retention. Generated images are deleted after 14 days.

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The Best Kie.ai Nano Banana Pro Alternatives

1. Vidgo API — Cheapest Nano Banana Pro and Nano Banana 2

Vidgo API serves Nano Banana Pro as nano-banana-2 (edit: nano-banana-2-edit) and Nano Banana 2 as nano-banana-2-new (edit: nano-banana-2-new-edit) through the same POST /api/generate/submit endpoint as its video and music models.

• Strengths: Lowest Pro and Nano Banana 2 prices we found, the same price for 1K and 2K on Pro, automatic refunds, and one integration for image, video, music, and chat.
• Trade-offs: Nano Banana 2.1 is not listed yet, and the Lite and original models cost half a cent more than on Kie.ai. The model naming is not obvious, so keep a mapping table.

2. PoYo.ai — Image Generation Next to Chat

PoYo.ai offers the Nano Banana family alongside Claude, Gemini, and GPT chat, which suits agent products that plan with an LLM and render with Nano Banana. Credits do not expire.

3. APIDot — Backup Image Endpoint

APIDot is a budget aggregator that does not charge for failed requests. It works well as a second provider when you hit rate limits on your main one.

4. Google Gemini API — First-Party Access

Going direct costs $0.134 per 1K/2K image and $0.24 per 4K image, but you get Google's SLA and new features first.

5. fal.ai and Replicate — The Most Expensive Routes

Both list Nano Banana Pro at $0.15 (1K/2K) and $0.30 (4K), above Google's own price. Use them only if you already depend on their other features.

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Code: Kie.ai vs. Vidgo API for Nano Banana Pro

# Kie.ai
curl -X POST https://api.kie.ai/api/v1/jobs/createTask \
  -H "Authorization: Bearer $KIE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "nano-banana-pro",
    "callBackUrl": "https://your-domain.com/api/callback",
    "input": {
      "prompt": "studio product shot of a ceramic mug with the word MORNING on it",
      "aspect_ratio": "1:1",
      "resolution": "2K"
    }
  }'

# Vidgo API (Nano Banana Pro is served as "nano-banana-2")
curl -X POST https://api.vidgo.ai/api/generate/submit \
  -H "Authorization: Bearer $VIDGO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "nano-banana-2",
    "callback_url": "https://your-domain.com/api/webhook",
    "input": {
      "prompt": "studio product shot of a ceramic mug with the word MORNING on it"
    }
  }'

Resolution, aspect ratio, and reference-image fields are listed on each model page in the Vidgo API docs.

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Which Nano Banana Provider Should You Use?

Which Nano Banana model do you call most?
 │
 ├── Nano Banana Pro (any resolution) ──► 【Vidgo API】
 ├── Nano Banana 2 (1K / 2K / 4K) ──────► 【Vidgo API】
 ├── Nano Banana 2.1 ───────────────────► 【Kie.ai】
 ├── Nano Banana 2 Lite / original ─────► 【Kie.ai】 (half a cent cheaper)
 └── Need Google's SLA ─────────────────► 【Google Gemini API】

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FAQ

What is the cheapest Nano Banana Pro API in 2026?

Vidgo API, at $0.04 per 1K/2K image and $0.07 per 4K image. Kie.ai is $0.09 and $0.12, Google is $0.134 and $0.24, and fal.ai and Replicate are $0.15 and $0.30.

Is Kie.ai cheaper than Vidgo for any Nano Banana model?

Yes. Kie.ai is cheaper for Nano Banana 2.1, Nano Banana 2 Lite, and the original Nano Banana, all at $0.02 per image versus Vidgo's $0.025 where listed.

Is Nano Banana Pro the same as Gemini 3 Pro Image?

Yes. Nano Banana Pro is the nickname for Google's Gemini 3 Pro Image model.

Are failed Nano Banana generations charged?

Not on Kie.ai or Vidgo API. Kie.ai does not charge failed jobs, and Vidgo refunds them automatically.

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👉 Try Nano Banana Pro on Vidgo API with free trial credits.