Nano Banana 2

Vendor: Google Model ID: nano-banana-v2 Capability: 2048² · photorealism · sharp text rendering · improved anatomy Pricing: per image, photoreal flagship tier (live rate) Nano Banana 2 is the current iteration of Google’s photoreal family. The two areas where it visibly improves over Pro: text rendering inside the image (book covers, signage, screen content) and the notorious anatomy edge cases (hand counts, face proportion at small scale). For pure material / lighting fidelity, Pro and 2 are comparable; for any brief that involves legible in-image text or human subjects, 2 is the safer pick.

Request

curl https://llm.bytespike.ai/v1/images/generations \
  -H "x-api-key: $BYTESPIKE_API_KEY" \
  -H "content-type: application/json" \
  -d '{
    "model": "nano-banana-v2",
    "prompt": "A cafe storefront with a chalk-board menu reading PASTEL DE NATA and AMERICANO",
    "size": "2048x2048"
  }'

Body parameters

Field	Type	Required	Default	Notes
`model`	string	yes	—	`nano-banana-v2`
`prompt`	string	yes	—	English-tuned.
`size`	string	no	`2048x2048`	Supported: `1024x1024`, `2048x2048`, `2048x1536`, `1536x2048`.
`n`	integer	no	1	1–2 images.
`seed`	integer	no	—	Reproducibility.
`aspect_ratio`	string	no	—	`1:1` / `9:16` / `16:9` / `4:3` / `3:4`.
`quality`	string	no	`"standard"`	`"standard"` / `"hd"`.

Response

{
  "created": 1715174400,
  "data": [{"url": "https://cdn.bytespike.ai/img/...", "revised_prompt": "..."}]
}

URLs pre-signed, 24h expiry.

Code examples

curl https://llm.bytespike.ai/v1/images/generations \
  -H "x-api-key: $BYTESPIKE_API_KEY" \
  -H "content-type: application/json" \
  -d '{"model": "nano-banana-v2", "prompt": "A cafe storefront chalk-board menu", "size": "2048x2048"}'

from openai import OpenAI

client = OpenAI(base_url="https://llm.bytespike.ai/v1", api_key="$BYTESPIKE_API_KEY")
resp = client.images.generate(
    model="nano-banana-v2",
    prompt="A cafe storefront with a chalk-board menu reading PASTEL DE NATA and AMERICANO",
    size="2048x2048",
)
print(resp.data[0].url)

import OpenAI from "openai"

const client = new OpenAI({
  baseURL: "https://llm.bytespike.ai/v1",
  apiKey: process.env.BYTESPIKE_API_KEY,
})
const resp = await client.images.generate({
  model: "nano-banana-v2",
  prompt: "A cafe storefront with a chalk-board menu reading PASTEL DE NATA and AMERICANO",
  size: "2048x2048",
})
console.log(resp.data[0].url)

Errors

Code	Trigger	Billed?
400 / 401 / 402 / 403	Standard	No
451	Prompt blocked by upstream safety	No
5xx	Upstream issue	No (auto-retry)

When to use

In-image text (signage, packaging, book covers, UI mockups).
Human subjects where hand / face anatomy must hold up at scale.
For prior generation hero photography, see Nano Banana Pro.
For lower cost iteration, see GPT-Image 2.

Limits

Limit	Value
Max output resolution	2048×2048
Max images per call (`n`)	2
Supports init image (img2img)	No
Supports `quality` modifier	Yes (`standard` / `hd`)
Supports seed reproduction	Yes
Sync?	Yes (≤45s)
Avg latency for 2048² standard	14-22s

API Reference

Protocol endpoints

OpenAI

Anthropic

DeepSeek

Moonshot

Zhipu

MiniMax

Image

Video

Account & billing

Utility

Request

Body parameters

Response

Code examples

Errors

When to use

Limits

​Request

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​Limits

Request

Body parameters

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Limits