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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.

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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"
  }'

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Body parameters

FieldTypeRequiredDefaultNotes
modelstringyes—nano-banana-v2
promptstringyes—English-tuned.
sizestringno2048x2048Supported: 1024x1024, 2048x2048, 2048x1536, 1536x2048.
nintegerno11–2 images.
seedintegerno—Reproducibility.
aspect_ratiostringno—1:1 / 9:16 / 16:9 / 4:3 / 3:4.
qualitystringno"standard""standard" / "hd".

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Response

{
  "created": 1715174400,
  "data": [{"url": "https://cdn.bytespike.ai/img/...", "revised_prompt": "..."}]
}
URLs pre-signed, 24h expiry.

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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"}'

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Errors

CodeTriggerBilled?
400 / 401 / 402 / 403StandardNo
451Prompt blocked by upstream safetyNo
5xxUpstream issueNo (auto-retry)

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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 Nano Banana.
  • For 2048² aesthetic / illustration, see Seedream V4.5.

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Limits

LimitValue
Max output resolution2048×2048
Max images per call (n)2
Supports init image (img2img)No
Supports quality modifierYes (standard / hd)
Supports seed reproductionYes
Sync?Yes (≤45s)
Avg latency for 2048² standard14-22s