Nano Banana 2 API Tiers: Lite, Base or Pro on Siray

Three Nano Banana tiers are now live on Siray, and the price ladder between them is not evenly spaced. Moving from Lite to Base costs 19 percent more. Moving from Base to Pro costs three times as much. That shape means the real decision is never Lite versus Base, it is whether a job needs Pro at all. What Nano Banana 2 is is covered elsewhere; this is about which endpoint to call.

Key Takeaways

• Lite to Base is +19 percent. Base to Pro is 3.06x.
• Lite is locked to a single 1k size tier. That is the trade for the lower price.
• Pro is not a superset of Base: it drops 512 and offers 10 aspect ratios against Base's 15.
• All three accept up to 14 input images on the editing endpoints.

Per-image pricing

Note the naming: Lite's editing endpoint is -lite-edit, not -lite-i2i. It is the only -edit suffix in the family, and it is an easy line to get wrong in a config file.

Lite: the draft tier

Lite runs at 1k and only 1k. There is no 512 for thumbnails and no 2k or 4k for delivery. Everything else about the tier is competitive, including a 14-image input ceiling on -lite-edit, so the single locked size is the entire cost of the discount.

That makes Lite a genuine iteration tier rather than a cheap Base. Explore compositions, run high-volume edits, generate social crops at web resolution. When the output is final and needs to be large, Lite cannot deliver it at any price.

Base: the default

Base covers 512, 1k, 2k and 4k, with 15 aspect ratios including the extremes: 8:1, 1:8, 4:1 and 21:9. Banner crops and tall mobile formats come out of the model rather than out of a post-process crop, which matters more than it sounds for anything where composition has to survive the aspect ratio.

At $0.032 against Lite's $0.027, the upgrade costs half a cent per image for the full size range. For most production work that is the tier to start from.

Pro: when 3x is worth it

Pro is the prompt-adherence tier. Hard compositional instructions, dense text in image, and multi-subject scenes are where the premium shows up, and for final client deliverables that is often the whole job.

The honest counterweight is that Pro gives something up. It has no 512 size, and it exposes 10 aspect ratios rather than 15 — the extreme banner and panoramic ratios available on Base are not there. Paying triple can cost an aspect ratio that was already working. Check the ratio before switching a pipeline over.

One more note for anyone comparing across families: no Nano Banana endpoint exposes a seed or a negative_prompt. Reproducibility and negative prompting both work differently here than on Qwen or Flux tiers.

Picking in one line

Draft and iterate on Lite, ship on Base, escalate to Pro only when prompt adherence is the bottleneck and the aspect ratio survives the move. For the first-generation endpoints, note that nano-banana-i2i accepts only 1 to 2 input images at the same $0.027 as Lite, which makes it hard to justify for editing work today. Earlier coverage sits at the original Nano Banana piece and the gen-2 follow-up.

Start generating

All eight endpoints sit behind one API key, so moving between tiers is a string change rather than an integration. Create your free Siray account and start generating with Nano Banana 2 now.