nano-banana
Installation
SKILL.md
Nano Banana Prompting Guide
Facts in this skill are verified against Google's official Gemini API docs, last checked 2026-11-06. See "Verification & Sources" at the bottom. Model IDs and prices change - re-verify before quoting them in a deliverable.
Model Lineup
Nano Banana is Google's marketing name for Gemini's native image generation. Five models are exposed via the Gemini API, all of them Stable, two of them deprecated:
| Marketing name | Model code | Status | Updated | Best for |
|---|---|---|---|---|
| Nano Banana 2.1 | gemini-nano-banana-2.1 |
Stable (GA 2026-10-06) | Oct 2026 | Default workhorse, Google's recommendation for all new projects. 1K-4K, web + image search grounding, 14 aspect ratios, up to 14 reference images, video and PDF input |
| Nano Banana 2 Lite | gemini-3.1-flash-lite-image |
Stable (GA 2026-06-30) | Jun 2026 | Latency: sub-2s, lowest input and thinking cost, fast local edits. 1K only |
| Nano Banana Pro | gemini-3-pro-image |
Stable (GA 2026-05-28) | Nov 2025 | Studio-quality precision, dense/accurate text, complex graphic design, factual data visualizations, brand consistency |
| Nano Banana 2 | gemini-3.1-flash-image |
⚠️ Deprecated 2026-10-06, no shutdown date announced | Feb 2026 | Existing code only. Migrate to Nano Banana 2.1 |
| Nano Banana (legacy) | gemini-2.5-flash-image |
⚠️ Deprecated - shutdown 2027-03-15 | Oct 2025 | Nothing new. Migrate to Nano Banana 2 Lite |
Note the naming: gemini-nano-banana-2.1 drops the gemini-<version>-flash-image pattern. It is an update to Nano Banana 2, not a different product line, so do not guess its ID from the old scheme.