Nano Banana 2.1

Release facts and lifecycle

General availability

October 6, 2026

Model ID

gemini-nano-banana-2.1

Task

Image generation and conversational editing

Announced resolutions

1K, 2K and 4K

Announced panorama ratios

1:4, 4:1, 1:8 and 8:1

Original provider sources checked 2026-10-10. These are source facts, not a benchmark of Flonno's deployment.

Where to start

Score prompt adherence, rendered text, character consistency and preservation of unchanged regions. Keep source images, output size, edit count and rejection criteria fixed across candidates.

• Image generation
• Conversational editing
• Text rendering

What to check before deployment

Use image-specific quality criteria. The announcement supports wide and panoramic aspect ratios at 1K, 2K and 4K; output quality and billing still need checks on the real endpoint.

Confirm the exact model ID, checkpoint revision and endpoint in your test record. A base model name does not establish a provider's quantization, accepted inputs, context limit or current availability.

Measure useful results

Build a small evaluation from the workflow you already run. Define the expected answer before testing. Track correct results, formatting errors, retries, complete request time and reported input and output usage.

Count rejected answers and manual corrections. A low token rate can still produce a high cost per accepted result when the workflow needs retries or repair.

Sources and scope

This page is an editorial evaluation guide, not a benchmark result or a claim that this model is served by Flonno.

License / access: Provider service terms. Read the linked license or service terms for the full conditions. Original release and lifecycle sources checked 2026-10-10.