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Nano Banana 2 (Gemini 3.1 Flash Image) google
Release timeline
Stages observed by the nightly radar: announced → API only → weights public → served by third parties. Each entry carries the source it was seen at.
- 2026-06-18 · API only source seeded from the earliest dated observation when first seen · observed 2026-10-07 20:20 UTC
Description
Gemini 3.1 Flash Image, a.k.a. "Nano Banana 2," is Google’s latest state of the art image generation and editing model, delivering Pro-level visual quality at Flash speed. It combines advanced...
via OpenRouter listing · observed 2026-10-24 21:26 UTC. The listing text is the provider's own description, not an assessment.
Where to run 2 providers · 3 endpoints
Hosted endpoints observed for Nano Banana 2 (Gemini 3.1 Flash Image), sorted by input price (USD per million tokens). Each row names its observer and date; prices change daily, so check the source before quoting. Cheapest observed input price: $0.50/M.
| Provider | Model ref | Context | Quant | $/M in | $/M out | tok/s | TTFT | Tools | Status | Observed |
|---|---|---|---|---|---|---|---|---|---|---|
| Google openrouter | google/gemini-3.1-flash-image | 128K | unknown | $0.50 | $3.00 | — | — | — | live | 2026-10-24 |
| Google AI Studio openrouter | google/gemini-3.1-flash-image | 64K | unknown | $0.50 | $3.00 | — | — | — | live | 2026-10-24 |
| Google openrouter | google/gemini-3.1-flash-image | 128K | unknown | $0.55 | $3.30 | — | — | — | live | 2026-10-24 |
No third-party providers observed beyond the lab's own endpoints.
Facts
| Context length | 131,072 tokens (128K) · OpenRouter listing |
|---|---|
| Modalities | image + text → image + text |
| Max completion tokens | 32,768 |
| Supported parameters | include_reasoning, max_tokens, reasoning, reasoning_effort, response_format, seed, structured_outputs, temperature, top_p |
| Openness | Closed weights · closed lab |
| Stage | API only |
| Confidence | medium |
| Pricing (USD per M tokens) |
in $0.50 · out $3.00 OpenRouter list price (cheapest live endpoint) · source · observed 2026-10-24 21:26 UTC |
Open alternatives 5
Nearest open-weights models by modality, context and price on this watch list. Not a quality ranking.
| Model | Org | Params | Context | $/M in | License | Why it is here |
|---|---|---|---|---|---|---|
| gemma-4-E4B-it | 8.00B | 128K | — | apache-2.0 | similar context (131K), vision input | |
| Qwen2.5-VL-7B-Instruct | Qwen | 8.29B | 125K | — | apache-2.0 | similar context (128K), vision input |
| Kimi-K2.6 | moonshotai | 1.03T | 256K | $0.45 | other | cheaper input price ($0.44935/M vs $0.5/M), vision input |
| Qwen3.5-397B-A17B | Qwen | 403B | 256K | $0.39 | apache-2.0 | cheaper input price ($0.39/M vs $0.5/M), vision input |
| Kimi-K2.5 | moonshotai | 1.03T | 256K | $0.45 | other | cheaper input price ($0.45/M vs $0.5/M), vision input |
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Sources
- openrouter google/gemini-3.1-flash-image · observed 2026-10-24 21:26 UTC
Radar run: 2026-10-25 06:51 UTC · Last verified 2026-10-25 06:51 UTC