Nano Banana 2 (Gemini 3.1 Flash Image Preview)
Nano Banana 2 (Gemini 3.1 Flash Image Preview) is a legacy integration reference; evaluate Nano Banana 2 (Gemini 3.1 Flash Image) before starting new work.
Use it for
- Teams maintaining an existing integration
- Workloads that can use a 66k context window
Do not use it for
- New production launches
- Cost-sensitive launches that need sourced token pricing
- Vision or document-understanding workloads
- Family
- Gemini 3.1
- Released
- 2026-03-03
- Context
- 66k
- Architecture
- Decoder Only
- Knowledge cutoff
- 2025-01
- Specialization
- general
- Openness
- Proprietary
- License
- ProprietaryCommercial use: conditional
No tracked provider token pricing is available yet.
This model is deprecated. Google DeepMind recommends switching to Nano Banana 2 (Gemini 3.1 Flash Image).
About
Preview release of Nano Banana 2 for Gemini 3.1 Flash Image. Google released the GA gemini-3.1-flash-image model on 2026-05-28 and will retire this preview API ID on 2026-06-25.
Nano Banana 2 (Gemini 3.1 Flash Image Preview) is a proprietary model in the Gemini 3.1 family. The structured metadata tracks a 66k-token context window. This page tracks provider routes through Google AI Studio, GCP Vertex AI, OpenRouter, and 1 more, with the cheapest tracked route listed at $0.5 input and $3 output per 1M tokens. No headline benchmark score is tracked for Nano Banana 2 (Gemini 3.1 Flash Image Preview) yet.
Top use-case fit
No primary decision-task fit is mapped for this model yet.
Provider price ladder
Compare all 4No tracked provider token pricing is available for this model yet.
Available via routers & gateways(13)
LiteLLM
GatewayOpen-source Python SDK and proxy server that unifies 100+ LLM APIs behind a single OpenAI-compatible interface, with load balancing, cost tracking, and configurable failover.
OpenRouter
HybridUnified hybrid gateway to 400+ models from 60+ providers via a single OpenAI-compatible API, with optional auto-routing that selects the best model per prompt.
Portkey
GatewayProduction AI gateway routing to 1,600+ LLMs with failover, load balancing, semantic caching, and guardrails; Apache 2.0 core is fully self-hostable with the complete feature set.
AIRouter
RouterCommercial LLM router that analyzes incoming requests and routes to the optimal model for cost/quality/latency via a drop-in OpenAI-compatible API, with a privacy-preserving embedding mode that avoids sending prompt content.
Helicone
GatewayObservability-first AI gateway with routing, caching, rate limiting, and request tracing; Apache 2.0 open-source core with a managed hosted tier for logging and analytics.
Kong AI Gateway
GatewayMulti-LLM AI gateway built on Kong Gateway 3.x, adding semantic routing, load balancing, guardrails, and MCP traffic analytics as plugins over Kong's existing API management platform.
Capabilities
No model capability flags are currently sourced.
Benchmark peer barsfor Coding
No task-mapped benchmark peers are available for this model yet.
Migration checks
No linked migration route is available for this model yet.
Frequently asked questions
What is the context window of Nano Banana 2 (Gemini 3.1 Flash Image Preview)?
Nano Banana 2 (Gemini 3.1 Flash Image Preview) has a context window of 66k tokens.
How much does Nano Banana 2 (Gemini 3.1 Flash Image Preview) cost?
Nano Banana 2 (Gemini 3.1 Flash Image Preview) is available at $0.5/1M input tokens through Google AI Studio.
When was Nano Banana 2 (Gemini 3.1 Flash Image Preview) released?
Nano Banana 2 (Gemini 3.1 Flash Image Preview) was released on 2026-03-03.
Which providers offer Nano Banana 2 (Gemini 3.1 Flash Image Preview)?
Nano Banana 2 (Gemini 3.1 Flash Image Preview) is available from 4 providers: Google AI Studio, GCP Vertex AI, OpenRouter, Vercel AI Gateway.
No tracked provider token pricing is available yet.