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 2.1 before starting new work.
- Family
- Gemini 3.1
- Released
- 2026-03-03
- Lifecycle
- Retired June 25, 2026
- Context
- 66K
- Architecture
- Decoder Only
- Knowledge cutoff
- 2025-01
- Specialization
- general
- Openness
- Proprietary
- License
- ProprietaryRestricted
- Weights
- Not released
- Code
- Unknown
No tracked provider pricing is available yet.
No tracked provider pricing is available yet.
This model is deprecated. Google DeepMind recommends switching to Nano Banana 2.1.
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.
Providers
No active provider routes are tracked for this model.
Deprecated provider routes(4)
| Provider | Status | Catalog ID |
|---|---|---|
| Google AI Studio | DeprecatedRetired June 25, 2026 | — |
| GCP Vertex AI | DeprecatedRetired June 25, 2026 | — |
| OpenRouter | DeprecatedRetired June 25, 2026 | google/gemini-3.1-flash-image-preview |
| Vercel AI Gateway | DeprecatedRetired June 25, 2026 | google/gemini-3.1-flash-image-preview |
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 500+ models from 80+ providers via a single OpenAI-compatible API, with an optional Auto Router that selects a model per prompt from market spend data.
Portkey
GatewayProduction AI gateway routing to 1,600+ LLMs with failover, load balancing, caching, and guardrails; MIT-licensed open-source core is self-hostable. Now part of Palo Alto Networks as Prisma AIRS AI Gateway.
AIRouter
RouterCommercial LLM router (branded "AI Router" on its site) that picks the best model per request via a Decision API or an OpenAI-compatible Chat Completions endpoint, with a private selection mode that routes on anonymized patterns; sold as BYOK subscription plans priced by routed tokens.
Helicone
GatewayObservability-first AI gateway with routing, caching, rate limiting, and request tracing; Apache-2.0 open-source platform 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.