Nano Banana (Gemini 2.5 Flash Image) vs Gemini Robotics-ER 1.6 Preview
Nano Banana (Gemini 2.5 Flash Image) (2025) and Gemini Robotics-ER 1.6 Preview (2026) are frontier reasoning models from Google DeepMind. Nano Banana (Gemini 2.5 Flash Image) ships a 33K-token context window, while Gemini Robotics-ER 1.6 Preview ships a 128K-token context window. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit. It focuses on practical selection signals rather than broad model-family marketing.
Gemini Robotics-ER 1.6 Preview is safer overall; choose Nano Banana (Gemini 2.5 Flash Image) when provider fit matters.
Decision scorecard
Local evidence first| Signal | Nano Banana (Gemini 2.5 Flash Image) | Gemini Robotics-ER 1.6 Preview |
|---|---|---|
| Decision fit | General | RAG, Agents, and Long context |
| Context window | 33K | 128K |
| Cheapest output | $30/1M tokens | - |
| Provider routes | 3 tracked | 0 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Nano Banana (Gemini 2.5 Flash Image) has broader tracked provider coverage for fallback and procurement flexibility.
- Gemini Robotics-ER 1.6 Preview has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Gemini Robotics-ER 1.6 Preview uniquely exposes Vision, Multimodal, and Reasoning in local model data.
- Local decision data tags Gemini Robotics-ER 1.6 Preview for RAG, Agents, and Long context.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output prices on this page.
Nano Banana (Gemini 2.5 Flash Image)
$7,740
Cheapest tracked route: Google AI Studio
Gemini Robotics-ER 1.6 Preview
Unavailable
No complete token price in local provider data
Cost delta unavailable until both models have sourced input and output token prices.
Switch friction
- No overlapping tracked provider route is sourced for Nano Banana (Gemini 2.5 Flash Image) and Gemini Robotics-ER 1.6 Preview; plan for SDK, billing, or endpoint changes.
- Gemini Robotics-ER 1.6 Preview adds Vision, Multimodal, and Reasoning in local capability data.
- No overlapping tracked provider route is sourced for Gemini Robotics-ER 1.6 Preview and Nano Banana (Gemini 2.5 Flash Image); plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Vision, Multimodal, and Reasoning before moving production traffic.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-04-01 | 2026-04-14 |
| Context window | 33K | 128K |
| Parameters | — | — |
| Architecture | decoder only | decoder only |
| License | Unknown | Proprietary |
| Knowledge cutoff | - | - |
Pricing and availability
| Pricing attribute | Nano Banana (Gemini 2.5 Flash Image) | Gemini Robotics-ER 1.6 Preview |
|---|---|---|
| Input price | $0.3/1M tokens | - |
| Output price | $30/1M tokens | - |
| Providers | - |
Capabilities
| Capability | Nano Banana (Gemini 2.5 Flash Image) | Gemini Robotics-ER 1.6 Preview |
|---|---|---|
| Vision | No | Yes |
| Multimodal | No | Yes |
| Reasoning | No | Yes |
| Function calling | No | Yes |
| Tool use | No | Yes |
| Structured outputs | No | Yes |
| Code execution | No | No |
Benchmarks
No shared benchmark rows are currently sourced for this pair.
Deep dive
The capability footprint differs most on vision: Gemini Robotics-ER 1.6 Preview, multimodal input: Gemini Robotics-ER 1.6 Preview, reasoning mode: Gemini Robotics-ER 1.6 Preview, function calling: Gemini Robotics-ER 1.6 Preview, tool use: Gemini Robotics-ER 1.6 Preview, and structured outputs: Gemini Robotics-ER 1.6 Preview. Both models share the core language-model surface, so the practical split is not just feature count. Use those differences to decide whether the page is about raw model quality, agentic coding support, multimodal ingestion, or predictable structured API behavior.
Pricing coverage is uneven: Nano Banana (Gemini 2.5 Flash Image) has $0.3/1M input tokens and Gemini Robotics-ER 1.6 Preview has no token price sourced yet. Provider availability is 3 tracked routes versus 0. Treat unknown pricing as an integration gap, then verify the route you will actually call before estimating production spend.
Choose Nano Banana (Gemini 2.5 Flash Image) when provider fit and broader provider choice are central to the workload. Choose Gemini Robotics-ER 1.6 Preview when reasoning depth and larger context windows are more important. For production, rerun your own prompts through the exact provider, region, and tool stack you plan to ship.
FAQ
Which has a larger context window, Nano Banana (Gemini 2.5 Flash Image) or Gemini Robotics-ER 1.6 Preview?
Gemini Robotics-ER 1.6 Preview supports 128K tokens, while Nano Banana (Gemini 2.5 Flash Image) supports 33K tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Is Nano Banana (Gemini 2.5 Flash Image) or Gemini Robotics-ER 1.6 Preview open source?
Nano Banana (Gemini 2.5 Flash Image) is listed under Unknown. Gemini Robotics-ER 1.6 Preview is listed under Proprietary. License labels affect whether you can self-host, redistribute weights, or rely only on hosted APIs, so confirm the upstream license before deployment.
Which is better for vision, Nano Banana (Gemini 2.5 Flash Image) or Gemini Robotics-ER 1.6 Preview?
Gemini Robotics-ER 1.6 Preview has the clearer documented vision signal in this comparison. If vision is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Which is better for multimodal input, Nano Banana (Gemini 2.5 Flash Image) or Gemini Robotics-ER 1.6 Preview?
Gemini Robotics-ER 1.6 Preview has the clearer documented multimodal input signal in this comparison. If multimodal input is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Which is better for reasoning mode, Nano Banana (Gemini 2.5 Flash Image) or Gemini Robotics-ER 1.6 Preview?
Gemini Robotics-ER 1.6 Preview has the clearer documented reasoning mode signal in this comparison. If reasoning mode is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run Nano Banana (Gemini 2.5 Flash Image) and Gemini Robotics-ER 1.6 Preview?
Nano Banana (Gemini 2.5 Flash Image) is available on Google AI Studio, GCP Vertex AI, and OpenRouter. Gemini Robotics-ER 1.6 Preview is available on the tracked providers still being sourced. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
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Last reviewed: 2026-05-11. Data sourced from public model cards and provider documentation.