Nano Banana Pro (Gemini 3 Pro Image) vs Phi-4 Mini Reasoning
Nano Banana Pro (Gemini 3 Pro Image) (2026) and Phi-4 Mini Reasoning (2026) are frontier-tier reasoning models from Google DeepMind and Microsoft Research. Nano Banana Pro (Gemini 3 Pro Image) ships a 66k-token context window, while Phi-4 Mini Reasoning ships a 128k-token context window. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.
Nano Banana Pro (Gemini 3 Pro Image) is safer overall; choose Phi-4 Mini Reasoning when long-context analysis matters.
Decision scorecard
Local evidence first| Signal | Nano Banana Pro (Gemini 3 Pro Image) | Phi-4 Mini Reasoning |
|---|---|---|
| Best for | reasoning-heavy apps, multimodal apps, and tool-calling agents | reasoning-heavy apps |
| Decision fit | Agents, Vision, and JSON / Tool use | Long context |
| Context window | 66k | 128k |
| Cheapest output | $120/1M tokens | - |
| Provider routes | 1 tracked | 0 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Nano Banana Pro (Gemini 3 Pro Image) has broader tracked provider coverage for fallback and procurement flexibility.
- Nano Banana Pro (Gemini 3 Pro Image) uniquely exposes Vision, Multimodal, and Tool use in local model data.
- Local decision data tags Nano Banana Pro (Gemini 3 Pro Image) for Agents, Vision, and JSON / Tool use.
- Phi-4 Mini Reasoning has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Local decision data tags Phi-4 Mini Reasoning for Long context.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Nano Banana Pro (Gemini 3 Pro Image)
$31,600
Cheapest tracked route/tier: Google AI Studio
Phi-4 Mini Reasoning
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 Pro (Gemini 3 Pro Image) and Phi-4 Mini Reasoning; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Vision, Multimodal, and Tool use before moving production traffic.
- No overlapping tracked provider route is sourced for Phi-4 Mini Reasoning and Nano Banana Pro (Gemini 3 Pro Image); plan for SDK, billing, or endpoint changes.
- Nano Banana Pro (Gemini 3 Pro Image) adds Vision, Multimodal, and Tool use in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2026-05-28 | 2026-05-16 |
| Context window | 66k | 128k |
| Parameters | — | 3.8B |
| Architecture | decoder only | - |
| License | Proprietary | Proprietary |
| Knowledge cutoff | 2025-01 | 2025-02 |
Pricing and availability
| Pricing attribute | Nano Banana Pro (Gemini 3 Pro Image) | Phi-4 Mini Reasoning |
|---|---|---|
| Input price | $2/1M tokens | - |
| Output price | $120/1M tokens | - |
| Providers | - |
Capabilities
| Capability | Nano Banana Pro (Gemini 3 Pro Image) | Phi-4 Mini Reasoning |
|---|---|---|
| Vision | Yes | No |
| Multimodal | Yes | No |
| Reasoning | Yes | Yes |
| Function calling | No | No |
| Tool use | Yes | No |
| Structured outputs | Yes | No |
| Code execution | No | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
No shared benchmark rows are currently sourced for this pair.
Deep dive
The capability footprint differs most on vision: Nano Banana Pro (Gemini 3 Pro Image), multimodal input: Nano Banana Pro (Gemini 3 Pro Image), tool use: Nano Banana Pro (Gemini 3 Pro Image), and structured outputs: Nano Banana Pro (Gemini 3 Pro Image). Both models share reasoning mode, 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 Pro (Gemini 3 Pro Image) has $2/1M input tokens and Phi-4 Mini Reasoning has no token price sourced yet. Provider availability is 1 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 Pro (Gemini 3 Pro Image) when vision-heavy evaluation and broader provider choice are central to the workload. Choose Phi-4 Mini Reasoning when long-context analysis 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 Pro (Gemini 3 Pro Image) or Phi-4 Mini Reasoning?
Phi-4 Mini Reasoning supports 128k tokens, while Nano Banana Pro (Gemini 3 Pro Image) supports 66k tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Is Nano Banana Pro (Gemini 3 Pro Image) or Phi-4 Mini Reasoning open source?
Nano Banana Pro (Gemini 3 Pro Image) is listed under Proprietary. Phi-4 Mini Reasoning 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 Pro (Gemini 3 Pro Image) or Phi-4 Mini Reasoning?
Nano Banana Pro (Gemini 3 Pro Image) 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 Pro (Gemini 3 Pro Image) or Phi-4 Mini Reasoning?
Nano Banana Pro (Gemini 3 Pro Image) 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 Pro (Gemini 3 Pro Image) or Phi-4 Mini Reasoning?
Both Nano Banana Pro (Gemini 3 Pro Image) and Phi-4 Mini Reasoning expose reasoning mode. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface.
Where can I run Nano Banana Pro (Gemini 3 Pro Image) and Phi-4 Mini Reasoning?
Nano Banana Pro (Gemini 3 Pro Image) is available on Google AI Studio. Phi-4 Mini Reasoning 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: 2026-05-31. Data sourced from public model cards and provider documentation.