Gemini 2.5 Pro Computer Use Preview vs Nano Banana 2 (Gemini 3.1 Flash Image)
Gemini 2.5 Pro Computer Use Preview (2025) and Nano Banana 2 (Gemini 3.1 Flash Image) (2026) are frontier reasoning models from Google DeepMind. Gemini 2.5 Pro Computer Use Preview ships a 1.05m-token context window, while Nano Banana 2 (Gemini 3.1 Flash Image) ships a 131k-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 2 (Gemini 3.1 Flash Image) is ~150% cheaper at $0.50/1M; pay for Gemini 2.5 Pro Computer Use Preview only for long-context analysis.
Decision scorecard
Local evidence first| Signal | Gemini 2.5 Pro Computer Use Preview | Nano Banana 2 (Gemini 3.1 Flash Image) |
|---|---|---|
| Best for | multimodal apps, tool-calling agents, and long-context analysis | reasoning-heavy apps and multimodal apps |
| Decision fit | RAG, Agents, and Long context | Long context and Vision |
| Context window | 1.05m | 131k |
| Cheapest output | $10/1M tokens | $60/1M tokens |
| Provider routes | 2 tracked | 1 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Gemini 2.5 Pro Computer Use Preview has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Gemini 2.5 Pro Computer Use Preview has the lower cheapest tracked output price at $10/1M tokens.
- Gemini 2.5 Pro Computer Use Preview has broader tracked provider coverage for fallback and procurement flexibility.
- Gemini 2.5 Pro Computer Use Preview uniquely exposes Function calling, Tool use, and Structured outputs in local model data.
- Local decision data tags Gemini 2.5 Pro Computer Use Preview for RAG, Agents, and Long context.
- Nano Banana 2 (Gemini 3.1 Flash Image) uniquely exposes Reasoning in local model data.
- Local decision data tags Nano Banana 2 (Gemini 3.1 Flash Image) for Long context and Vision.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Gemini 2.5 Pro Computer Use Preview
$3,500
Cheapest tracked route/tier: Google AI Studio
Nano Banana 2 (Gemini 3.1 Flash Image)
$15,400
Cheapest tracked route/tier: Google AI Studio
Estimated monthly gap: $11,900. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- Provider overlap exists on Google AI Studio; start route-level A/B tests there.
- Nano Banana 2 (Gemini 3.1 Flash Image) is $50/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Check replacement coverage for Function calling, Tool use, and Structured outputs before moving production traffic.
- Nano Banana 2 (Gemini 3.1 Flash Image) adds Reasoning in local capability data.
- Provider overlap exists on Google AI Studio; start route-level A/B tests there.
- Gemini 2.5 Pro Computer Use Preview is $50/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Reasoning before moving production traffic.
- Gemini 2.5 Pro Computer Use Preview adds Function calling, Tool use, and Structured outputs in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-10-01 | 2026-05-28 |
| Context window | 1.05m | 131k |
| Parameters | — | — |
| Architecture | decoder only | decoder only |
| License | Proprietary | Proprietary |
| Openness | Proprietary | Proprietary |
| Commercial use | Commercial use with conditions | Commercial use with conditions |
| Knowledge cutoff | 2025-01 | 2025-01 |
Pricing and availability
| Pricing attribute | Gemini 2.5 Pro Computer Use Preview | Nano Banana 2 (Gemini 3.1 Flash Image) |
|---|---|---|
| Input price | $1.25/1M tokens | $0.50/1M tokens |
| Output price | $10/1M tokens | $60/1M tokens |
| Providers |
Capabilities
| Capability | Gemini 2.5 Pro Computer Use Preview | Nano Banana 2 (Gemini 3.1 Flash Image) |
|---|---|---|
| Vision | Yes | Yes |
| Multimodal | Yes | Yes |
| Reasoning | No | Yes |
| Function calling | Yes | 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 reasoning mode: Nano Banana 2 (Gemini 3.1 Flash Image), function calling: Gemini 2.5 Pro Computer Use Preview, tool use: Gemini 2.5 Pro Computer Use Preview, and structured outputs: Gemini 2.5 Pro Computer Use Preview. Both models share vision and multimodal input, 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.
For cost, Gemini 2.5 Pro Computer Use Preview lists $1.25/1M input and $10/1M output tokens on the cheapest tracked provider, while Nano Banana 2 (Gemini 3.1 Flash Image) lists $0.50/1M input and $60/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Gemini 2.5 Pro Computer Use Preview lower by about $14.48 per million blended tokens. Availability is 2 providers versus 1, so concentration risk also matters.
Choose Gemini 2.5 Pro Computer Use Preview when long-context analysis, larger context windows, and broader provider choice are central to the workload. Choose Nano Banana 2 (Gemini 3.1 Flash Image) when reasoning depth and lower input-token cost 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, Gemini 2.5 Pro Computer Use Preview or Nano Banana 2 (Gemini 3.1 Flash Image)?
Gemini 2.5 Pro Computer Use Preview supports 1.05m tokens, while Nano Banana 2 (Gemini 3.1 Flash Image) supports 131k tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Which is cheaper, Gemini 2.5 Pro Computer Use Preview or Nano Banana 2 (Gemini 3.1 Flash Image)?
Gemini 2.5 Pro Computer Use Preview is cheaper on tracked token pricing. Gemini 2.5 Pro Computer Use Preview costs $1.25/1M input and $10/1M output tokens. Nano Banana 2 (Gemini 3.1 Flash Image) costs $0.50/1M input and $60/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is Gemini 2.5 Pro Computer Use Preview or Nano Banana 2 (Gemini 3.1 Flash Image) open source?
Gemini 2.5 Pro Computer Use Preview is listed under Proprietary. Nano Banana 2 (Gemini 3.1 Flash Image) 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, Gemini 2.5 Pro Computer Use Preview or Nano Banana 2 (Gemini 3.1 Flash Image)?
Both Gemini 2.5 Pro Computer Use Preview and Nano Banana 2 (Gemini 3.1 Flash Image) expose vision. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface.
Which is better for multimodal input, Gemini 2.5 Pro Computer Use Preview or Nano Banana 2 (Gemini 3.1 Flash Image)?
Both Gemini 2.5 Pro Computer Use Preview and Nano Banana 2 (Gemini 3.1 Flash Image) expose multimodal input. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface.
Where can I run Gemini 2.5 Pro Computer Use Preview and Nano Banana 2 (Gemini 3.1 Flash Image)?
Gemini 2.5 Pro Computer Use Preview is available on Google AI Studio and GCP Vertex AI. Nano Banana 2 (Gemini 3.1 Flash Image) is available on Google AI Studio. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
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Last reviewed: 2026-06-05. Data sourced from public model cards and provider documentation.