Nano Banana 2 (Gemini 3.1 Flash Image) vs Grok Build 0.1
Nano Banana 2 (Gemini 3.1 Flash Image) (2026) and Grok Build 0.1 (2026) compare a standalone API model against a coding-specialized model. Nano Banana 2 (Gemini 3.1 Flash Image) ships a 131k-token context window, while Grok Build 0.1 ships a 256k-token context window. This page treats the result as workflow and deployment fit, not a universal model winner.
Treat this as a product-type comparison: Nano Banana 2 (Gemini 3.1 Flash Image) is standalone API model, while Grok Build 0.1 is coding-specialized model. Choose based on workflow fit before reading any benchmark or price row as decisive.
Decision scorecard
Local evidence first| Signal | Nano Banana 2 (Gemini 3.1 Flash Image) | Grok Build 0.1 |
|---|---|---|
| Product type | Standalone API model | Coding-specialized model |
| Best for | reasoning-heavy apps and multimodal apps | custom coding agents, code generation, and tool loops |
| Decision fit | Long context and Vision | Coding, RAG, and Agents |
| Context window | 131k | 256k |
| Cheapest output | $60/1M tokens | $2/1M tokens |
| Provider routes | 1 tracked | 3 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Nano Banana 2 (Gemini 3.1 Flash Image) uniquely exposes Vision and Multimodal in local model data.
- Local decision data tags Nano Banana 2 (Gemini 3.1 Flash Image) for Long context and Vision.
- Grok Build 0.1 has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Grok Build 0.1 has the lower cheapest tracked output price at $2/1M tokens.
- Grok Build 0.1 has broader tracked provider coverage for fallback and procurement flexibility.
- Grok Build 0.1 uniquely exposes Function calling, Tool use, and Structured outputs in local model data.
- Local decision data tags Grok Build 0.1 for Coding, RAG, and Agents.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Nano Banana 2 (Gemini 3.1 Flash Image)
$15,400
Cheapest tracked route/tier: Google AI Studio
Grok Build 0.1
$1,300
Cheapest tracked route/tier: xAI Console
Estimated monthly gap: $14,100. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- No overlapping tracked provider route is sourced for Nano Banana 2 (Gemini 3.1 Flash Image) and Grok Build 0.1; plan for SDK, billing, or endpoint changes.
- Grok Build 0.1 is $58/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Vision and Multimodal before moving production traffic.
- Grok Build 0.1 adds Function calling, Tool use, and Structured outputs in local capability data.
- No overlapping tracked provider route is sourced for Grok Build 0.1 and Nano Banana 2 (Gemini 3.1 Flash Image); plan for SDK, billing, or endpoint changes.
- Nano Banana 2 (Gemini 3.1 Flash Image) is $58/1M 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 Vision and Multimodal in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2026-05-28 | 2026-05-14 |
| Context window | 131k | 256k |
| Parameters | — | — |
| Architecture | decoder only | - |
| License | Proprietary | Proprietary |
| Knowledge cutoff | 2025-01 | - |
Pricing and availability
| Pricing attribute | Nano Banana 2 (Gemini 3.1 Flash Image) | Grok Build 0.1 |
|---|---|---|
| Input price | $0.50/1M tokens |
|
| Output price | $60/1M tokens |
|
| Providers |
Capabilities
| Capability | Nano Banana 2 (Gemini 3.1 Flash Image) | Grok Build 0.1 |
|---|---|---|
| Vision | Yes | No |
| Multimodal | Yes | No |
| Reasoning | Yes | Yes |
| Function calling | No | Yes |
| Tool use | No | Yes |
| Structured outputs | No | Yes |
| 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 2 (Gemini 3.1 Flash Image), multimodal input: Nano Banana 2 (Gemini 3.1 Flash Image), function calling: Grok Build 0.1, tool use: Grok Build 0.1, and structured outputs: Grok Build 0.1. 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.
For cost, Nano Banana 2 (Gemini 3.1 Flash Image) lists $0.50/1M input and $60/1M output tokens on the cheapest tracked provider, while Grok Build 0.1 lists tiered pricing: 0-200,001t is $1/1M input and $2/1M output; 200,001t+ is $2/1M input and $4/1M output. A 70/30 input-output blend puts Grok Build 0.1 lower by about $17.05 per million blended tokens. For tiered rows, this cheapest-track view can understate interactive or fast-lane spend, so compare the tier you will actually use. Availability is 1 providers versus 3, so concentration risk also matters.
Choose Nano Banana 2 (Gemini 3.1 Flash Image) when vision-heavy evaluation and lower input-token cost are central to the workload. Choose Grok Build 0.1 when coding workflow support, larger context windows, and broader provider choice 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 2 (Gemini 3.1 Flash Image) or Grok Build 0.1?
Grok Build 0.1 supports 256k 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, Nano Banana 2 (Gemini 3.1 Flash Image) or Grok Build 0.1?
Nano Banana 2 (Gemini 3.1 Flash Image) lists $0.50/1M input and $60/1M output tokens on the cheapest tracked provider. Grok Build 0.1 lists tiered pricing: 0-200,001t is $1/1M input and $2/1M output; 200,001t+ is $2/1M input and $4/1M output. Compare the tier you will actually use; cheap async pricing can overstate savings for interactive workflows. Provider discounts or batch pricing can still change the final bill.
Is Nano Banana 2 (Gemini 3.1 Flash Image) or Grok Build 0.1 open source?
Nano Banana 2 (Gemini 3.1 Flash Image) is listed under Proprietary. Grok Build 0.1 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 2 (Gemini 3.1 Flash Image) or Grok Build 0.1?
Nano Banana 2 (Gemini 3.1 Flash 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 2 (Gemini 3.1 Flash Image) or Grok Build 0.1?
Nano Banana 2 (Gemini 3.1 Flash 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.
Where can I run Nano Banana 2 (Gemini 3.1 Flash Image) and Grok Build 0.1?
Nano Banana 2 (Gemini 3.1 Flash Image) is available on Google AI Studio. Grok Build 0.1 is available on xAI Console, Vercel AI Gateway, and OpenRouter. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
Continue comparing
Last reviewed: 2026-05-31. Data sourced from public model cards and provider documentation.