Nano Banana Pro (Gemini 3 Pro Image) vs Llama Guard 3 1B
Nano Banana Pro (Gemini 3 Pro Image) (2026) and Llama Guard 3 1B (2024) are frontier reasoning models from Google DeepMind and AI at Meta. Nano Banana Pro (Gemini 3 Pro Image) ships a 66k-token context window, while Llama Guard 3 1B 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.
Llama Guard 3 1B is ~1900% cheaper at $0.10/1M; pay for Nano Banana Pro (Gemini 3 Pro Image) only for reasoning depth.
Decision scorecard
Local evidence first| Signal | Nano Banana Pro (Gemini 3 Pro Image) | Llama Guard 3 1B |
|---|---|---|
| Best for | reasoning-heavy apps, multimodal apps, and tool-calling agents | general production evaluation |
| Decision fit | Agents, Vision, and JSON / Tool use | Long context and Classification |
| Context window | 66k | 128k |
| Cheapest output | $120/1M tokens | $0.10/1M tokens |
| Provider routes | 1 tracked | 1 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- Nano Banana Pro (Gemini 3 Pro Image) uniquely exposes Vision, Multimodal, and Reasoning in local model data.
- Local decision data tags Nano Banana Pro (Gemini 3 Pro Image) for Agents, Vision, and JSON / Tool use.
- Llama Guard 3 1B has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Llama Guard 3 1B has the lower cheapest tracked output price at $0.10/1M tokens.
- Local decision data tags Llama Guard 3 1B for Long context and Classification.
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
Llama Guard 3 1B
$105
Cheapest tracked route/tier: Fireworks AI
Estimated monthly gap: $31,495. 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 Pro (Gemini 3 Pro Image) and Llama Guard 3 1B; plan for SDK, billing, or endpoint changes.
- Llama Guard 3 1B is $120/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Vision, Multimodal, and Reasoning before moving production traffic.
- No overlapping tracked provider route is sourced for Llama Guard 3 1B and Nano Banana Pro (Gemini 3 Pro Image); plan for SDK, billing, or endpoint changes.
- Nano Banana Pro (Gemini 3 Pro Image) is $120/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Nano Banana Pro (Gemini 3 Pro Image) adds Vision, Multimodal, and Reasoning in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2026-05-28 | 2024-09-25 |
| Context window | 66k | 128k |
| Parameters | — | 1B |
| Architecture | Decoder Only | Decoder Only |
| License | Proprietary | Llama 2 Community |
| Openness | Proprietary | Open weights |
| Commercial use | Commercial use: conditional | Commercial use: conditional |
| Knowledge cutoff | 2025-01 | 2023-12 |
Pricing and availability
| Pricing attribute | Nano Banana Pro (Gemini 3 Pro Image) | Llama Guard 3 1B |
|---|---|---|
| Input price | $2/1M tokens | $0.10/1M tokens |
| Output price | $120/1M tokens | $0.10/1M tokens |
| Providers |
Capabilities
| Capability | Nano Banana Pro (Gemini 3 Pro Image) | Llama Guard 3 1B |
|---|---|---|
| Vision | Yes | No |
| Multimodal | Yes | No |
| Reasoning | Yes | No |
| 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 scores are currently available 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), reasoning mode: 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 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.
For cost, Nano Banana Pro (Gemini 3 Pro Image) lists $2/1M input and $120/1M output tokens on the cheapest tracked provider, while Llama Guard 3 1B lists $0.10/1M input and $0.10/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Llama Guard 3 1B lower by about $37.30 per million blended tokens. Availability is 1 providers versus 1, so concentration risk also matters.
Choose Nano Banana Pro (Gemini 3 Pro Image) when reasoning depth are central to the workload. Choose Llama Guard 3 1B when long-context analysis, larger context windows, 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, Nano Banana Pro (Gemini 3 Pro Image) or Llama Guard 3 1B?
Llama Guard 3 1B 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.
Which is cheaper, Nano Banana Pro (Gemini 3 Pro Image) or Llama Guard 3 1B?
Llama Guard 3 1B is cheaper on tracked token pricing. Nano Banana Pro (Gemini 3 Pro Image) costs $2/1M input and $120/1M output tokens. Llama Guard 3 1B costs $0.10/1M input and $0.10/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is Nano Banana Pro (Gemini 3 Pro Image) or Llama Guard 3 1B open source?
Nano Banana Pro (Gemini 3 Pro Image) is listed under Proprietary. Llama Guard 3 1B is listed under Llama 2 Community. 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 Llama Guard 3 1B?
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 Llama Guard 3 1B?
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.
Where can I run Nano Banana Pro (Gemini 3 Pro Image) and Llama Guard 3 1B?
Nano Banana Pro (Gemini 3 Pro Image) is available on Google AI Studio. Llama Guard 3 1B is available on Fireworks AI. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
Continue comparing
Last reviewed: 2026-06-15. Data sourced from public model cards and provider documentation.