Llama 3.1 Nemotron Nano VL 8B v1 vs Phi-4 Reasoning Vision 15B
Llama 3.1 Nemotron Nano VL 8B v1 (2025) and Phi-4 Reasoning Vision 15B (2026) are compact production models from NVIDIA AI and Microsoft Research. Llama 3.1 Nemotron Nano VL 8B v1 ships a 4K-token context window, while Phi-4 Reasoning Vision 15B ships a not-yet-sourced 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.
Phi-4 Reasoning Vision 15B is safer overall; choose Llama 3.1 Nemotron Nano VL 8B v1 when vision-heavy evaluation matters.
Decision scorecard
Local evidence first| Signal | Llama 3.1 Nemotron Nano VL 8B v1 | Phi-4 Reasoning Vision 15B |
|---|---|---|
| Decision fit | Vision | Vision |
| Context window | 4K | — |
| Cheapest output | - | - |
| Provider routes | 1 tracked | 0 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Llama 3.1 Nemotron Nano VL 8B v1 has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Llama 3.1 Nemotron Nano VL 8B v1 has broader tracked provider coverage for fallback and procurement flexibility.
- Llama 3.1 Nemotron Nano VL 8B v1 uniquely exposes Vision in local model data.
- Local decision data tags Llama 3.1 Nemotron Nano VL 8B v1 for Vision.
- Local decision data tags Phi-4 Reasoning Vision 15B for Vision.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output prices on this page.
Llama 3.1 Nemotron Nano VL 8B v1
Unavailable
No complete token price in local provider data
Phi-4 Reasoning Vision 15B
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 Llama 3.1 Nemotron Nano VL 8B v1 and Phi-4 Reasoning Vision 15B; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Vision before moving production traffic.
- No overlapping tracked provider route is sourced for Phi-4 Reasoning Vision 15B and Llama 3.1 Nemotron Nano VL 8B v1; plan for SDK, billing, or endpoint changes.
- Llama 3.1 Nemotron Nano VL 8B v1 adds Vision in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-03-01 | 2026-03-12 |
| Context window | 4K | — |
| Parameters | 8B | 15B |
| Architecture | decoder only | - |
| License | 1 | Microsoft Research |
| Knowledge cutoff | - | 2025-03 |
Pricing and availability
| Pricing attribute | Llama 3.1 Nemotron Nano VL 8B v1 | Phi-4 Reasoning Vision 15B |
|---|---|---|
| Input price | - | - |
| Output price | - | - |
| Providers | - |
Pricing not yet sourced for either model.
Capabilities
| Capability | Llama 3.1 Nemotron Nano VL 8B v1 | Phi-4 Reasoning Vision 15B |
|---|---|---|
| Vision | Yes | No |
| Multimodal | Yes | Yes |
| Reasoning | No | No |
| Function calling | No | No |
| Tool use | No | No |
| Structured outputs | No | No |
| Code execution | No | No |
Benchmarks
No shared benchmark rows are currently sourced for this pair.
Deep dive
The capability footprint differs most on vision: Llama 3.1 Nemotron Nano VL 8B v1. Both models share 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.
Pricing coverage is uneven: Llama 3.1 Nemotron Nano VL 8B v1 has no token price sourced yet and Phi-4 Reasoning Vision 15B 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 Llama 3.1 Nemotron Nano VL 8B v1 when vision-heavy evaluation and broader provider choice are central to the workload. Choose Phi-4 Reasoning Vision 15B when provider fit are more important. For production, rerun your own prompts through the exact provider, region, and tool stack you plan to ship. This keeps the decision grounded in measurable tradeoffs instead of brand-level assumptions. It also helps separate model capability from provider packaging, which can change cost and latency.
FAQ
Is Llama 3.1 Nemotron Nano VL 8B v1 or Phi-4 Reasoning Vision 15B open source?
Llama 3.1 Nemotron Nano VL 8B v1 is listed under 1. Phi-4 Reasoning Vision 15B is listed under Microsoft Research. 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, Llama 3.1 Nemotron Nano VL 8B v1 or Phi-4 Reasoning Vision 15B?
Llama 3.1 Nemotron Nano VL 8B v1 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, Llama 3.1 Nemotron Nano VL 8B v1 or Phi-4 Reasoning Vision 15B?
Both Llama 3.1 Nemotron Nano VL 8B v1 and Phi-4 Reasoning Vision 15B 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 Llama 3.1 Nemotron Nano VL 8B v1 and Phi-4 Reasoning Vision 15B?
Llama 3.1 Nemotron Nano VL 8B v1 is available on NVIDIA NIM. Phi-4 Reasoning Vision 15B is available on the tracked providers still being sourced. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
When should I pick Llama 3.1 Nemotron Nano VL 8B v1 over Phi-4 Reasoning Vision 15B?
Phi-4 Reasoning Vision 15B is safer overall; choose Llama 3.1 Nemotron Nano VL 8B v1 when vision-heavy evaluation matters. If your workload also depends on vision-heavy evaluation, start with Llama 3.1 Nemotron Nano VL 8B v1; if it depends on provider fit, run the same evaluation with Phi-4 Reasoning Vision 15B.
Continue comparing
Last reviewed: 2026-05-01. Data sourced from public model cards and provider documentation.