Nemotron 3 Nano Omni vs Phi-4 Mini Reasoning
Nemotron 3 Nano Omni (2026) and Phi-4 Mini Reasoning (2026) are frontier reasoning models from NVIDIA AI and Microsoft Research. Nemotron 3 Nano Omni ships a 262k-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.
Phi-4 Mini Reasoning is safer overall; choose Nemotron 3 Nano Omni when long-context analysis matters.
Decision scorecard
Local evidence first| Signal | Nemotron 3 Nano Omni | Phi-4 Mini Reasoning |
|---|---|---|
| Best for | multimodal apps | reasoning-heavy apps |
| Decision fit | Long context, Vision, and Classification | Long context |
| Context window | 262k | 128k |
| Cheapest output | - | - |
| Provider routes | 1 tracked | 0 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Nemotron 3 Nano Omni has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Nemotron 3 Nano Omni has broader tracked provider coverage for fallback and procurement flexibility.
- Nemotron 3 Nano Omni uniquely exposes Multimodal in local model data.
- Local decision data tags Nemotron 3 Nano Omni for Long context, Vision, and Classification.
- Phi-4 Mini Reasoning uniquely exposes Reasoning in local model data.
- 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.
Nemotron 3 Nano Omni
Unavailable
No complete token price in local provider data
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 Nemotron 3 Nano Omni and Phi-4 Mini Reasoning; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Multimodal before moving production traffic.
- Phi-4 Mini Reasoning adds Reasoning in local capability data.
- No overlapping tracked provider route is sourced for Phi-4 Mini Reasoning and Nemotron 3 Nano Omni; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Reasoning before moving production traffic.
- Nemotron 3 Nano Omni adds Multimodal in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2026-04-28 | 2026-05-16 |
| Context window | 262k | 128k |
| Parameters | 30B | 3.8B |
| Architecture | Hybrid Mamba-Transformer MoE | - |
| License | Open Source | Proprietary |
| Knowledge cutoff | - | 2025-02 |
Pricing and availability
| Pricing attribute | Nemotron 3 Nano Omni | Phi-4 Mini Reasoning |
|---|---|---|
| Input price | - | - |
| Output price | - | - |
| Providers | - |
Pricing not yet sourced for either model.
Capabilities
| Capability | Nemotron 3 Nano Omni | Phi-4 Mini Reasoning |
|---|---|---|
| Vision | No | No |
| Multimodal | Yes | No |
| Reasoning | No | Yes |
| Function calling | No | No |
| Tool use | No | No |
| Structured outputs | No | 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 multimodal input: Nemotron 3 Nano Omni and reasoning mode: Phi-4 Mini Reasoning. 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.
Pricing coverage is uneven: Nemotron 3 Nano Omni has no token price sourced yet 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 Nemotron 3 Nano Omni when long-context analysis, larger context windows, and broader provider choice are central to the workload. Choose Phi-4 Mini Reasoning when reasoning depth 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
Which has a larger context window, Nemotron 3 Nano Omni or Phi-4 Mini Reasoning?
Nemotron 3 Nano Omni supports 262k tokens, while Phi-4 Mini Reasoning supports 128k tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Is Nemotron 3 Nano Omni or Phi-4 Mini Reasoning open source?
Nemotron 3 Nano Omni is listed under Open Source. 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 multimodal input, Nemotron 3 Nano Omni or Phi-4 Mini Reasoning?
Nemotron 3 Nano Omni 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, Nemotron 3 Nano Omni or Phi-4 Mini Reasoning?
Phi-4 Mini Reasoning has the clearer documented reasoning mode signal in this comparison. If reasoning mode is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run Nemotron 3 Nano Omni and Phi-4 Mini Reasoning?
Nemotron 3 Nano Omni is available on OpenRouter. 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.
When should I pick Nemotron 3 Nano Omni over Phi-4 Mini Reasoning?
Phi-4 Mini Reasoning is safer overall; choose Nemotron 3 Nano Omni when long-context analysis matters. If your workload also depends on long-context analysis, start with Nemotron 3 Nano Omni; if it depends on reasoning depth, run the same evaluation with Phi-4 Mini Reasoning.
Continue comparing
Last reviewed: 2026-05-22. Data sourced from public model cards and provider documentation.