Nemotron 4 340B vs Phi-4 Mini Reasoning
Nemotron 4 340B (2025) and Phi-4 Mini Reasoning (2026) are frontier reasoning models from NVIDIA AI and Microsoft Research. Nemotron 4 340B ships a 4K-token context window, while Phi-4 Mini Reasoning ships a 128K-token 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. The goal is to make the tradeoff clear before deeper testing.
Phi-4 Mini Reasoning fits 32x more tokens; pick it for long-context work and Nemotron 4 340B for tighter calls.
Decision scorecard
Local evidence first| Signal | Nemotron 4 340B | Phi-4 Mini Reasoning |
|---|---|---|
| Decision fit | Classification and JSON / Tool use | Long context |
| Context window | 4K | 128K |
| Cheapest output | $4.2/1M tokens | - |
| Provider routes | 2 tracked | 0 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Nemotron 4 340B has broader tracked provider coverage for fallback and procurement flexibility.
- Nemotron 4 340B uniquely exposes Structured outputs in local model data.
- Local decision data tags Nemotron 4 340B for Classification and JSON / Tool use.
- Phi-4 Mini Reasoning has the larger context window for long prompts, retrieval packs, or transcript analysis.
- 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 prices on this page.
Nemotron 4 340B
$4,410
Cheapest tracked route: DeepInfra
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 4 340B and Phi-4 Mini Reasoning; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Structured outputs 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 4 340B; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Reasoning before moving production traffic.
- Nemotron 4 340B adds Structured outputs in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-02-27 | 2026-05-16 |
| Context window | 4K | 128K |
| Parameters | 340B | — |
| Architecture | decoder only | - |
| License | Unknown | Proprietary |
| Knowledge cutoff | - | 2025-02 |
Pricing and availability
| Pricing attribute | Nemotron 4 340B | Phi-4 Mini Reasoning |
|---|---|---|
| Input price | $4.2/1M tokens | - |
| Output price | $4.2/1M tokens | - |
| Providers | - |
Capabilities
| Capability | Nemotron 4 340B | Phi-4 Mini Reasoning |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| Reasoning | No | Yes |
| Function calling | No | No |
| Tool use | No | No |
| Structured outputs | Yes | No |
| Code execution | No | No |
Benchmarks
No shared benchmark rows are currently sourced for this pair.
Deep dive
The capability footprint differs most on reasoning mode: Phi-4 Mini Reasoning and structured outputs: Nemotron 4 340B. 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 4 340B has $4.2/1M input tokens and Phi-4 Mini Reasoning has no token price sourced yet. Provider availability is 2 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 4 340B when provider fit and broader provider choice are central to the workload. Choose Phi-4 Mini Reasoning when reasoning depth and larger context windows 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. For teams standardizing a stack, that distinction is often the difference between a benchmark win and a reliable deployment.
FAQ
Which has a larger context window, Nemotron 4 340B or Phi-4 Mini Reasoning?
Phi-4 Mini Reasoning supports 128K tokens, while Nemotron 4 340B supports 4K tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Is Nemotron 4 340B or Phi-4 Mini Reasoning open source?
Nemotron 4 340B is listed under Unknown. 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 reasoning mode, Nemotron 4 340B 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.
Which is better for structured outputs, Nemotron 4 340B or Phi-4 Mini Reasoning?
Nemotron 4 340B has the clearer documented structured outputs signal in this comparison. If structured outputs is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run Nemotron 4 340B and Phi-4 Mini Reasoning?
Nemotron 4 340B is available on NVIDIA NIM and DeepInfra. 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 4 340B over Phi-4 Mini Reasoning?
Phi-4 Mini Reasoning fits 32x more tokens; pick it for long-context work and Nemotron 4 340B for tighter calls. If your workload also depends on provider fit, start with Nemotron 4 340B; if it depends on reasoning depth, run the same evaluation with Phi-4 Mini Reasoning.
Continue comparing
Last reviewed: 2026-05-19. Data sourced from public model cards and provider documentation.