Phi-4 Mini Flash Reasoning vs Xiaomi MiMo-V2-Pro
Phi-4 Mini Flash Reasoning (2025) and Xiaomi MiMo-V2-Pro (2026) are frontier reasoning models from Microsoft Research and Xiaomi. Phi-4 Mini Flash Reasoning ships a 128k-token context window, while Xiaomi MiMo-V2-Pro ships a 1m-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. It focuses on practical selection signals rather than broad model-family marketing.
Xiaomi MiMo-V2-Pro fits 8x more tokens; pick it for long-context work and Phi-4 Mini Flash Reasoning for tighter calls.
Decision scorecard
Local evidence first| Signal | Phi-4 Mini Flash Reasoning | Xiaomi MiMo-V2-Pro |
|---|---|---|
| Best for | reasoning-heavy apps | tool-calling agents and long-context analysis |
| Decision fit | Long context | RAG, Agents, and Long context |
| Context window | 128k | 1m |
| Cheapest output | - | - |
| Provider routes | 1 tracked | 0 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Phi-4 Mini Flash Reasoning has broader tracked provider coverage for fallback and procurement flexibility.
- Phi-4 Mini Flash Reasoning uniquely exposes Reasoning in local model data.
- Local decision data tags Phi-4 Mini Flash Reasoning for Long context.
- Xiaomi MiMo-V2-Pro has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Xiaomi MiMo-V2-Pro uniquely exposes Function calling in local model data.
- Local decision data tags Xiaomi MiMo-V2-Pro for RAG, Agents, and Long context.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Phi-4 Mini Flash Reasoning
Unavailable
No complete token price in local provider data
Xiaomi MiMo-V2-Pro
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 Phi-4 Mini Flash Reasoning and Xiaomi MiMo-V2-Pro; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Reasoning before moving production traffic.
- Xiaomi MiMo-V2-Pro adds Function calling in local capability data.
- No overlapping tracked provider route is sourced for Xiaomi MiMo-V2-Pro and Phi-4 Mini Flash Reasoning; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Function calling before moving production traffic.
- Phi-4 Mini Flash Reasoning adds Reasoning in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-12-01 | 2026-03-19 |
| Context window | 128k | 1m |
| Parameters | 3.8B | 1T |
| Architecture | decoder only | - |
| License | MIT(OSI) | Proprietary |
| Openness | Open source | Proprietary |
| Commercial use | Commercial use allowed | Commercial use with conditions |
| Knowledge cutoff | 2025-02 | 2024-12 |
Pricing and availability
| Pricing attribute | Phi-4 Mini Flash Reasoning | Xiaomi MiMo-V2-Pro |
|---|---|---|
| Input price | - | - |
| Output price | - | - |
| Providers | - |
Pricing not yet sourced for either model.
Capabilities
| Capability | Phi-4 Mini Flash Reasoning | Xiaomi MiMo-V2-Pro |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| Reasoning | Yes | No |
| Function calling | No | Yes |
| 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 reasoning mode: Phi-4 Mini Flash Reasoning and function calling: Xiaomi MiMo-V2-Pro. 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: Phi-4 Mini Flash Reasoning has no token price sourced yet and Xiaomi MiMo-V2-Pro 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 Phi-4 Mini Flash Reasoning when reasoning depth and broader provider choice are central to the workload. Choose Xiaomi MiMo-V2-Pro when long-context analysis 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.
FAQ
Which has a larger context window, Phi-4 Mini Flash Reasoning or Xiaomi MiMo-V2-Pro?
Xiaomi MiMo-V2-Pro supports 1m tokens, while Phi-4 Mini Flash 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 Phi-4 Mini Flash Reasoning or Xiaomi MiMo-V2-Pro open source?
Phi-4 Mini Flash Reasoning is listed under MIT. Xiaomi MiMo-V2-Pro 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, Phi-4 Mini Flash Reasoning or Xiaomi MiMo-V2-Pro?
Phi-4 Mini Flash 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 function calling, Phi-4 Mini Flash Reasoning or Xiaomi MiMo-V2-Pro?
Xiaomi MiMo-V2-Pro has the clearer documented function calling signal in this comparison. If function calling is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run Phi-4 Mini Flash Reasoning and Xiaomi MiMo-V2-Pro?
Phi-4 Mini Flash Reasoning is available on NVIDIA NIM. Xiaomi MiMo-V2-Pro 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 Phi-4 Mini Flash Reasoning over Xiaomi MiMo-V2-Pro?
Xiaomi MiMo-V2-Pro fits 8x more tokens; pick it for long-context work and Phi-4 Mini Flash Reasoning for tighter calls. If your workload also depends on reasoning depth, start with Phi-4 Mini Flash Reasoning; if it depends on long-context analysis, run the same evaluation with Xiaomi MiMo-V2-Pro.
Continue comparing
Last reviewed: 2026-05-22. Data sourced from public model cards and provider documentation.