Granite Vision 4.1 4B vs Phi-4 Mini Flash Reasoning
Granite Vision 4.1 4B (2026) and Phi-4 Mini Flash Reasoning (2025) are frontier reasoning models from IBM Research and Microsoft Research. Granite Vision 4.1 4B ships a not-yet-sourced context window, while Phi-4 Mini Flash 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.
Granite Vision 4.1 4B is safer overall; choose Phi-4 Mini Flash Reasoning when reasoning depth matters.
Decision scorecard
Local evidence first| Signal | Granite Vision 4.1 4B | Phi-4 Mini Flash Reasoning |
|---|---|---|
| Best for | multimodal apps | reasoning-heavy apps |
| Decision fit | Vision | Long context |
| Context window | — | 128k |
| Cheapest output | - | - |
| Provider routes | 0 tracked | 1 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- Granite Vision 4.1 4B uniquely exposes Vision and Multimodal in local model data.
- Local decision data tags Granite Vision 4.1 4B for Vision.
- Phi-4 Mini Flash Reasoning has the larger context window for long prompts, retrieval packs, or transcript analysis.
- 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.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Granite Vision 4.1 4B
Unavailable
No complete token price in local provider data
Phi-4 Mini Flash 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 Granite Vision 4.1 4B and Phi-4 Mini Flash Reasoning; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Vision and Multimodal before moving production traffic.
- Phi-4 Mini Flash Reasoning adds Reasoning in local capability data.
- No overlapping tracked provider route is sourced for Phi-4 Mini Flash Reasoning and Granite Vision 4.1 4B; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Reasoning before moving production traffic.
- Granite Vision 4.1 4B adds Vision and Multimodal in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2026-04-29 | 2025-12-01 |
| Context window | — | 128k |
| Parameters | 4B | 3.8B |
| Architecture | Decoder Only | Decoder Only |
| License | Open Weights | MITOSI-approved |
| Openness | Open weights | Open source |
| Commercial use | - | Commercial use: permitted |
| Knowledge cutoff | - | 2025-02 |
Pricing and availability
| Pricing attribute | Granite Vision 4.1 4B | Phi-4 Mini Flash Reasoning |
|---|---|---|
| Input price | - | - |
| Output price | - | - |
| Providers | - |
Pricing not yet sourced for either model.
Capabilities
| Capability | Granite Vision 4.1 4B | Phi-4 Mini Flash Reasoning |
|---|---|---|
| Vision | Yes | 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 scores are currently available for this pair.
Deep dive
The capability footprint differs most on vision: Granite Vision 4.1 4B, multimodal input: Granite Vision 4.1 4B, and reasoning mode: Phi-4 Mini Flash 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: Granite Vision 4.1 4B has no token price sourced yet and Phi-4 Mini Flash Reasoning has no token price sourced yet. Provider availability is 0 tracked routes versus 1. Treat unknown pricing as an integration gap, then verify the route you will actually call before estimating production spend.
Choose Granite Vision 4.1 4B when vision-heavy evaluation are central to the workload. Choose Phi-4 Mini Flash Reasoning when reasoning depth and broader provider choice 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 Granite Vision 4.1 4B or Phi-4 Mini Flash Reasoning open source?
Granite Vision 4.1 4B is listed under Open Weights. Phi-4 Mini Flash Reasoning is listed under MIT. 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, Granite Vision 4.1 4B or Phi-4 Mini Flash Reasoning?
Granite Vision 4.1 4B 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, Granite Vision 4.1 4B or Phi-4 Mini Flash Reasoning?
Granite Vision 4.1 4B 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, Granite Vision 4.1 4B or Phi-4 Mini Flash Reasoning?
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.
Where can I run Granite Vision 4.1 4B and Phi-4 Mini Flash Reasoning?
Granite Vision 4.1 4B is available on the tracked providers still being sourced. Phi-4 Mini Flash Reasoning is available on NVIDIA NIM. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
When should I pick Granite Vision 4.1 4B over Phi-4 Mini Flash Reasoning?
Granite Vision 4.1 4B is safer overall; choose Phi-4 Mini Flash Reasoning when reasoning depth matters. If your workload also depends on vision-heavy evaluation, start with Granite Vision 4.1 4B; if it depends on reasoning depth, run the same evaluation with Phi-4 Mini Flash Reasoning.
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Last reviewed: 2026-06-04. Data sourced from public model cards and provider documentation.