Granite Guardian 3.0 8B vs Phi-4 Mini Flash Reasoning
Granite Guardian 3.0 8B (2025) and Phi-4 Mini Flash Reasoning (2025) are frontier reasoning models from IBM Research and Microsoft Research. Granite Guardian 3.0 8B ships a 8k-token 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.
Phi-4 Mini Flash Reasoning fits 16x more tokens; pick it for long-context work and Granite Guardian 3.0 8B for tighter calls.
Decision scorecard
Local evidence first| Signal | Granite Guardian 3.0 8B | Phi-4 Mini Flash Reasoning |
|---|---|---|
| Best for | general production evaluation | reasoning-heavy apps |
| Decision fit | Classification | Long context |
| Context window | 8k | 128k |
| Cheapest output | - | - |
| Provider routes | 1 tracked | 1 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- Local decision data tags Granite Guardian 3.0 8B for Classification.
- Phi-4 Mini Flash Reasoning has the larger context window for long prompts, retrieval packs, or transcript analysis.
- 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 Guardian 3.0 8B
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
- Provider overlap exists on NVIDIA NIM; start route-level A/B tests there.
- Phi-4 Mini Flash Reasoning adds Reasoning in local capability data.
- Provider overlap exists on NVIDIA NIM; start route-level A/B tests there.
- Check replacement coverage for Reasoning before moving production traffic.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-03-01 | 2025-12-01 |
| Context window | 8k | 128k |
| Parameters | 8B | 3.8B |
| Architecture | Decoder Only | Decoder Only |
| License | Apache 2.0OSI-approved | MITOSI-approved |
| Openness | Open source | Open source |
| Weights | Unknown | Unknown |
| Code | Unknown | Unknown |
| Commercial use | Commercial use: permitted | Commercial use: permitted |
| Knowledge cutoff | 2024-04 | 2025-02 |
Pricing and availability
| Pricing attribute | Granite Guardian 3.0 8B | Phi-4 Mini Flash Reasoning |
|---|---|---|
| Input price | - | - |
| Output price | - | - |
| Providers |
Pricing not yet sourced for either model.
Capabilities
| Capability | Granite Guardian 3.0 8B | Phi-4 Mini Flash Reasoning |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| Reasoning | No | Yes |
| JSON / 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.
Continue comparing
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Popular comparisons for Granite Guardian 3.0 8B
Popular comparisons for Phi-4 Mini Flash Reasoning
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Last reviewed: 2026-05-22. Data sourced from public model cards and provider documentation.