Doubao Pro 256K vs Phi-4 Mini Reasoning
Doubao Pro 256K (2024) and Phi-4 Mini Reasoning (2026) are frontier reasoning models from ByteDance and Microsoft Research. Doubao Pro 256K ships a 256k-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. It focuses on practical selection signals rather than broad model-family marketing.
Phi-4 Mini Reasoning is safer overall; choose Doubao Pro 256K when long-context analysis matters.
Decision scorecard
Local evidence first| Signal | Doubao Pro 256K | Phi-4 Mini Reasoning |
|---|---|---|
| Best for | general production evaluation | reasoning-heavy apps |
| Decision fit | Long context | Long context |
| Context window | 256k | 128k |
| Cheapest output | $1.32/1M tokens | - |
| Provider routes | 1 tracked | 0 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- Doubao Pro 256K has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Doubao Pro 256K has broader tracked provider coverage for fallback and route flexibility.
- Local decision data tags Doubao Pro 256K for Long context.
- 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.
Doubao Pro 256K
$919
Cheapest tracked route/tier: Volcengine
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 Doubao Pro 256K and Phi-4 Mini Reasoning; plan for SDK, billing, or endpoint changes.
- Phi-4 Mini Reasoning adds Reasoning in local capability data.
- No overlapping tracked provider route is sourced for Phi-4 Mini Reasoning and Doubao Pro 256K; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Reasoning before moving production traffic.
Specs
| Specification | ||
|---|---|---|
| Released | 2024-05-15 | 2026-05-16 |
| Context window | 256k | 128k |
| Parameters | — | 3.8B |
| Architecture | Decoder Only | - |
| License | Proprietary | MITOSI-approved |
| Openness | Proprietary | Open source |
| Weights | Not released | Unknown |
| Code | Unknown | Unknown |
| Commercial use | Commercial use: conditional | Commercial use: permitted |
| Knowledge cutoff | - | 2025-02 |
Pricing and availability
| Pricing attribute | Doubao Pro 256K | Phi-4 Mini Reasoning |
|---|---|---|
| Input price | $0.73/1M tokens | - |
| Output price | $1.32/1M tokens | - |
| Providers | - |
Capabilities
| Capability | Doubao Pro 256K | Phi-4 Mini 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
Popular comparisons for Doubao Pro 256K
Popular comparisons for Phi-4 Mini Reasoning
Last reviewed: 2026-07-10. Data sourced from public model cards and provider documentation.