Phi-4 14B vs Seed-OSS 36B Instruct
Phi-4 14B (2024) and Seed-OSS 36B Instruct (2025) are compact production models from Microsoft Research and ByteDance. Phi-4 14B ships a 16k-token context window, while Seed-OSS 36B Instruct ships a 4k-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 14B fits 4x more tokens; pick it for long-context work and Seed-OSS 36B Instruct for tighter calls.
Decision scorecard
Local evidence first| Signal | Phi-4 14B | Seed-OSS 36B Instruct |
|---|---|---|
| Best for | provider-routed production | general production evaluation |
| Decision fit | Classification and JSON / Tool use | General |
| Context window | 16k | 4k |
| Cheapest output | $0.14/1M tokens | - |
| Provider routes | 3 tracked | 1 tracked |
| Shared benchmarks | 0 rows | 0 rows |
Decision tradeoffs
- Phi-4 14B has the larger context window for long prompts, retrieval packs, or transcript analysis.
- Phi-4 14B has broader tracked provider coverage for fallback and procurement flexibility.
- Phi-4 14B uniquely exposes Structured outputs in local model data.
- Local decision data tags Phi-4 14B for Classification and JSON / Tool use.
- Use Seed-OSS 36B Instruct when your own prompt tests beat the comparison signals; the local data does not show a decisive standalone advantage yet.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Phi-4 14B
$87.00
Cheapest tracked route/tier: OpenRouter
Seed-OSS 36B Instruct
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 14B and Seed-OSS 36B Instruct; plan for SDK, billing, or endpoint changes.
- Check replacement coverage for Structured outputs before moving production traffic.
- No overlapping tracked provider route is sourced for Seed-OSS 36B Instruct and Phi-4 14B; plan for SDK, billing, or endpoint changes.
- Phi-4 14B adds Structured outputs in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2024-12-13 | 2025-06-01 |
| Context window | 16k | 4k |
| Parameters | 14B | 36B |
| Architecture | decoder only | decoder only |
| License | MIT(OSI) | Proprietary |
| Openness | Open source | Proprietary |
| Commercial use | Commercial use allowed | Commercial use with conditions |
| Knowledge cutoff | 2024-06 | 2024-10 |
Pricing and availability
| Pricing attribute | Phi-4 14B | Seed-OSS 36B Instruct |
|---|---|---|
| Input price | $0.07/1M tokens | - |
| Output price | $0.14/1M tokens | - |
| Providers |
Capabilities
| Capability | Phi-4 14B | Seed-OSS 36B Instruct |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| Reasoning | No | No |
| Function calling | No | No |
| Tool use | No | No |
| Structured outputs | Yes | 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 structured outputs: Phi-4 14B. 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 14B has $0.07/1M input tokens and Seed-OSS 36B Instruct has no token price sourced yet. Provider availability is 3 tracked routes versus 1. Treat unknown pricing as an integration gap, then verify the route you will actually call before estimating production spend.
Choose Phi-4 14B when long-context analysis, larger context windows, and broader provider choice are central to the workload. Choose Seed-OSS 36B Instruct when provider fit 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, Phi-4 14B or Seed-OSS 36B Instruct?
Phi-4 14B supports 16k tokens, while Seed-OSS 36B Instruct supports 4k tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Is Phi-4 14B or Seed-OSS 36B Instruct open source?
Phi-4 14B is listed under MIT. Seed-OSS 36B Instruct 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 structured outputs, Phi-4 14B or Seed-OSS 36B Instruct?
Phi-4 14B 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 Phi-4 14B and Seed-OSS 36B Instruct?
Phi-4 14B is available on OpenRouter, Fireworks AI, and Microsoft Foundry. Seed-OSS 36B Instruct is available on NVIDIA NIM. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
When should I pick Phi-4 14B over Seed-OSS 36B Instruct?
Phi-4 14B fits 4x more tokens; pick it for long-context work and Seed-OSS 36B Instruct for tighter calls. If your workload also depends on long-context analysis, start with Phi-4 14B; if it depends on provider fit, run the same evaluation with Seed-OSS 36B Instruct.
Continue comparing
Last reviewed: 2026-05-19. Data sourced from public model cards and provider documentation.