DeepSeek V3 vs Phi-3 Mini 4k
DeepSeek V3 (2024) and Phi-3 Mini 4k (2024) are compact production models from DeepSeek and Microsoft Research. DeepSeek V3 ships a 64k-token context window, while Phi-3 Mini 4k ships a 4K-token context window. On MMLU PRO, DeepSeek V3 leads by 30.2 pts. On pricing, Phi-3 Mini 4k costs $0.05/1M input tokens versus $0.1/1M for the alternative. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit.
Phi-3 Mini 4k is ~100% cheaper at $0.05/1M; pay for DeepSeek V3 only for long-context analysis.
Specs
| Released | 2024-12-26 | 2024-04-23 |
| Context window | 64k | 4K |
| Parameters | 671B | 3.8B |
| Architecture | mixture of experts | decoder only |
| License | Open Source | Open Source |
| Knowledge cutoff | 2024-04 | - |
Pricing and availability
| DeepSeek V3 | Phi-3 Mini 4k | |
|---|---|---|
| Input price | $0.1/1M tokens | $0.05/1M tokens |
| Output price | $0.3/1M tokens | $0.25/1M tokens |
| Providers |
Capabilities
| DeepSeek V3 | Phi-3 Mini 4k | |
|---|---|---|
| Vision | ||
| Multimodal | ||
| Reasoning | ||
| Function calling | ||
| Tool use | ||
| Structured outputs | ||
| Code execution |
Benchmarks
| Benchmark | DeepSeek V3 | Phi-3 Mini 4k |
|---|---|---|
| MMLU PRO | 75.9 | 45.7 |
| HumanEval | 85.5 | 59.8 |
| Massive Multitask Language Understanding | 88.5 | 68.2 |
| HellaSwag | 95.7 | 87.1 |
Deep dive
On shared benchmark coverage, MMLU PRO has DeepSeek V3 at 75.9 and Phi-3 Mini 4k at 45.7, with DeepSeek V3 ahead by 30.2 points; HumanEval has DeepSeek V3 at 85.5 and Phi-3 Mini 4k at 59.8, with DeepSeek V3 ahead by 25.7 points; Massive Multitask Language Understanding has DeepSeek V3 at 88.5 and Phi-3 Mini 4k at 68.2, with DeepSeek V3 ahead by 20.3 points. The largest visible gap is 30.2 points on MMLU PRO, which matters most when that benchmark mirrors your workload. Treat isolated benchmark wins as directional, because provider routing, prompt style, and tool access can move real application results.
The capability footprint differs most on function calling: DeepSeek V3, tool use: DeepSeek V3, and structured outputs: DeepSeek V3. 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.
For cost, DeepSeek V3 lists $0.1/1M input and $0.3/1M output tokens, while Phi-3 Mini 4k lists $0.05/1M input and $0.25/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Phi-3 Mini 4k lower by about $0.05 per million blended tokens. Availability is 12 providers versus 4, so concentration risk also matters.
Choose DeepSeek V3 when long-context analysis, larger context windows, and broader provider choice are central to the workload. Choose Phi-3 Mini 4k when provider fit and lower input-token cost are more important. For production, rerun your own prompts through the exact provider, region, and tool stack you plan to ship.
FAQ
Which has a larger context window, DeepSeek V3 or Phi-3 Mini 4k?
DeepSeek V3 supports 64k tokens, while Phi-3 Mini 4k supports 4K tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Which is cheaper, DeepSeek V3 or Phi-3 Mini 4k?
Phi-3 Mini 4k is cheaper on tracked token pricing. DeepSeek V3 costs $0.1/1M input and $0.3/1M output tokens. Phi-3 Mini 4k costs $0.05/1M input and $0.25/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is DeepSeek V3 or Phi-3 Mini 4k open source?
DeepSeek V3 is listed under Open Source. Phi-3 Mini 4k is listed under Open Source. 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 function calling, DeepSeek V3 or Phi-3 Mini 4k?
DeepSeek V3 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.
Which is better for tool use, DeepSeek V3 or Phi-3 Mini 4k?
DeepSeek V3 has the clearer documented tool use signal in this comparison. If tool use is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run DeepSeek V3 and Phi-3 Mini 4k?
DeepSeek V3 is available on DeepInfra, Fireworks AI, DeepSeek Platform, Microsoft Foundry, and OpenRouter. Phi-3 Mini 4k is available on Microsoft Foundry, NVIDIA NIM, Baseten API, and Replicate API. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
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Last reviewed: 2026-04-24. Data sourced from public model cards and provider documentation.