DeepSeek R1 vs Phi-3 Mini 4k
DeepSeek R1 (2025) and Phi-3 Mini 4k (2024) are frontier reasoning models from DeepSeek and Microsoft Research. DeepSeek R1 ships a 128k-token context window, while Phi-3 Mini 4k ships a 4k-token context window. On Google-Proof Q&A, DeepSeek R1 leads by 30.6 pts. On pricing, Phi-3 Mini 4k costs $0.05/1M input tokens versus $0.10/1M for the alternative. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.
Phi-3 Mini 4k is ~100% cheaper at $0.05/1M; pay for DeepSeek R1 only for coding workflow support.
Decision scorecard
Local evidence first| Signal | DeepSeek R1 | Phi-3 Mini 4k |
|---|---|---|
| Best for | reasoning-heavy apps and provider-routed production | provider-routed production |
| Decision fit | Coding, RAG, and Agents | Coding and Classification |
| Context window | 128k | 4k |
| Cheapest output | $0.30/1M tokens | $0.25/1M tokens |
| Provider routes | 14 tracked | 4 tracked |
| Shared benchmarks | Google-Proof Q&A leader | 2 shared |
Decision tradeoffs
- DeepSeek R1 holds a shared-benchmark lead on Google-Proof Q&A, ahead by 30.6 points.
- DeepSeek R1 has the larger context window for long prompts, retrieval packs, or transcript analysis.
- DeepSeek R1 has broader tracked provider coverage for fallback and route flexibility.
- DeepSeek R1 uniquely exposes Reasoning, Structured outputs, and Code execution in local model data.
- Local decision data tags DeepSeek R1 for Coding, RAG, and Agents.
- Phi-3 Mini 4k has the lower cheapest tracked output price at $0.25/1M tokens.
- Local decision data tags Phi-3 Mini 4k for Coding and Classification.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
DeepSeek R1
$155
Cheapest tracked route/tier: Bitdeer AI
Phi-3 Mini 4k
$103
Cheapest tracked route/tier: Replicate API
Estimated monthly gap: $52.50. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- Provider overlap exists on Microsoft Foundry, NVIDIA NIM, and Replicate API; start route-level A/B tests there.
- Phi-3 Mini 4k is $0.05/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Reasoning, Structured outputs, and Code execution before moving production traffic.
- Provider overlap exists on NVIDIA NIM, Microsoft Foundry, and Replicate API; start route-level A/B tests there.
- DeepSeek R1 is $0.05/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- DeepSeek R1 adds Reasoning, Structured outputs, and Code execution in local capability data.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-01-20 | 2024-04-23 |
| Context window | 128k | 4k |
| Parameters | 671B, 37B Active | 3.8B |
| Architecture | Decoder Only | Decoder Only |
| License | MITOSI-approved | MITOSI-approved |
| Openness | Open source | Open source |
| Weights | Available | Unknown |
| Code | Unknown | Unknown |
| Commercial use | Commercial use: permitted | Commercial use: permitted |
| Knowledge cutoff | 2023-12 | 2023-10 |
Pricing and availability
| Pricing attribute | DeepSeek R1 | Phi-3 Mini 4k |
|---|---|---|
| Input price | $0.10/1M tokens | $0.05/1M tokens |
| Output price | $0.30/1M tokens | $0.25/1M tokens |
| Providers |
Capabilities
| Capability | DeepSeek R1 | Phi-3 Mini 4k |
|---|---|---|
| Vision | No | No |
| Multimodal | No | No |
| Reasoning | Yes | No |
| JSON / Tool use | No | No |
| Structured outputs | Yes | No |
| Code execution | Yes | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
| Benchmark | DeepSeek R1 | Phi-3 Mini 4k |
|---|---|---|
| Google-Proof Q&A | 71.5 | 40.9 |
| HumanEval | 89.9 | 59.8 |
Continue comparing
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Last reviewed: 2026-06-29. Data sourced from public model cards and provider documentation.