LLM Reference

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 $0.10/1M 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 V3 only for long-context analysis.

Decision scorecard

Local evidence first
SignalDeepSeek V3Phi-3 Mini 4k
Best fortool-calling agents and provider-routed productionprovider-routed production
Decision fitCoding, Agents, and ClassificationCoding and Classification
Context window64k4k
Cheapest output$0.30/1M tokens$0.25/1M tokens
Provider routes13 tracked4 tracked
Shared benchmarksMMLU PRO leader4 shared

Decision tradeoffs

Choose DeepSeek V3 when...
  • DeepSeek V3 holds a shared-benchmark lead on MMLU PRO, ahead by 30.2 points.
  • DeepSeek V3 has the larger context window for long prompts, retrieval packs, or transcript analysis.
  • DeepSeek V3 has broader tracked provider coverage for fallback and route flexibility.
  • DeepSeek V3 uniquely exposes JSON / Tool use and Structured outputs in local model data.
  • Local decision data tags DeepSeek V3 for Coding, Agents, and Classification.
Choose Phi-3 Mini 4k when...
  • 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.

Lower estimate Phi-3 Mini 4k

DeepSeek V3

$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

DeepSeek V3 -> Phi-3 Mini 4k
  • 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 JSON / Tool use and Structured outputs before moving production traffic.
Phi-3 Mini 4k -> DeepSeek V3
  • Provider overlap exists on Microsoft Foundry, NVIDIA NIM, and Replicate API; start route-level A/B tests there.
  • DeepSeek V3 is $0.05/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
  • DeepSeek V3 adds JSON / Tool use and Structured outputs in local capability data.

Specs

Specification
Released2024-12-262024-04-23
Context window64k4k
Parameters671B3.8B
ArchitectureMixture of ExpertsDecoder Only
LicenseMITOSI-approvedMITOSI-approved
OpennessOpen sourceOpen source
WeightsAvailableUnknown
CodeUnknownUnknown
Commercial useCommercial use: permittedCommercial use: permitted
Knowledge cutoff2024-042023-10

Pricing and availability

Pricing attributeDeepSeek V3Phi-3 Mini 4k
Input price$0.10/1M tokens$0.05/1M tokens
Output price$0.30/1M tokens$0.25/1M tokens
Providers
DeepInfraFireworks AIDeepSeek PlatformMicrosoft FoundryOpenRouterNVIDIA NIM
Microsoft FoundryNVIDIA NIMBaseten APIReplicate API

Capabilities

CapabilityDeepSeek V3Phi-3 Mini 4k
VisionNoNo
MultimodalNoNo
ReasoningNoNo
JSON / Tool useYesNo
Structured outputsYesNo
Code executionNoNo
IDE integrationNoNo
Computer useNoNo
Parallel agentsNoNo

Benchmarks

BenchmarkDeepSeek V3Phi-3 Mini 4k
MMLU PRO75.945.7
HumanEval85.559.8
Massive Multitask Language Understanding88.568.2
HellaSwag95.787.1

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Last reviewed: 2026-06-29. Data sourced from public model cards and provider documentation.