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GPT-4o-mini Search Preview vs DeepSeek V3.1

Detailed technical comparison between GPT-4o-mini Search Preview (OpenAI) and DeepSeek V3.1 (DeepSeek). Review live API token pricing, context window capabilities, time-to-first-token latency, and verified benchmark scores side-by-side.

⚡ Executive Summary & Verdict

Comparison Snapshot

GPT-4o-mini Search Preview: 0 WinsvsDeepSeek V3.1: 6 Wins
Context Leader

DeepSeek V3.1

163,840 tokens
Agentic Tool-Calling

Tie

Equal Capability
Lowest Latency (TTFT)

Tie

Equal Speed
Input Price Leader

GPT-4o-mini Search Preview

$0.15 / MTok
OpenAIactive

GPT-4o-mini Search Preview

GPT-4o mini Search Preview is a specialized model for web search in Chat Completions. It is trained to understand and execute web search queries.

View GPT-4o-mini Search Preview Full Specs →
DeepSeekactive

DeepSeek V3.1

DeepSeek-V3.1 is a large hybrid reasoning model (671B parameters, 37B active) that supports both thinking and non-thinking modes via prompt templates. It extends the DeepSeek-V3 base with a two-phase long-context...

View DeepSeek V3.1 Full Specs →

Technical Specifications

🏆 = Superior Spec
SpecificationGPT-4o-mini Search PreviewDeepSeek V3.1
ProviderOpenAIDeepSeek
Context Window128,000 tokens163,840 tokens🏆
Agent SuitabilityN/AN/A
Time to First Token (TTFT)N/AN/A
Deployment Modelmanaged apiself hostable
Production Stabilitystablestable
API AvailableYesYes
Released Date2025-03-122025-08-21

API Pricing Comparison

Input Price per Million Tokens

GPT-4o-mini Search Preview

$0.15

DeepSeek V3.1

$0.25

Output Price per Million Tokens

GPT-4o-mini Search Preview

$0.60

DeepSeek V3.1

$0.95

💡 Cost Ratio: GPT-4o-mini Search Preview is 1.7x cheaper per input token than DeepSeek V3.1.

Want to test both models live?

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Benchmark Performance Metrics

Standardized Scores (0–100%)

Scores show verified raw accuracy percentages across standardized AI evaluation suites. Higher bars indicate superior performance in that domain.

MMLUGeneral knowledge & multi-task understanding
73.4%vs80.0%+6.6% DeepSeek V3.1
GPT-4o-mini Search Preview
DeepSeek V3.1 🏆
HumanEvalPython coding & logic synthesis
69.6%vs78.2%+8.6% DeepSeek V3.1
GPT-4o-mini Search Preview
DeepSeek V3.1 🏆
MATHComplex mathematical problem solving
42.8%vs55.4%+12.6% DeepSeek V3.1
GPT-4o-mini Search Preview
DeepSeek V3.1 🏆
GPQAGraduate-level expert reasoning
30.2%vs40.8%+10.6% DeepSeek V3.1
GPT-4o-mini Search Preview
DeepSeek V3.1 🏆
HellaSwagCommonsense reasoning and inference
77.4%vs83.0%+5.6% DeepSeek V3.1
GPT-4o-mini Search Preview
DeepSeek V3.1 🏆
MT-BenchMulti-turn conversation flow quality
8.0%vs8.6%+0.6% DeepSeek V3.1
GPT-4o-mini Search Preview
DeepSeek V3.1 🏆

GPT-4o-mini Search Preview Quirks & Gotchas

No developer gotchas reported.

DeepSeek V3.1 Quirks & Gotchas

No developer gotchas reported.

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