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GPT-4o vs DeepSeek V3.1

Detailed technical comparison between GPT-4o (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: 6 WinsvsDeepSeek V3.1: 0 Wins
Context Leader

DeepSeek V3.1

163,840 tokens
Agentic Tool-Calling

Tie

Equal Capability
Lowest Latency (TTFT)

Tie

Equal Speed
Input Price Leader

DeepSeek V3.1

$0.25 / MTok
OpenAIactive

GPT-4o

GPT-4o ("o" for "omni") is OpenAI's latest AI model, supporting both text and image inputs with text outputs. It maintains the intelligence level of [GPT-4 Turbo](/models/openai/gpt-4-turbo) while being twice as...

View GPT-4o 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-4oDeepSeek V3.1
ProviderOpenAIDeepSeek
Context Window128,000 tokens163,840 tokens🏆
Agent Suitability90/100 (est.)Not yet benchmarked
Time to First Token (TTFT)280 ms (est.)No public TTFT data
Deployment Modelmanaged apiself hostable
Production StabilityStable GA (est.)Stable GA (est.)
API AvailableYesYes
Released Date2024-05-132025-08-21

API Pricing Comparison

Input Price per Million Tokens

GPT-4o

$2.50

DeepSeek V3.1

$0.25

Output Price per Million Tokens

GPT-4o

$10.00

DeepSeek V3.1

$0.95

💡 Cost Ratio: DeepSeek V3.1 is 10.0x cheaper per input token than GPT-4o.

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
88.7%vs80.0%+8.7% GPT-4o
GPT-4o 🏆
DeepSeek V3.1
HumanEvalPython coding & logic synthesis
90.2%vs78.2%+12.0% GPT-4o
GPT-4o 🏆
DeepSeek V3.1
MATHComplex mathematical problem solving
76.6%vs55.4%+21.2% GPT-4o
GPT-4o 🏆
DeepSeek V3.1
GPQAGraduate-level expert reasoning
53.6%vs40.8%+12.8% GPT-4o
GPT-4o 🏆
DeepSeek V3.1
HellaSwagCommonsense reasoning and inference
88.7%vs83.0%+5.7% GPT-4o
GPT-4o 🏆
DeepSeek V3.1
MT-BenchMulti-turn conversation flow quality
9.3%vs8.6%+0.7% GPT-4o
GPT-4o 🏆
DeepSeek V3.1

GPT-4o Quirks & Gotchas

  • ▸Strong multimodal performance — best vision+tool calling combo
  • ▸Legacy model — migrate to GPT-5 for latest improvements

DeepSeek V3.1 Quirks & Gotchas

No developer gotchas reported.

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