Model Comparison

GPT-4o vs DeepSeek-V3.1

DeepSeek-V3.1 significantly outperforms across most benchmarks. DeepSeek-V3.1 is 9.7x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

7 benchmarks

GPT-4o outperforms in 0 benchmarks, while DeepSeek-V3.1 is better at 7 benchmarks (Aider-Polyglot, AIME 2024, GPQA, Humanity's Last Exam, MMLU-Pro, SimpleQA, SWE-Bench Verified).

DeepSeek-V3.1 significantly outperforms across most benchmarks.

Fri May 15 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

DeepSeek-V3.1 costs less

For input processing, GPT-4o ($2.50/1M tokens) is 9.3x more expensive than DeepSeek-V3.1 ($0.27/1M tokens).

For output processing, GPT-4o ($10.00/1M tokens) is 10.0x more expensive than DeepSeek-V3.1 ($1.00/1M tokens).

In conclusion, GPT-4o is more expensive than DeepSeek-V3.1.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Fri May 15 2026 • llm-stats.com
OpenAI
GPT-4o
Input tokens$2.50
Output tokens$10.00
Best providerAzure
DeepSeek
DeepSeek-V3.1
Input tokens$0.27
Output tokens$1.00
Best providerDeepinfra
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

DeepSeek-V3.1 accepts 163,840 input tokens compared to GPT-4o's 128,000 tokens. DeepSeek-V3.1 can generate longer responses up to 163,840 tokens, while GPT-4o is limited to 16,384 tokens.

OpenAI
GPT-4o
Input128,000 tokens
Output16,384 tokens
DeepSeek
DeepSeek-V3.1
Input163,840 tokens
Output163,840 tokens
Fri May 15 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

GPT-4o supports multimodal inputs, whereas DeepSeek-V3.1 does not.

GPT-4o can handle both text and other forms of data like images, making it suitable for multimodal applications.

GPT-4o

Text
Images
Audio
Video

DeepSeek-V3.1

Text
Images
Audio
Video

License

Usage and distribution terms

GPT-4o is licensed under a proprietary license, while DeepSeek-V3.1 uses MIT.

License differences may affect how you can use these models in commercial or open-source projects.

GPT-4o

Proprietary

Closed source

DeepSeek-V3.1

MIT

Open weights

Release Timeline

When each model was launched

GPT-4o was released on 2024-08-06, while DeepSeek-V3.1 was released on 2025-01-10.

DeepSeek-V3.1 is 5 months newer than GPT-4o.

GPT-4o

Aug 6, 2024

1.8 years ago

DeepSeek-V3.1

Jan 10, 2025

1.3 years ago

5mo newer

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

GPT-4o is available from Azure, OpenAI. DeepSeek-V3.1 is available from DeepInfra, Novita.

GPT-4o

azure logo
Azure
Input Price:Input: $2.50/1MOutput Price:Output: $10.00/1M
openai logo
OpenAI
Input Price:Input: $2.50/1MOutput Price:Output: $10.00/1M

DeepSeek-V3.1

deepinfra logo
Deepinfra
Input Price:Input: $0.27/1MOutput Price:Output: $1.00/1M
novita logo
Novita
Input Price:Input: $0.27/1MOutput Price:Output: $1.00/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

OpenAI
Supports multimodal inputs
DeepSeek
Larger context window (163,840 tokens)
Less expensive input tokens
Less expensive output tokens
Has open weights
Higher Aider-Polyglot score (68.4% vs 30.7%)
Higher AIME 2024 score (66.3% vs 13.1%)
Higher GPQA score (74.9% vs 70.1%)
Higher Humanity's Last Exam score (15.9% vs 5.3%)
Higher MMLU-Pro score (83.7% vs 74.7%)
Higher SimpleQA score (93.4% vs 38.2%)
Higher SWE-Bench Verified score (66.0% vs 33.2%)

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-4o
DeepSeek
DeepSeek-V3.1

FAQ

Common questions about GPT-4o vs DeepSeek-V3.1.

Which is better, GPT-4o or DeepSeek-V3.1?

DeepSeek-V3.1 significantly outperforms across most benchmarks. GPT-4o is made by OpenAI and DeepSeek-V3.1 is made by DeepSeek. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does GPT-4o compare to DeepSeek-V3.1 in benchmarks?

GPT-4o scores AI2D: 94.2%, DocVQA: 92.8%, ChartQA: 85.7%, MMLU: 85.7%, CharXiv-D: 85.3%. DeepSeek-V3.1 scores SimpleQA: 93.4%, MMLU-Redux: 91.8%, MMLU-Pro: 83.7%, GPQA: 74.9%, CodeForces: 69.7%.

Is GPT-4o cheaper than DeepSeek-V3.1?

DeepSeek-V3.1 is 9.3x cheaper for input tokens. GPT-4o costs $2.50/M input and $10.00/M output via azure. DeepSeek-V3.1 costs $0.27/M input and $1.00/M output via deepinfra.

What are the context window sizes for GPT-4o and DeepSeek-V3.1?

GPT-4o supports 128K tokens and DeepSeek-V3.1 supports 164K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GPT-4o and DeepSeek-V3.1?

Key differences include context window (128K vs 164K), input pricing ($2.50 vs $0.27/M), multimodal support (yes vs no), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-4o and DeepSeek-V3.1?

GPT-4o is developed by OpenAI and DeepSeek-V3.1 is developed by DeepSeek.