Model Comparison

GPT-4o mini vs DeepSeek-V2.5

DeepSeek-V2.5 shows notably better performance in the majority of benchmarks. DeepSeek-V2.5 is 1.5x cheaper per token.

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Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

GPT-4o mini outperforms in 1 benchmarks (MMLU), while DeepSeek-V2.5 is better at 3 benchmarks (HumanEval, MATH, SWE-Bench Verified).

DeepSeek-V2.5 shows notably better performance in the majority of benchmarks.

Tue Apr 14 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

DeepSeek-V2.5 costs less

For input processing, GPT-4o mini ($0.15/1M tokens) is 1.1x more expensive than DeepSeek-V2.5 ($0.14/1M tokens).

For output processing, GPT-4o mini ($0.60/1M tokens) is 2.1x more expensive than DeepSeek-V2.5 ($0.28/1M tokens).

In conclusion, GPT-4o mini is more expensive than DeepSeek-V2.5.*

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

Lowest available price from all providers
Tue Apr 14 2026 • llm-stats.com
OpenAI
GPT-4o mini
Input tokens$0.15
Output tokens$0.60
Best providerAzure
DeepSeek
DeepSeek-V2.5
Input tokens$0.14
Output tokens$0.28
Best providerDeepSeek
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

GPT-4o mini accepts 128,000 input tokens compared to DeepSeek-V2.5's 8,192 tokens. GPT-4o mini can generate longer responses up to 16,384 tokens, while DeepSeek-V2.5 is limited to 8,192 tokens.

OpenAI
GPT-4o mini
Input128,000 tokens
Output16,384 tokens
DeepSeek
DeepSeek-V2.5
Input8,192 tokens
Output8,192 tokens
Tue Apr 14 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

GPT-4o mini supports multimodal inputs, whereas DeepSeek-V2.5 does not.

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

GPT-4o mini

Text
Images
Audio
Video

DeepSeek-V2.5

Text
Images
Audio
Video

License

Usage and distribution terms

GPT-4o mini is licensed under a proprietary license, while DeepSeek-V2.5 uses deepseek.

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

GPT-4o mini

Proprietary

Closed source

DeepSeek-V2.5

deepseek

Open weights

Release Timeline

When each model was launched

GPT-4o mini was released on 2024-07-18, while DeepSeek-V2.5 was released on 2024-05-08.

GPT-4o mini is 2 months newer than DeepSeek-V2.5.

GPT-4o mini

Jul 18, 2024

1.7 years ago

2mo newer
DeepSeek-V2.5

May 8, 2024

1.9 years ago

Knowledge Cutoff

When training data ends

GPT-4o mini has a documented knowledge cutoff of 2023-10-01, while DeepSeek-V2.5's cutoff date is not specified.

We can confirm GPT-4o mini's training data extends to 2023-10-01, but cannot make a direct comparison without DeepSeek-V2.5's cutoff date.

GPT-4o mini

Oct 2023

DeepSeek-V2.5

—

Provider Availability

GPT-4o mini is available from Azure. DeepSeek-V2.5 is available from DeepSeek, DeepInfra, Hyperbolic.

GPT-4o mini

azure logo
Azure
Input Price:Input: $0.15/1MOutput Price:Output: $0.60/1M

DeepSeek-V2.5

deepseek logo
DeepSeek
Input Price:Input: $0.14/1MOutput Price:Output: $0.28/1M
deepinfra logo
Deepinfra
Input Price:Input: $0.70/1MOutput Price:Output: $1.40/1M
hyperbolic logo
Hyperbolic
Input Price:Input: $2.00/1MOutput Price:Output: $2.00/1M
* Prices shown are per million tokens

Outputs Comparison

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Key Takeaways

OpenAI
Larger context window (128,000 tokens)
Supports multimodal inputs
Higher MMLU score (82.0% vs 80.4%)
DeepSeek
Less expensive input tokens
Less expensive output tokens
Has open weights
Higher HumanEval score (89.0% vs 87.2%)
Higher MATH score (74.7% vs 70.2%)
Higher SWE-Bench Verified score (16.8% vs 8.7%)

Detailed Comparison

AI Model Comparison Table
Feature
OpenAI
GPT-4o mini
DeepSeek
DeepSeek-V2.5

FAQ

Common questions about GPT-4o mini vs DeepSeek-V2.5

DeepSeek-V2.5 shows notably better performance in the majority of benchmarks. GPT-4o mini is made by OpenAI and DeepSeek-V2.5 is made by DeepSeek. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.
GPT-4o mini scores HumanEval: 87.2%, MGSM: 87.0%, MMLU: 82.0%, DROP: 79.7%, MATH: 70.2%. DeepSeek-V2.5 scores GSM8k: 95.1%, MT-Bench: 90.2%, HumanEval: 89.0%, BBH: 84.3%, AlignBench: 80.4%.
DeepSeek-V2.5 is 1.1x cheaper for input tokens. GPT-4o mini costs $0.15/M input and $0.60/M output via azure. DeepSeek-V2.5 costs $0.14/M input and $0.28/M output via deepseek.
GPT-4o mini supports 128K tokens and DeepSeek-V2.5 supports 8K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.
Key differences include context window (128K vs 8K), input pricing ($0.15 vs $0.14/M), multimodal support (yes vs no), licensing (Proprietary vs deepseek). See the full comparison above for benchmark-by-benchmark results.
GPT-4o mini is developed by OpenAI and DeepSeek-V2.5 is developed by DeepSeek.