DeepSeek-V3 vs GPT-5.1 High Comparison
Comparing DeepSeek-V3 and GPT-5.1 High across benchmarks, pricing, and capabilities.
Performance Benchmarks
Comparative analysis across standard metrics
DeepSeek-V3 outperforms in 0 benchmarks, while GPT-5.1 High is better at 1 benchmark (GPQA).
GPT-5.1 High significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, DeepSeek-V3 ($0.27/1M tokens) is 4.6x cheaper than GPT-5.1 High ($1.25/1M tokens).
For output processing, DeepSeek-V3 ($1.10/1M tokens) is 9.1x cheaper than GPT-5.1 High ($10.00/1M tokens).
In conclusion, GPT-5.1 High is more expensive than DeepSeek-V3.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
GPT-5.1 High accepts 400,000 input tokens compared to DeepSeek-V3's 131,072 tokens. DeepSeek-V3 can generate longer responses up to 131,072 tokens, while GPT-5.1 High is limited to 128,000 tokens.
Input Capabilities
Supported data types and modalities
GPT-5.1 High supports multimodal inputs, whereas DeepSeek-V3 does not.
GPT-5.1 High can handle both text and other forms of data like images, making it suitable for multimodal applications.
DeepSeek-V3
GPT-5.1 High
License
Usage and distribution terms
DeepSeek-V3 is licensed under MIT + Model License (Commercial use allowed), while GPT-5.1 High uses a proprietary license.
License differences may affect how you can use these models in commercial or open-source projects.
MIT + Model License (Commercial use allowed)
Open weights
Proprietary
Closed source
Release Timeline
When each model was launched
DeepSeek-V3 was released on 2024-12-25, while GPT-5.1 High was released on 2025-11-12.
GPT-5.1 High is 11 months newer than DeepSeek-V3.
Dec 25, 2024
1.2 years ago
Nov 12, 2025
4 months ago
10mo newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
DeepSeek-V3 is available from DeepSeek. GPT-5.1 High is available from OpenAI. The availability of providers can affect quality of the model and reliability.
DeepSeek-V3
GPT-5.1 High
Outputs Comparison
Key Takeaways
DeepSeek-V3
View detailsDeepSeek
GPT-5.1 High
View detailsOpenAI
Detailed Comparison
| Feature | | |
|---|