DeepSeek-R1-0528 vs GPT-5.1 Codex High Comparison
Comparing DeepSeek-R1-0528 and GPT-5.1 Codex High across benchmarks, pricing, and capabilities.
Performance Benchmarks
Comparative analysis across standard metrics
DeepSeek-R1-0528 outperforms in 0 benchmarks, while GPT-5.1 Codex High is better at 1 benchmark (AIME 2025).
GPT-5.1 Codex High significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, DeepSeek-R1-0528 ($0.50/1M tokens) is 2.5x cheaper than GPT-5.1 Codex High ($1.25/1M tokens).
For output processing, DeepSeek-R1-0528 ($2.15/1M tokens) is 4.7x cheaper than GPT-5.1 Codex High ($10.00/1M tokens).
In conclusion, GPT-5.1 Codex High is more expensive than DeepSeek-R1-0528.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
GPT-5.1 Codex High accepts 400,000 input tokens compared to DeepSeek-R1-0528's 131,072 tokens. DeepSeek-R1-0528 can generate longer responses up to 131,072 tokens, while GPT-5.1 Codex High is limited to 128,000 tokens.
Input Capabilities
Supported data types and modalities
GPT-5.1 Codex High supports multimodal inputs, whereas DeepSeek-R1-0528 does not.
GPT-5.1 Codex High can handle both text and other forms of data like images, making it suitable for multimodal applications.
DeepSeek-R1-0528
GPT-5.1 Codex High
License
Usage and distribution terms
DeepSeek-R1-0528 is licensed under MIT, while GPT-5.1 Codex High uses a proprietary license.
License differences may affect how you can use these models in commercial or open-source projects.
MIT
Open weights
Proprietary
Closed source
Release Timeline
When each model was launched
DeepSeek-R1-0528 was released on 2025-05-28, while GPT-5.1 Codex High was released on 2025-11-12.
GPT-5.1 Codex High is 6 months newer than DeepSeek-R1-0528.
May 28, 2025
9 months ago
Nov 12, 2025
4 months ago
5mo 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-R1-0528 is available from DeepInfra, DeepSeek, Novita. GPT-5.1 Codex High is available from OpenAI. The availability of providers can affect quality of the model and reliability.
DeepSeek-R1-0528
GPT-5.1 Codex High
Outputs Comparison
Key Takeaways
DeepSeek-R1-0528
View detailsDeepSeek
Detailed Comparison
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