DeepSeek-V3 0324 vs GPT-5.3 Codex Comparison
Comparing DeepSeek-V3 0324 and GPT-5.3 Codex across benchmarks, pricing, and capabilities.
Performance Benchmarks
Comparative analysis across standard metrics
DeepSeek-V3 0324 and GPT-5.3 Codex don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, DeepSeek-V3 0324 ($0.28/1M tokens) is 6.2x cheaper than GPT-5.3 Codex ($1.75/1M tokens).
For output processing, DeepSeek-V3 0324 ($1.14/1M tokens) is 12.3x cheaper than GPT-5.3 Codex ($14.00/1M tokens).
In conclusion, GPT-5.3 Codex is more expensive than DeepSeek-V3 0324.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
GPT-5.3 Codex accepts 400,000 input tokens compared to DeepSeek-V3 0324's 163,840 tokens. DeepSeek-V3 0324 can generate longer responses up to 163,840 tokens, while GPT-5.3 Codex is limited to 128,000 tokens.
Input Capabilities
Supported data types and modalities
GPT-5.3 Codex supports multimodal inputs, whereas DeepSeek-V3 0324 does not.
GPT-5.3 Codex can handle both text and other forms of data like images, making it suitable for multimodal applications.
DeepSeek-V3 0324
GPT-5.3 Codex
License
Usage and distribution terms
DeepSeek-V3 0324 is licensed under MIT + Model License (Commercial use allowed), while GPT-5.3 Codex 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 0324 was released on 2025-03-25, while GPT-5.3 Codex was released on 2026-02-05.
GPT-5.3 Codex is 11 months newer than DeepSeek-V3 0324.
Mar 25, 2025
11 months ago
Feb 5, 2026
1 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 0324 is available from Novita. GPT-5.3 Codex is available from OpenAI. The availability of providers can affect quality of the model and reliability.
DeepSeek-V3 0324
GPT-5.3 Codex
Outputs Comparison
Key Takeaways
DeepSeek-V3 0324
View detailsDeepSeek
Detailed Comparison
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