DeepSeek-V3.2 (Thinking) vs GPT-4.5 Comparison
Comparing DeepSeek-V3.2 (Thinking) and GPT-4.5 across benchmarks, pricing, and capabilities.
Performance Benchmarks
Comparative analysis across standard metrics
DeepSeek-V3.2 (Thinking) outperforms in 2 benchmarks (GPQA, SWE-Bench Verified), while GPT-4.5 is better at 0 benchmarks.
DeepSeek-V3.2 (Thinking) significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, DeepSeek-V3.2 (Thinking) ($0.28/1M tokens) is 267.9x cheaper than GPT-4.5 ($75.00/1M tokens).
For output processing, DeepSeek-V3.2 (Thinking) ($0.42/1M tokens) is 357.1x cheaper than GPT-4.5 ($150.00/1M tokens).
In conclusion, GPT-4.5 is more expensive than DeepSeek-V3.2 (Thinking).*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
DeepSeek-V3.2 (Thinking) accepts 131,072 input tokens compared to GPT-4.5's 128,000 tokens. DeepSeek-V3.2 (Thinking) can generate longer responses up to 65,536 tokens, while GPT-4.5 is limited to 4,096 tokens.
Input Capabilities
Supported data types and modalities
GPT-4.5 supports multimodal inputs, whereas DeepSeek-V3.2 (Thinking) does not.
GPT-4.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.
DeepSeek-V3.2 (Thinking)
GPT-4.5
License
Usage and distribution terms
DeepSeek-V3.2 (Thinking) is licensed under MIT, while GPT-4.5 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-V3.2 (Thinking) was released on 2025-12-01, while GPT-4.5 was released on 2025-02-27.
DeepSeek-V3.2 (Thinking) is 9 months newer than GPT-4.5.
Dec 1, 2025
3 months ago
9mo newerFeb 27, 2025
1.0 years ago
Knowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
DeepSeek-V3.2 (Thinking) is available from DeepSeek. GPT-4.5 is available from OpenAI. The availability of providers can affect quality of the model and reliability.
DeepSeek-V3.2 (Thinking)
GPT-4.5
Outputs Comparison
Key Takeaways
GPT-4.5
View detailsOpenAI
Detailed Comparison
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