DeepSeek-V3.2 (Thinking) vs GPT-5.1 Medium: Specs & Benchmark Comparison
| Characteristic | DeepSeek-V3.2 (Thinking) | GPT-5.1 Medium |
|---|---|---|
| Company | DeepSeek | OpenAI |
| Release Date | November 30, 2025 | November 11, 2025 |
| Parameters | 685B | — |
| Multimodal | No | Yes |
| Context (input) | 131K | 256K |
| Context (output) | 66K | 64K |
| Input Price / 1M | $0.28 | $1.00 |
| Output Price / 1M | $0.42 | $4.00 |
| Average Score | 0.9 | 1.0 |
| Benchmarks | ||
| AIME 2025 | 0.9 | 1.0 |
Visual Benchmark Comparison
DeepSeek-V3.2 (Thinking)
GPT-5.1 Medium
AIME 20250.9 vs 1.0
0.9
1.0
Verdict
DeepSeek-V3.2 (Thinking) leads in 2 out of 4 comparison categories.
Overall Performance
Both models show comparable average scores: DeepSeek-V3.2 (Thinking) — 0.9, GPT-5.1 Medium — 1.0.
API Cost
DeepSeek-V3.2 (Thinking) is 7.1x cheaper: input $0.28/1M vs $1.00/1M tokens.
Context Window
GPT-5.1 Medium supports a larger context: 256K vs 131K tokens.
Recency
DeepSeek-V3.2 (Thinking) is newer: released 11/30/2025 vs 11/11/2025.
More About These Models
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The DeepSeek-V3.2 (Thinking) and GPT-5.1 Medium comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the DeepSeek-V3.2 (Thinking) or GPT-5.1 Medium page. See also the complete list of AI model comparisons.