DeepSeek-V3.2-Exp vs GPT-5.1 Codex Mini Comparison

Comparing DeepSeek-V3.2-Exp and GPT-5.1 Codex Mini across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

DeepSeek-V3.2-Exp outperforms in 1 benchmarks (AIME 2025), while GPT-5.1 Codex Mini is better at 0 benchmarks.

DeepSeek-V3.2-Exp significantly outperforms across most benchmarks.

Sat Mar 14 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

DeepSeek-V3.2-Exp costs less

For input processing, DeepSeek-V3.2-Exp ($0.27/1M tokens) is 1.1x more expensive than GPT-5.1 Codex Mini ($0.25/1M tokens).

For output processing, DeepSeek-V3.2-Exp ($0.41/1M tokens) is 4.9x cheaper than GPT-5.1 Codex Mini ($2.00/1M tokens).

In conclusion, GPT-5.1 Codex Mini is more expensive than DeepSeek-V3.2-Exp.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers

Sat Mar 14 2026 • llm-stats.com

DeepSeek-V3.2-Exp

Input tokens$0.27

Output tokens$0.41

Best providerNovita

GPT-5.1 Codex Mini

Input tokens$0.25

Output tokens$2.00

Best providerOpenAI

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Context Window

Maximum input and output token capacity

GPT-5.1 Codex Mini accepts 400,000 input tokens compared to DeepSeek-V3.2-Exp's 163,840 tokens. GPT-5.1 Codex Mini can generate longer responses up to 128,000 tokens, while DeepSeek-V3.2-Exp is limited to 65,536 tokens.

DeepSeek-V3.2-Exp

Input163,840 tokens

Output65,536 tokens

GPT-5.1 Codex Mini

Input400,000 tokens

Output128,000 tokens

Sat Mar 14 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

GPT-5.1 Codex Mini supports multimodal inputs, whereas DeepSeek-V3.2-Exp does not.

GPT-5.1 Codex Mini can handle both text and other forms of data like images, making it suitable for multimodal applications.

DeepSeek-V3.2-Exp

Text

Images

Audio

Video

GPT-5.1 Codex Mini

Text

Images

Audio

Video

License

Usage and distribution terms

DeepSeek-V3.2-Exp is licensed under MIT, while GPT-5.1 Codex Mini uses a proprietary license.

License differences may affect how you can use these models in commercial or open-source projects.

DeepSeek-V3.2-Exp

MIT

Open weights

GPT-5.1 Codex Mini

Proprietary

Closed source

Release Timeline

When each model was launched

DeepSeek-V3.2-Exp was released on 2025-09-29, while GPT-5.1 Codex Mini was released on 2025-11-12.

GPT-5.1 Codex Mini is 1 month newer than DeepSeek-V3.2-Exp.

DeepSeek-V3.2-Exp

Sep 29, 2025

5 months ago

GPT-5.1 Codex Mini

Nov 12, 2025

4 months ago

1mo newer

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Provider Availability

DeepSeek-V3.2-Exp is available from Novita. GPT-5.1 Codex Mini is available from OpenAI. The availability of providers can affect quality of the model and reliability.