DeepSeek VL2 vs GPT-5.1 Codex Comparison

Comparing DeepSeek VL2 and GPT-5.1 Codex across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

DeepSeek VL2 and GPT-5.1 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

Cost data unavailable.

Lowest available price from all providers

Tue Mar 17 2026 • llm-stats.com

DeepSeek VL2

Input tokens$0.00

Output tokens$0.00

Best providerUnknown Organization

GPT-5.1 Codex

Input tokens$1.25

Output tokens$10.00

Best providerOpenAI

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Context Window

Maximum input and output token capacity

GPT-5.1 Codex accepts 400,000 input tokens compared to DeepSeek VL2's 129,280 tokens. DeepSeek VL2 can generate longer responses up to 129,280 tokens, while GPT-5.1 Codex is limited to 128,000 tokens.

DeepSeek VL2

Input129,280 tokens

Output129,280 tokens

GPT-5.1 Codex

Input400,000 tokens

Output128,000 tokens

Tue Mar 17 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both DeepSeek VL2 and GPT-5.1 Codex support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

DeepSeek VL2

Text

Images

Audio

Video

GPT-5.1 Codex

Text

Images

Audio

Video

License

Usage and distribution terms

DeepSeek VL2 is licensed under deepseek, while GPT-5.1 Codex uses a proprietary license.

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

DeepSeek VL2

deepseek

Open weights

GPT-5.1 Codex

Proprietary

Closed source

Release Timeline

When each model was launched

DeepSeek VL2 was released on 2024-12-13, while GPT-5.1 Codex was released on 2025-11-19.

GPT-5.1 Codex is 11 months newer than DeepSeek VL2.

DeepSeek VL2

Dec 13, 2024

1.3 years ago

GPT-5.1 Codex

Nov 19, 2025

3 months ago

11mo newer

Knowledge Cutoff

When training data ends

GPT-5.1 Codex has a documented knowledge cutoff of 2024-09-30, while DeepSeek VL2's cutoff date is not specified.

We can confirm GPT-5.1 Codex's training data extends to 2024-09-30, but cannot make a direct comparison without DeepSeek VL2's cutoff date.

DeepSeek VL2

—

GPT-5.1 Codex

Sep 2024

Provider Availability

DeepSeek VL2 is available from Replicate. GPT-5.1 Codex is available from OpenAI. The availability of providers can affect quality of the model and reliability.