When was DeepSeek-LLM released?

DeepSeek-LLM was released by DeepSeek on Nov 29 2023.

When was GPT-5.2 released?

GPT-5.2 was released by OpenAI on Dec 11 2025.

Is DeepSeek-LLM or GPT-5.2 open source?

DeepSeek-LLM is an open-source / open-weight model released by DeepSeek. GPT-5.2 is a proprietary model released by OpenAI.

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Home/Compare/DeepSeek-LLM vs GPT-5.2

DeepSeek-LLM vs GPT-5.2

0 vs 2 benchmarks won

	DeepSeek DeepSeek-LLM	OpenAI GPT-5.2
Overview
Company	DeepSeek	OpenAI
Release date	Nov 29 2023	Dec 11 2025
Model type	—	—
Open source	Yes	No
Specifications
Parameters	—	—
Context window	—	—
Benchmarks
Science reasoning GPQA Diamond	—	92.4%
Software engineering SWE-Bench Verified	—	80%
Multimodal understanding MMMU	—	—
Timeline
Release gap	DeepSeek-LLM shipped 743 days before GPT-5.2

Which is better: DeepSeek-LLM or GPT-5.2?

GPT-5.2 leads DeepSeek-LLM on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). DeepSeek-LLM shipped 743 days before GPT-5.2, so benchmark comparisons should account for the intervening progress.

DeepSeek-LLM is an open-source / open-weight model; GPT-5.2 is proprietary.

Direct benchmark comparisons are unavailable — at least one of these models has not published scores on GPQA Diamond, SWE-Bench Verified, or MMMU.

Frequently asked questions

When was DeepSeek-LLM released?: DeepSeek-LLM was released by DeepSeek on Nov 29 2023.
When was GPT-5.2 released?: GPT-5.2 was released by OpenAI on Dec 11 2025.
Is DeepSeek-LLM or GPT-5.2 open source?: DeepSeek-LLM is an open-source / open-weight model released by DeepSeek. GPT-5.2 is a proprietary model released by OpenAI.