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DeepSeek-V2 Chat vs GPT-4o

Rows highlighted in warm gray are where the models differ. Numbers carry their as-of date and primary source.

Specs

Field A: DeepSeek-V2 Chat B: GPT-4o
Released 2024-05-072024-05-13
Developer DeepSeekOpenAI
Openness OpenProprietary
License DeepSeek LicenseProprietary
OSI-approved nono
Data released nono
Training code nono
Architecture moeunknown
Total params 236B
Active params 21B
Experts
Context window 128K
Attention mlaunknown
Position enc. rope-yarnunknown
Pretraining tokens 8.1T
Post-training sft, rlhfrlhf
Training hardware
$/M input $2.50
$/M output $10.00
Output tok/sec 131.6

Benchmarks

Missing scores render as not reported; never inferred. Bold highlights the leader per benchmark.

General reasoning

MMLU-Pro 74.8 2026-05-21
GPQA-Diamond 54.3 2026-05-21

Code

LiveCodeBench 30.9 2026-05-21

Math

MATH 75.9 2026-05-21
AIME 2024 15.0 2026-05-21
AIME 2025 6.0 2026-05-21

Context · A

The Multi-head Latent Attention (MLA) debut paper. Cut KV-cache memory by ~93% versus dense attention, making 128K-context MoE inference economically viable.

Context · B

Native-multimodal model with audio + vision + text in a single pretrained backbone. Pushed real-time voice latency to under 400ms; the multimodal benchmark anchor through 2024.

DeepSeek-V2 Chat detail → · GPT-4o detail →