DeepSeek-V4-Flash vs gpt-oss-120b
DeepSeek vs OpenAI — benchmarks, pricing, and capabilities side by side.
- •DeepSeek-V4-Flash has the higher intelligence index (89.4 vs 79.6)
- •gpt-oss-120b is cheaper ($0.04 vs $0.10 per 1M input)
- •gpt-oss-120b is faster
- •DeepSeek-V4-Flash has a larger context window (1M)
| DeepSeek-V4-Flash | gpt-oss-120b | |
|---|---|---|
| Intelligence index | 89.4 | 79.6 |
| Developer | DeepSeek | OpenAI |
| Type | LLM | LLM |
| Access | Open weights | Open weights |
| Context window | 1,048,576 tokens | 131,072 tokens |
| Input price | $0.10 / 1M | $0.04 / 1M |
| Output price | $0.20 / 1M | $0.18 / 1M |
| Speed | 109 tok/s | 500 tok/s |
| Released | April 24, 2026 | August 5, 2025 |
| Parameters | 284B (13B active) | 117B (5.1B active) |
| Input modalities | Text | Text |
| Output modalities | Text | Text |
Shared benchmarks
DeepSeek-V4-Flash
gpt-oss-120b
GPQA Diamond
89.4
80.9
Humanity’s Last Exam
32.1
19