In short
How they differ.
Worked out from the figures below. Prices and specs are the makers' own, read Oct 20, 2026.
- DeepSeek-V4-Pro-0813 reads more at once: a context window of 1M tokens against 128K.
- Both can be downloaded and run on your own machine.
- On the 1 independent board that rank both, DeepSeek-V4-Pro-0813 places higher on 1 and gpt-oss-120b on 0.
Side by side
The specs.
| DeepSeek-V4-Pro-0813 | gpt-oss-120b | |
|---|---|---|
| Made by | DeepSeek · China | OpenAI · US |
| Released | Aug 13, 2026 | Aug 5, 2025 |
| Price per 1M tokens | $1.32 in / $3.96 out (peak-hours price) | Free to download; hosts set prices |
| Context window | 1M | 128K |
| Takes in | text | text |
| Download and run it yourself | Yes (MIT) | Yes (Apache 2.0) |
| Size | 1.6T parameters, 49B active | 117B parameters, 5.1B active |
| Maker says | — | “production, general purpose, high reasoning use cases” |
| Sources | Prices, Oct 20, 2026 | Prices, Oct 20, 2026 · Description |
Independent tests
Where they place.
Position on each board we follow (1 is best). Epoch AI's and Vectara's scores are shown; the other boards are linked for their own figures.
More comparisons